Circuit Breakers Naval Shipboard Use

Transcription

1 Circuit Breakers Naval Shipboard Use

2 Circuit Breakers for Naval Shipboard Use Contents Description Page Description Page Description Page Description Page Selector Guide for Navy Circuit Breakers General Information Design Features Standard Features Application General Ordering Information Marine Breaker Application Types ALB-, NLB Product Selection Outline Dimensions Time-Current Curve Types AQB-A0, NQB-A Product Selection Outline Dimensions Time-Current Curve Types AQB-A, NQB-A Product Selection Outline Dimensions Time-Current Curve Types AQB-A00, NQB-A Product Selection Outline Dimensions Time-Current Curve Types AQB-A0, NQB-A Product Selection Outline Dimensions Time-Current Curve Types AQB-A0 RMS, NQB-A Product Selection Time-Current Curve Types AQB-A0, NQB-A Product Selection Outline Dimensions Time-Current Curve Types AQB-LF00, AQB-LF Product Selection Outline Dimensions Time-Current Curve Types AQB-A, AQB-L, NQB-A Product Selection Outline Dimensions Time-Current Curve Types AQB-L400, AQB-LL400, NQB-LL Product Selection Outline Dimensions Time-Current Curve Type NQB-A Product Selection Outline Dimensions Types AQB-A60, NQB-A Product Selection Outline Dimensions Time-Current Curve Types AQB-A60, NQB-A Product Selection Outline Dimensions..... Time-Current Curve..... Types ACB 600/000HR 00/4000HR Outline Dimensions..... Time-Current Curve Circuit Breakers for Naval Shipboard Use PG0800E January 00

3 Selection Guide Circuit Breakers for Naval Shipboard Use to 4000 Amperes, 00 to 0,000 Amperes I.C. SELECTOR GUIDE FOR NAVY CIRCUIT BREAKERS BREAKER HI-SHOCK NO. OF TYPE SPECIFICATION SPEC POLES AMPERE RATING VOLTAGE RATING ALB- MIL-C-788 MIL-S-90 0 Vdc Vac NLB- MIL-C-788 MIL-S-90 0 Vdc Vac INTERRUPTING RATING, AMPERES TRIPPING ELEMENTS,00 6,000 Thermal Magnetic None 6 AQB-A0 MIL-C-76 MIL-S Vac,000 Thermal 7 Magnetic NQB-A0 MIL-C-76 MIL-S Vac None 7 AQB-A MIL-C-76 MIL-S Vac,000 Thermal Magnetic NQB-A MIL-C-76 MIL-S Vac None AQB-A00 MIL-C-76 MIL-S-90, 00 0 Vdc 00 Vac NQB-A00 MIL-C-76 MIL-S-90, 00 0 Vdc 00 Vac AQB-A0 MIL-C-76 MIL-S Vdc 00 Vac NQB-A0 MIL-C-76 MIL-S Vdc 00 Vac 0,000 9,000 Thermal Magnetic None 9 0,000 4,000 Thermal Magnetic None 4 AQB-A0 MIL-C-76 MIL-S Vac,000 Electronic 44 NQB-A0 MIL-C-76 MIL-S Vac None 44 AQB-A0 MIL-C-76 MIL-S-90, Vdc 00 Vac,000 0,000 Thermal Magnetic NQB-A0 MIL-C-76 MIL-S-90, 0 0 Vdc None Vac AQB-LF00 MIL-C-76 MIL-S Vac 00,000 Thermal 60 Magnetic Fuses AQB-LF0 MIL-C-76 MIL-S Vac 00,000 Thermal 60 Magnetic Fuses AQB-A MIL-C-76 MIL-S Vac 0 ka Electronic 70 AQB-L MIL-C-76 MIL-S Vac 00 ka Electronic 70 NQB-A MIL-C-76 MIL-S Vac None 70 AQB-L400 MIL-C-76 MIL-S Vac 0,000 Electronic 78 AQB-LL400 MIL-C-76 MIL-S Vac 00,000 Electronic 78 NQB-LL400 MIL-C-76 MIL-S Vac None 79 NQB-A80 MIL-C-76 MIL-S at 60 Hz 00 Vac None 98 NQB-A80 MIL-C-76 MIL-S at 400 Hz 00 Vac None 98 AQB-A60 MIL-C-76 MIL-S Vac 7,000 Thermal 00 Magnetic NQB-A60 MIL-C-76 MIL-S Vac None 00 AQB-A60 MIL-C-76 MIL-S Vac 00,000 Electronic 09 NQB-A60 MIL-C-76 MIL-S Vac 00,000 None 09 ACB 600HR MIL-C-787 MIL-S Vac 8,000 Electronic ACB 4000HR ACB ratings are symmetrical; all others are asymmetrical. See MIL-spec or call Eaton for 400 Hz ratings. A ampere breaker has an interrupting rating of 00 amperes ac or dc. PAGE 48 Circuit Breakers for Naval Shipboard Use PG0800E January 00

4 General Information Front view of assembled AQB-A0 Navy circuit breaker. Note that the shock resistant material (MIL-M-4) used for housing and cover is light gray. Slip Type Connectors Operating Handle Shown In Off Position Ampere Marker Terminal Studs Mounting Block Mounting Studs Plug-in Studs Terminal Mounting Block Rear view of breaker showing terminal blocks for switchboard mounting. (Terminal block attached at line end of breaker and removed from load end.) Description These molded case Navy circuit breakers provide both overload protection for conductors and short circuit protection for all circuit elements such as conductors, motors and starters. They also serve as manual disconnecting means as well as circuit protectors. All Eaton s Cutler-Hammer circuit breakers in this Product Guide meet applicable Navy specifications for hi-shock. These manually operated breakers are rated from to 4,000 amperes with interrupting ratings from,00 to 0,000 amperes. (See Selector Guide on Page for ratings and Navy specifications.) Design Features Cutler-Hammer Navy circuit breakers retain all the features of standard commercial type AB DE-ION breakers listed on Page 4 under standard features. Built to Navy specifications, they incorporate the following Navy requirements: Specific Navy Features Qualified Products All Navy circuit breakers undergo rigorous qualification testing to MIL-C-76 and are listed on the associated Qualified Products List issued by the federal government. (ACB s per MIL-C-787, ALB- s per MIL-C-788, and AQB s per MIL-C-76.) Shock-Resistant Molded Case Housing consists of rear base section and cover molded of glass alkyd material. This material, reinforced glass filled thermosetting plastic, has very high mechanical strength (shock and impact resistance), is both fire and moisture-resistant and provides excellent dielectric characteristics. Anti-Shock Device Inertia weight over center pole holds trip bar in latched position under shock conditions but does not prevent thermal or magnetic trip units from functioning on overload and short circuits. Shock and Vibration Resistant Navy circuit breakers are all tested to MIL-S-90 for Hi Impact Shock, and MIL-STD-67 for Mechanical Vibration. This test ensures that the circuit breakers will operate properly in the Naval shipboard environment. EMI Resistant All Navy circuit breakers with Electronic Trip Units (ETUs) are tested for electromagnetic immunity and emissions per MIL-STD-46 and -46 to eliminate interference from radiated or conducted EMI. 0 C Calibrated Thermalmagnetic circuit breakers are calibrated for 0 C ambient temperature. The calibration of circuit breakers with ETUs are inherently unaffected by ambient temperature. Interchangeable Trip Units All thermal and magnetic trip units in AQB circuit breakers are encased in sealed, self-contained units that are interchangeable with other trip units of different ampere ratings within the same frame size. Note: Interchangeable trip units are not available in the A0, ALB-, A0 or A. Plug-in Connectors All Navy circuit breakers are designed for optional molded plug-in bases in a variety of styles. Smaller breakers (ALB-, A0 and A) must be used with the associated bases. Other MCCBs can be converted for direct cable or plug-in mount. Plug in bases are available in a variety of styles depending upon the circuit breaker type. See the specific circuit breaker style for available mounting bases and outline drawings. Note: All A0, A0 or A breakers have plug-in connectors. Front or rear connectors determined by mounting base selected. ALB breakers have a clamp terminal on the line end to receive panelboard bus stab projections. Interrupting Ratings to 0 ka Navy circuit breakers are available with interrupting ratings up to 0 ka, many using modern fuseless current-limiting technology. Circuit breakers rated 00 ampere and below must be used with associated current limiting fuses to achieve high interrupting capacity. Circuit Breakers for Naval Shipboard Use PG0800E January 00

5 General Information Arc Chute Moving Arm Operating Mechanism Trip Mechanism Breaker Front Cover Removed Arc Chute Removed Standard Features Corrosion-Resistant All parts are specially treated to resist corrosion. Fungusmoisture resistant treatments for severe atmospheres are available as modifications. Positive Position Indication Position of handle always indicates ON, OFF, or TRIPPED. Free-Bearing Surfaces Dissimilar metals are used to prevent bearing wear and eliminate sticking. DE-ION Arc Quenchers This Eaton development consists of a series of grid plates mounted in parallel between supports of insulating material. The slots in the steel plates are directly over the contacts and draw the arc from the moving contact up into the divided chamber where it is confined, divided, and extinguished. Silver Alloy Contacts Special silver alloy contacts prevent sticking and welding, increase contact life and insure low resistance when carrying full-rated load. Quick-Make, Quick-Break Over Center Toggle Mechanism Provides quick, positive action in opening and closing of circuits, prevents teasing of contacts and reduces contact wear. Complete Interpole Barriers Ensure against internal flashovers when faults occur. Common Trip Two and three-pole units have insulated common trip bar that opens all poles simultaneously when an overload occurs on any one, thus eliminating possibility of single-phasing. Tested Accuracy All tripping members have ground and polished latch surfaces heat treated to prevent galling or later distortion. All parts are tested in temperaturecontrolled atmosphere to ensure correct calibration and perfect mating. Each breaker is thoroughly tested. Factory Sealed Smaller breakers are factory sealed to prevent tampering with calibration. Interchangeable trip units are individually sealed. Molded Operating Handle Removed 4 Circuit Breakers for Naval Shipboard Use PG0800E January 00

6 Timeless Images Application Designed primarily for circuit protection, Cutler-Hammer Navy circuit breakers are used in lighting and power panels, switchboards, distribution centers and load centers aboard ship. The photograph above illustrates the use of molded case circuit breakers and air circuit breakers in a typical Navy switchboard. General Ordering Information When ordering Cutler-Hammer Navy circuit breakers, consult the check list below to make sure you have provided correct information. You should specify:. Quantity, Cutler-Hammer Part Number and National Stock Number of: a. Complete breaker or frame, trip unit, fuses (where required) and/or attachments where available. b. Plug-in mounting block or front connecting cable terminals. c. Spare breakers or trip units. (Usually one required for each 0 units or fraction thereof of each current rating.) d. Technical Manuals.. Shipment Specify transportation means, method of packaging and preservation, and required shipping date.. Drawings Specify quantity of outline or master plan drawings required. 4. Inspection Indicate whether Government Source Inspection (GSI) is required at factory prior to shipment. This should appear as a shipping note. Marine Breaker Applications Eaton also manufactures a complete family of marine circuit breakers for Navy non-combatant ships, U.S. Coast Guard vessels, Military Sealift Command vessels, commercial vessels, offshore drilling rigs, etc. These marine breakers are different from high shock MIL-spec breakers. They meet any or all of various marine specifications such as ABS, USCG-CFR46, IEEE4, UL 489 Supplements SA and SB, UL 066 Supplement SA, Lloyd s of London, DNV. Call Eaton for more details. Circuit Breakers for Naval Shipboard Use PG0800E January 00

7 Types ALB- and NLB- Circuit Breakers for Naval Shipboard Use Types ALB- and NLB- Breakers Volts ac and dc, 0 Amperes Maximum, 000 Amperes I.C. Interrupting Rating 0 0 ampere units:,000 amperes ac and,00 amperes dc. ampere unit:,00 amperes ac or dc. High shock Navy ALB- circuit breakers are designed for shipboard protection of single-phase ac and dc circuits or three-phase ac circuits when breakers are connected by handle yokes for - and -pole operation. The NLB- breaker is the nonautomatic design of the ALB-. Since the tripping element is omitted, it is used as a manual disconnect. Non-adjustable thermal and magnetic trip elements are factory calibrated and sealed. The tripping element is counterbalanced to reduce possibility of accidental tripping under shock. All parts are given a corrosion-resistant treatment in compliance with MIL-E-97. Plug-in line connections simplify panelboard mounting. A clamp type terminal on the line end of the breaker provides plug-in connection to bus stabs in panelboard mounting blocks. For front connection, there is a pressure type terminal on the load end of the breaker. ALB- AND NLB- CIRCUIT BREAKER PRODUCT SELECTION NET WEIGHT 8 OZ. ALB- Navy Circuit Breaker Note: Clamp type stab terminal for panelboard mounting at line end and pressure type terminal for front connection at load end. Specification: MIL-C amperes, 60 or 400 cycle. volts ac or dc single-pole. TYPE AMPERE RATING STOCK ALB- 44D07G ALB- 0 44D07G ALB- 44D07G ALB- 0 44D07G ALB- 44D07G ALB- 0 44D07G ALB- 44D07G ALB D07G ALB- 0 44D07G NLB- 0 44D07G For list prices, see Price and Availability Digest (PAD). Tripping element omitted for manual disconnect. Letter N hot stamped in white on handle. Special ALB- and NLB- Breakers Similar to above except to have a A-B auxiliary switch rated ampere resistive, 0 volts ac or 0 volts dc maximum (Not submitted for Navy approval, and does not use breaker mounting bases.) Order by description. 6 Circuit Breakers for Naval Shipboard Use PG0800E January 00

8 Mounting Bases PANELBOARD MOUNTING AND ACCESSORIES Top View of Typical ALB- Panelboard Mounting Base (Style 44D09G04) Drawings Available Master drawing 900J96; breaker outline 4C8; mounting bases 4D79 and 69D9. Technical Manual NAVSHIPS No This booklet per MIL-M-07. When required, order BVR-TM-78. Note: These breakers are non-repairable per NAVSEA letter, serial number 9077 Ser 0/0 EI-48, paragraph Policy, sub-paragraph, dated October 994. TYPE In dc or single-phase panel applications, basic pattern is one molded base accommodating four single-pole breakers. (See Pages 0.) Ordering Information: See Page. Individual Reproductions When required, reproductions of master drawings, outline drawings and certification sheets can be ordered as follows: In -phase application where basic pattern is three molded bases, one 44D09G04 and two 44D09G0 are required, each base accommodating two breakers per circuit. (See Page 0.) STOCK NET WEIGHT, LBS. (KG) Single Breaker, Front Panel Supported 44D09G (0.) Single Breaker, Surface Mounted 44D09G (0.) Two Breakers, Front Panel Supported 44D09G (0.) dc, Single-Phase and Part (/) of Combination for -Phase 44D09G (0.) Part (/) of Combination for -Phase Application 44D09G (0.) -Phase Panel Application 44D09G (0.) dc, Single-Phase and Part (/) of Combination for -Phase 44D09G (0.) For -phase application where basic pattern is one molded base accommodating up to six breakers or two breakers per circuit. (See Pages 4.) ITEM DESCRIPTION Full Size Photolithic Tracing of Master Drawing on Vellum Outline and Drilling Plan on Vellum Certification Data on Vellum 4 Reproductions of Items, or Handle Yokes Provide interlocking of two or three one-pole breakers for simultaneous operation. Individual pole tripping is obtained without normal trip indicating (center) position. OF POLES STOCK 07B08H B08H Circuit Breakers for Naval Shipboard Use PG0800E January

9 Types ALB- and NLB- Outline Dimensions ALB- Breaker and Mounting Bases Dimensions in Inches / Line Stab 7/6 / Breaker Outline -/8 /64 R 9/ 9/ / Details of Male Copper Stab (Not Furnished with Circuit Breakers) º Tripped 7/8 On 9º 9º Off /6 / /8 -/6-6/64 /6 / R / -4/64 C L t -/ /6 7/ 7/8 9/ 9/64 / /8 / 7/6 On 9/ 00 9º Reset /4 /8 / -6/64 /6 / R Cof L Handle Pivot /8 / -4/64 /6 Ampere Rating /6 / -/6 -/ / Mounting Slot /4 9/ / 9/ / 9/6 /6 Ampere Rating / /8 -/6 /4 /4 /6 / 9/ STANDARD BREAKER SPECIAL BREAKER WITH AUXILIARY SWITCH Single Base, Front Panel Supported (44D09G0) Screws, Steel,.90- X Furnished with Lockwashers for Securing to Panel Front Cover.90- Tap ( Holes) /6 -/ / / /4 /6 -/8 -/4 /8 Steel Plate /64 Thick C L C Base, Breaker and Mounting Plate Two Breaker Base, Front Panel Supported (44D09G0) Screws, Steel,.90- X Furnished with Lockwashers for Securing to Panel Front Cover.90- Tap ( Holes) /6 / / /4 -/8 /8 / -/4 / Steel Plate /64 Thick C L of Mounting Plate 8 Circuit Breakers for Naval Shipboard Use PG0800E January 00

10 Single Base Surface Mounted (44D09G0) 7/64 / -/ / / C Breaker Escutcheon -/ -/ 4/64 C L of Base and Breaker / /4 / /64 Critical Dimensions of Stab and Mounting Clip / 7/ /64 Mounting of Surface Mounted Bases Critical Dimensions of C Breaker Escutcheon Stab and Mounting Clip L 9/ -/ -/64 / 7/6 / / -7/64 /6 Mounting Bracket or Inside of Enclosure (Supplied by Customer) / / Base Mounting Screws /8 Long SIDE VIEW Mounting of Front Panel Supported Bases Breaker Escutcheon and Mounting Screws X Base C L Mounting Screws 9/64 Inside of Panel or Enclosure Front /6 Thick Steel /6-9/ -47/64 7/64 -/6 / /64 SIDE VIEW.9 -/.9 -/.4.4 -POLE HANDLE YOKE (07B08H0) -POLE HANDLE YOKE (07B08H0) Circuit Breakers for Naval Shipboard Use PG0800E January

11 Types ALB- and NLB- Outline Dimensions ALB- Breaker and Mounting Bases Dimensions in Inches, Continued Application in dc and Single-Phase Panels (Two Separate Bases shown. Basic Pattern is One Molded Base Accommodating Four Single-Pole Breakers) / Busbar C Stab Base Busbar A 7/6 7/6 C L -7/ -7/ C /4 /4 / C L C 7/6 7/6 44D09G04 7/6 6/64 6/64 44D09G04 FRONT VIEW -Phase Panel Application for Two Breakers Per Load Circuit (Basic Pattern of Three Separate Molded Bases can be Repeated for Longer Panel Boards) 6/64 /4 /4 Busbar C Busbar B and Stab Base -7/ -7/ C L C L C L C L Busbar A 44D09G0 7/6 / Stab Base Mtg. 7/6 C L C 44D09G04 C 6/64 /64 Thk. Steel 7/6 / / -/64 /4 C L C / /64 / 7/6 / 9/6 Critical Dimensions of Stabs and Mtg. Clip.90- Thread /8 SIDE VIEW Outline Dimensions for Mounting Bases 44D09G04 or 44D09G0 -/ 6/64 /8 7/64 Diameter Counter Bores /4 Deep C L C 6-/4 /64 Diameter Holes 7 /8 0 Circuit Breakers for Naval Shipboard Use PG0800E January 00

12 Bus Bar Drilling for dc and Single-Phase Panels (/4 x Copper Bus not Supplied) -7/64 Busbar C -9/ -/6 C /64 L 7/8 C L Busbar A -9/ C L C 44D09G04 Stab Base Mtg. Screws / C L C / 44D09G Tapped Holes / /4 Bus Bar Drilling for -Phase Panels For Two Breakers per Load Circuit (/4 x Copper Bus not Supplied) Busbar C Busbar B Busbar A -9/ -7/ -7/ -9/ C L C /64 L -/64 6/64 C L -7/64 -/ 4 C L C L Stab Base Mtg. Screw 4-/ 4 -/ 4.90-Tapped Holes 4-/ 4 /4 / / FRONT VIEW Circuit Breakers for Naval Shipboard Use PG0800E January 00

13 Types ALB- and NLB- Outline Dimensions ALB- Breaker and Mounting Bases Dimensions in Inches, Continued Application in dc and Single-Phase Panels (Two Separate Bases shown. Basic Pattern is One Molded Base Accommodating Four Single-Pole Breakers) C L C 7/6 7/6 6/64 C L / 7/6 7/6 7/6 Busbar C Stab Base Busbar A / C L C /4 /4 C L C 7/6 C L C 6/64 /4 /4 44D09G08 FRONT VIEW -Phase Panel Application for Two Breakers Per Load Circuit (Basic Pattern of Three Separate Molded Bases can be Repeated for Longer Panel Boards) Stab Base Screw C L C Busbar C -7/ Busbar B and Stab Base Busbar A 44D09G0 C L 7/6 / 7/6 7/6 6/64 C L C L C 7/6 /4 44D09G08 7/6 / / Critical Dims of Stabs and Mtg Clips / -/64 / / C L C / /64 6/64 44D09G0 /4 9/6 7/6 /64 Thick Steel.90- Thd. /8 SIDE VIEW Outline Dimensions for Mounting Bases 44D09G0 or 44D09G08 C L C Handle Pivot C L C /4-7/8 -/ -/6 -/ /64 9/6 SIDE VIEW Circuit Breakers for Naval Shipboard Use PG0800E January 00

14 Bus Bar Drilling for dc and Single-Phase Panels (/4 x Copper Bus not Supplied) Busbar C C L -9/ Busbar A -/6 C L C -9/ 44D09G08 Stab Base and Mtg. Screw 6/64 /64 7/8-7/64 C L C /.90- Tapped Holes C L C / 44D09G08 / /4 Bus Bar Drilling for -Phase Panels For Two Breakers per Load Circuit (/4 x Copper Bus not Supplied) 6/64-9/ -7/ / -/64-7/ -/64 -/ -9/ /64-7/8 Stab Base and Mounting Screw 44D09G0 / -7/8 -/8 44D09G08 -/ 44D09G0 Busbar C -/8-7/8 -/ Busbar A Busbar B -7/8 -/8.90- Tapped Holes -/ -/8 /4 / / Outline Dimensions for Mounting Bases 44D09G0 or 44D09G08 -/ 6/64 /8 7/64 Diameter Counter Bores /4 Deep C L C /64 Diameter Holes 6-/4 7 /8 Circuit Breakers for Naval Shipboard Use PG0800E January 00

15 Types ALB- and NLB- Outline Dimensions ALB- Breaker and Mounting Bases Dimensions in Inches, Continued Busbar C Stab Base and Busbar B -7/ -7/ Busbar A 44D09G06 -Phase Panel Application (For One or Three Breakers per Load Circuit) /6 C L C C L C C L C C L C -/64 /6 /4 /6 C L C /6 -/64 /4 44D09G06 Outline Dimensions for Mounting Base 44D09G06 -/ 7 /8 6-/4 /8 -/64 /64 Diameter Holes C L 7/64 Diameter Counter Bores /4 Deep Outline Dimensions for Mounting Bases 44D09G04, 44D09G0, 44D09G06, 44D09G08 Handle Pivot C L Handle Pivot C L -7/8 /4 -/ -/6 -/ /64 9/6 SIDE VIEW 4 Circuit Breakers for Naval Shipboard Use PG0800E January 00

16 Bus Bar Drilling for -Phase Panel Application For One or Three Breakers per Load Circuit (/4 x Copper Bus not Supplied) -/64 Busbar C Busbar B -9/ -7/ -7/ -7/64 C L C C L -47/64 4 /64 C L C Busbar A 44D09G06 Stab Base and Mounting Screws.90- Tapped Holes 44D09G06 / /4 / FRONT VIEW Front Panel Cutout Breaker Cutout Stab Base Load End -/8 Breaker C L -/6 / C L -9/ / C L C Breaker Cutout -/ -/8 -/6 / C L C /6 Diameter Megger Holes if Required For One -Pole Circuit Load End -9/ 9/64 Stab Base C L 9/ 9/64 For One -Pole Circuit 9/64 For One Single-Pole Circuit Circuit Breakers for Naval Shipboard Use PG0800E January 00

17 Types ALB- and NLB- Characteristic Time-Current Curve ALB- Breaker MIL-C-788 This specification includes the ALB- type circuit breaker. It requires that this breaker carry % of current ratings for more than one hour and that the primary elements initiate tripping at 8% rated current within one hour and at 00% in 0 to 00 seconds. A tripping characteristic of the primary element is based on the current flowing through all poles in series and in an ambient of 0 C The minimum instantaneous trip setting shall be 0 amperes or 0 times the element rating, whichever is less, and trip at not less than 0. cycles. At 800 amperes, the breaker must trip at second or less. Time Trip Cold Start, Cycles Seconds Minutes Hours Characteristic Time-Current Curve Minimum Characteristic Time-Current Curve Instantaneous Tripping Occurs 0 Amperes or 0 Times Element Rating Whichever is Less More Than 0. Cycles 800 Amperes Less Than.400 Seconds Maximum Times Rated Current Characteristic Temperature-Rating Curve Percent Normal Rating Ambient Te C Wiring Diagram Line Line Draw-Out Connection Load Load Type ALB- Type NLB- Stationary Connection 6 Circuit Breakers for Naval Shipboard Use PG0800E January 00

18 Types AQB-A0, NQB-A0 Circuit Breakers for Naval Shipboard Use Types AQB-A0, NQB-A0 Breakers 00 Vac, 0 Amperes Maximum, 000 Amperes I.C. Interrupting Rating,000 amperes ac. Non-interchangeable trip unit. Class Hi-Shock MIL-S-90, 0 C ambient. The AQB-A0 is a factory calibrated non-adjustable thermalmagnetic circuit breaker. The circuit breaker is assembled as a -pole device with circuit protecting trip elements in the two outside poles. The unit can be installed in -pole applications by connecting the -wire circuit to the outside protected poles. The NQB-A0 breaker is a nonautomatic design of the AQB-A0. Since the tripping elements are omitted, it is used as a manual disconnect. The NQB-A0 has a maximum continuous current rating of 0 amperes. Drawings Available 44C6 Master drawing for breaker and mounting bases. AQB-A0 AND NQB-A0 CIRCUIT BREAKER PRODUCT SELECTION TYPE TRIP UNIT RATING STOCK Specification: MIL-C amperes, 60 and 400 cycle. 00 volts ac. -pole. 60 Cycles AQB-A0 0 44CG AQB-A0 44CG AQB-A0 0 44CG AQB-A0 44CG AQB-A0 0 44CG AQB-A0 44CG AQB-A CG AQB-A0 0 44CG Cycles AQB-A0 0H 44CG AQB-A0 H 44CG AQB-A0 0H 44CG AQB-A0 H 44CG AQB-A0 0H 44CG AQB-A0 H 44CG AQB-A0 40H 44CG AQB-A0 0H 44CG NQB-A0 Non-Automatic 44CG For list prices, see Price and Availability Digest (PAD). Complete breaker does not include mounting bases. Type required must be ordered separately. Mounting bases include cable lugs. Only -pole breakers furnished; for -pole application make connections to outside poles. Refer to Eaton for dc Part Numbers and Information. Note: These breakers are non-repairable per NAVSEA letter, serial number 9077 Ser 0/0 EI-48, paragraph Policy, sub-paragraph, dated October 994. Circuit Breakers for Naval Shipboard Use PG0800E January

19 Types AQB-A0, NQB-A0 PANELBOARD MOUNTING AND ACCESSORIES NET WEIGHT TYPE STOCK Single Base Line and Load Stabs, Front Connected 44C44G Single Base Line and Load Stabs, Rear Connected 44C44G Single Base Line Rear, Load Front Connected 44C44G Double Base Assembly Line, Bus Connected; Load, Front Connected 44C4G Handle Lock 080A9G0 Handle Boot 7B79H Technical Manual 44C9H0 DESCRIPTION For ordering information, see Page. NET WEIGHT, LBS. (KG) AQB-A0 Breaker. (.0) NQB-A0 Breaker.9 (0.9) Single Mounting Base 0.7 (0.) Double Mounting Base. (0.7) Handle Lock.0 (0.0) AQB-A0 SINGLE MOUNTING BASE FRONT CONNECTED AQB-A0 SINGLE MOUNTING BASE REAR CONNECTED SINGLE BASE LINE STABS REAR CONNECTED LOAD STABS FRONT CONNECTED HANDLE LOCK DOUBLE MOUNTING BASE FRONT CONNECTED 8 Circuit Breakers for Naval Shipboard Use PG0800E January 00

20 Outline Dimensions AQB- A0 and NQB-A0 Breakers Dimensions in Inches /64 -/6 Breaker Mounting Holes Two #-4 Mounting Screws 4 /8 Long Supplied With Breaker Inserts in Cover () #-4 Thds. -/ -/8 7/8 9/6 C L C 7/ 4-/8 -/6 -/6 ON OFF ON OFF -/4 /8 On Trip Off Reset of Clip -/ -/8 / Dia. Hole C L C of Clip Load End 9/64 -/ -/ 4-/8 FRONT VIEW SIDE VIEW Front Panel Cutout /64 -/8 -/4 / /4 R /4 /4 -/6 -/8 -/ -/ -/6 Load Side -/8 -/8 -/8 -/8 -/8 -/8 Outline of Circuit Breaker is Indicated by Broken Line /6 Diameter for Insulation Test Wiring Diagram Line Line Load Type NQB-A0 Load Type AQB-A0 Circuit Breakers for Naval Shipboard Use PG0800E January

21 Types AQB-A0, NQB-A0 Outline Dimensions Single Base Units Dimensions in Inches Line and Load Stabs Front Connected 9/64 -/6 -/ C L C Line -7/ /8-7/6 / C L C Cir. Bkr. / -/8 /4 Mtg Holes () -7/8 0- Thds. -/6 Load /64 -/8 -/8 -/ Wire Connection Line and Load Stabs Back Connected -/6 -/ /8 -/6 Line -9/64 9/64 C L C -7/ / -/ C L C r. Bkr. / /4 Mtg -/8 0- Thds. -/64 Load -/8 -/8 -/ Wire Connection Line Stabs Back Connected, Load Sides Front Connected -/6 -/ Line -9/64 -/6 /8 9/64 C L C -7/ / C L C r. Bkr. /4 / -/8 0- Thds. Mtg Holes -/6 () -7/64 Load -/8 -/8 -/ Wire Connection 0 Circuit Breakers for Naval Shipboard Use PG0800E January 00

22 Outline Dimensions Double Base Assembly Panelboard Dimensions in Inches / C L of Circuit Breakers 9/64 Line Load -/8 -/6 C L of Base -/ -/ -/8 Load Mounting Holes (4) / /4 /4 Line / -9/ -9/6-9/ -/6 / -/6 -/8 -/6 -/8 -/6 #0- -7/ -7/ Thds. / /8 Wire Connectors / #0- Thread #0- Thread LINE BUS CONNECTED, LOAD FRONT CONNECTED Circuit Breakers for Naval Shipboard Use PG0800E January 00

23 Types AQB-A0, NQB-A0 Characteristic Time-Current Curve Navy Type AQB-A0 Circuit Breaker Time-Current Curves for AQB-A0 Circuit Breaker (60 Hz and 400 Hz 0,, 0,, 0,, 40 and 0 Ampere Ratings) Hours Hour 0,000,000,000,000, ,000,000,000 4,000,000 0,000 0,000 0,000 40,000 0,000 00,000 0,000,000,000,000,000 Hours Hour Time in Seconds Minute Maximum Trip Time Minute Minimum Trip Time ,000,000,000 4,000,000 0,000 0,000 0,000 40,000 0,000 00,000 Circuit Breakers for Naval Shipboard Use PG0800E January 00

24 Types AQB-A, NQB-A Circuit Breakers for Naval Shipboard Use Types AQB-A, NQB-A Breakers 00 Vac, 0 Amperes Maximum, 000 Amperes I.C. Interrupting Rating,000 amperes I.C. Non-Interchangeable trip unit. Class Hi-Shock MIL-S-90, 0 C ambient. The Type AQB-A molded case circuit breaker is a 00 Vac maximum rated device with 0 ampere maximum continuous current at 60 Hz. The AQB-A is a form, fit and function replacement for the AQB-A0 circuit breaker with enhanced overcurrent protection features. In the AQB-A, overcurrent protection is provided in all three poles. This not only makes the breaker suitable for use in grounded three-phase systems, but offers enhanced performance of the instantaneous trip feature when used in ungrounded systems. In three phase distribution systems with either a solidly or effectively grounded neutral, fault currents can occur that will be evident in only one pole, so protection is needed in all three poles. The enhanced instantaneous trip feature is valuable in the selective coordination of the AQB-A with upstream AQB breakers. The AQB-A circuit breaker has an interruption rating of 000 amperes asymmetric. The NQB-A breaker is a nonautomatic design of the AQB-A. Since the tripping elements are omitted, it is used as a manual disconnect. The NQB-A has a maximum continuous current rating of 0 amperes. AQB-A AND NQB-A CIRCUIT BREAKER PRODUCT SELECTION TYPE TRIP UNIT RATING STOCK Specification: MIL-C amperes, 60 cycles. 00 volts ac. -pole. 60 Cycles AQB-A 0 44C6G AQB-A 44C6G AQB-A 0 44C6G AQB-A 44C6G AQB-A 0 44C6G AQB-A 44C6G AQB-A 40 44C6G AQB-A 0 44C6G NQB-A Non-Automatic 44C6G For list prices, see Price and Availability Digest (PAD). Complete breaker does not include mounting bases. Type required must be ordered separately. Mounting bases include cable lugs. Note: These breakers are non-repairable per NAVSEA letter, serial number 9077 Ser 0/0 EI-48, paragraph Policy, sub-paragraph, dated October 994. Circuit Breakers for Naval Shipboard Use PG0800E January 00

25 Types AQB-A, NQB-A PANELBOARD MOUNTING AND ACCESSORIES NET WEIGHT TYPE STOCK Single Base Line and Load Stabs, Front Connected 44C44G Single Base Line and Load Stabs, Rear Connected 44C44G Single Base Line Rear, Load Front Connected 44C44G Double Base Assembly Line, Bus Connected; Load, Front Connected 44C4G Handle Lock 080A9G0 Handle Boot 7B79H Technical Manual 44C9H0 DESCRIPTION For ordering information, see Page. NET WEIGHT, LBS. (KG) AQB-A Breaker.4 (.) NQB-A Breaker.9 (0.9) Single Mounting Base 0.7 (0.) Double Mounting Base. (0.7) Handle Lock.0 (0.0) AQB-A SINGLE MOUNTING BASE FRONT CONNECTED AQB-A SINGLE MOUNTING BASE REAR CONNECTED SINGLE BASE LINE STABS REAR CONNECTED LOAD STABS FRONT CONNECTED HANDLE LOCK DOUBLE MOUNTING BASE FRONT CONNECTED 4 Circuit Breakers for Naval Shipboard Use PG0800E January 00

26 Outline Dimensions AQB- A and NQB-A Breakers Dimensions in Inches /64 -/6 Breaker Mounting Holes Two #-4 Mounting Screws 4 /8 Long Supplied With Breaker Inserts in Cover () #-4 Thds. -/ -/8 7/8 9/6 C L C 7/ 4-/8 -/6 -/6 ON OFF ON OFF -/4 /8 On Trip Off Reset of Clip -/ -/8 / Dia. Hole C L C of Clip Load End 9/64 -/ -/ 4-/8 FRONT VIEW SIDE VIEW Front Panel Cutout /64 -/8 -/4 / /4 R /4 /4 -/6 -/8 -/ -/ -/6 Load Side -/8 -/8 -/8 -/8 -/8 -/8 Outline of Circuit Breaker is Indicated by Broken Line /6 Diameter for Insulation Test Wiring Diagram Line Line Load Type NQB-A Load Type AQB-A Circuit Breakers for Naval Shipboard Use PG0800E January 00

27 Types AQB-A, NQB-A Outline Dimensions Single Base Units Dimensions in Inches Line and Load Stabs Front Connected 9/64 -/6 -/ C L C Line -7/ /8-7/6 / C L C Cir. Bkr. / -/8 /4 Mtg Holes () -7/8 0- Thds. -/6 Load /64 -/8 -/8 -/ Wire Connection Line and Load Stabs Back Connected -/6 -/ /8 -/6 Line -9/64 9/64 C L C -7/ / -/ C L C r. Bkr. / /4 Mtg -/8 0- Thds. -/64 Load -/8 -/8 -/ Wire Connection Line Stabs Back Connected, Load Sides Front Connected -/6 -/ Line -9/64 -/6 /8 9/64 C L C -7/ / C L C r. Bkr. /4 / -/8 0- Thds. Mtg Holes -/6 () -7/64 Load -/8 -/8 -/ Wire Connection 6 Circuit Breakers for Naval Shipboard Use PG0800E January 00

28 Outline Dimensions Double Base Assembly Panelboard Dimensions in Inches / C L of Circuit Breakers Line Load 9/64 -/8 -/6 C L of Base -/ -/ -/8 Load Mounting Holes (4) / /4 /4 Line / -9/ -9/6-9/ -/6 / -/6 -/8 -/6 -/8 -/6 #0- -7/ -7/ Thds. / /8 Wire Connectors / LINE BUS CONNECTED, LOAD FRONT CONNECTED #0- Thread #0- Thread Circuit Breakers for Naval Shipboard Use PG0800E January

29 Types AQB-A, NQB-A Characteristic Time-Current Curve Navy Type AQB-A Circuit Breaker Time-Current Curves for AQB-A Circuit Breaker (60 Hz) Hours Hour 0,000,000,000, ,000,000,000 4,000,000 0,000 0,000 0,000 40,000 0,000 00,000 0,000,000,000,000 Hours Hour,000, Time in Seconds Minute Line Ground Fault Line Line Fault Maximum Trip Time Minute Minimum Trip Time ,000,000,000 4,000,000 0,000 0,000 0,000 40,000 0,000 00,000 Note: Line to Ground fault is single-phase. Line to Line fault is three-phase. 8 Circuit Breakers for Naval Shipboard Use PG0800E January 00

30 Types AQB-A00, NQB-A00 Circuit Breakers for Naval Shipboard Use Types AQB-A00, NQB-A00 Breakers 0 Volts dc, 00 Volts ac, 00 Amperes Maximum,,000 Amperes ac, 0,000 Amperes dc I.C. Note: AQB-A00 and NQB-A00 breakers are sold for replacement only. They are no longer on the Navy Qualified Product List. AQB-A00 Specification: MIL-C amperes. 00 volts ac and 0 volts dc. - or -pole. Interrupting Rating,000 amperes ac and 0,000 amperes dc. AQB-A00 circuit breakers are designed for use in lighting and distribution panelboards and switchboards for the protection of feeder and motor branch circuits. Trip units with current ratings of,, 0, 7 and 00 can be quickly interchanged and a conversion kit is available to change a -pole, 00 volt AQB-A00 to a nonautomatic NQB-A00 circuit interrupter. NQB-A00 breakers have a maximum continuous current rating of 00 amperes, but they are used only as disconnects since there is no automatic opening device. Those breakers (and interrupters) designed for dc motor circuits and for ac feeder circuits (designated with a BF in amp rating column of price table) have fixed instantaneous settings of 600% 700% continuous current ratings. Those having a magnetic element set to trip at 00% 400% are applied on ac motor circuits (designated with a B ). Breakers designated with BE are calibrated for dc application. AQB-A00 AND NQB-A00 CIRCUIT BREAKER PRODUCT SELECTION CONTINUOUS AMPERE RATING INSTANTANEOUS TRIP SETTING IN AMPERES LOW HIGH COMPLETE BREAKER BREAKER FRAME ONLY TRIP UNIT ONLY STOCK STOCK STOCK -Pole, 0 Volts dc -BE BE BE BE BE Pole, 00 Volts ac -BF B BF B B B B Non-Automatic Pole, 0 Volts dc -BE BE BE BE BE For list prices, see Price and Availability Digest (PAD). Styles listed include slip-type connectors for rear connections. Order front terminal connectors separately if required. No additional charges for front connectors ordered with breakers or frames. Type NQB-A00 non-automatic. To convert -pole AQB breaker, order style only. Note: Breakers with ratings other than those given on this page are considered special and full description data must be provided. Circuit Breakers for Naval Shipboard Use PG0800E January

31 Types AQB-A00, NQB-A00 AQB-A00 AND NQB-A00 CIRCUIT BREAKER PRODUCT SELECTION, CONTINUED CONTINUOUS AMPERE RATING INSTANTANEOUS TRIP SETTING IN AMPERES LOW For list prices, see Price and Availability Digest (PAD). HIGH COMPLETE BREAKER BREAKER FRAME ONLY TRIP UNIT ONLY STOCK Styles listed include slip-type connectors for rear connections. Order front terminal connectors separately if required. No additional charges for front connectors ordered with breakers or frames. STOCK Type NQB-A00 non-automatic. To convert -pole AQB breaker, order style only. STOCK -Pole, 00 Volts ac -BF B BF B BF B BF B BF B Non-Automatic Note: Breakers with ratings other than those given on this page are considered special and full description data must be provided. 0 Circuit Breakers for Naval Shipboard Use PG0800E January 00

32 Front Connected Breakers For the load ends of panelboard breakers and for other front terminal applications, pressure connectors should be ordered. CABLE RANGE NAVY CABLE SIZE, MAXIMUM When breakers and the required lugs are ordered simultaneously, these lugs will be supplied without charge. N-N4 4,40 One Pressure Connector N-N40 8,90 One Pressure Connector N0-N7 7,780 One Pressure Connector Circular MILs area. Switchboard Mounting Complete breakers and frames include mounting hardware. Female slip connectors are mounted in the breaker base for OF POLES DESCRIPTION DESCRIPTION plugging onto stud projections of terminal mounting block assemblies. Order one mounting block assembly for each end of the breaker. NET WEIGHT, TERMINAL MOUNTING SUPPORTS (SET OF TWO) STOCK STOCK Mounting Block Assembly Mounting Block Assembly or Mounting Block Only One Stud Assembly Complete with 4 Nuts MOUNTING BLOCK ASSEMBLY NET WEIGHT, LBS. (KG) FRAME NET WEIGHT, LBS. (KG) -Pole.7 (.) -Pole AQB 7.8 (.4) -Pole NQB 7.8 (.4) -Pole. (.) -Pole AQB 7.88 (.6) -Pole NQB 7.88 (.6) COMPLETE BREAKER NET WEIGHT, LBS. (KG) TRIP UNIT NET WEIGHT, LBS. (KG) -Pole AQB 0.00 (4.) -Pole AQB.6 (.) -Pole NQB 8.7 (4.0) -Pole NQB.8 (0.6) -Pole AQB 0.7 (4.9) -Pole AQB.88 (.) -Pole NQB 9.0 (4.) -Pole NQB.6 (0.7) Additions Handle Lock When specified, order style One furnished without charge per every 0 breakers, when requested. NSN: Fungus-Moisture Resistant Treatments (JAN-T-, JAN-C-7 or MIL-V-7) if specified, contact Eaton. External parts are coated; trip units are not treated. Technical Manual Navships per MIL-M-07 When required, specify IB-9-06-CIA. Individual Reproductions When required, reproductions of master drawings, outline drawings and certification sheets can be ordered as follows: ITEM DESCRIPTION Full size photolithic tracing of master drawing on vellum Outline and drilling plan on vellum Certification data on vellum 4 Reproductions of Items, or Drawings Available Master drawing -JF-60; rear connected breaker outline, drilling and wiring diagram 0-B-88; front connected breaker outline, drilling and wiring diagram 0-B Cycle Breakers Refer to Eaton. For ordering information, see Page. Circuit Breakers for Naval Shipboard Use PG0800E January 00

33 Types AQB-A00, NQB-A00 Outline Dimensions AQB-A00 and NQB-A00 Breakers Dimensions in Inches /8 6 Thd. Terminal Blocks are not Supplied with Breakers but must be Ordered Separately ( Requried Per Breakers) Refer to Dwg. -A-447 /6 8 Thd. -/ 4-/ Terminal Mfg. Block -9/ /8 Min. 7/8 7/8 /6-7/ R /6 /8 4-/4 7 Line End -/ 7-/ Off Load End -7/8 -/ -/4-9/6 -/8 /6 7/6 7/6-7/8 6 4-/6 /8 R 4-9/6 /8 8-/4 0 /8 Visible Ampere Rating Interchangeable Trip Unit /6 4-/6 -/6 -/6 -/ -/8 -/64 4-/ -/4.098 Dia. Hole for Handle Lock and Warning Tag -/8 -/8 /4 0 Thd. / D.ctbr Mounting Bolts and Washers (Furnished with Terminal Blocks) (4) /4 0 x -7/8 L.G. Slotted Hex Heads Bolts For -Pole Breaker Center Pole Current Carrying Parts are Omitted Slip Contact Assembly Drilling Plan For Mounting Panel (Front View) Line End 7/6 Dia. 4 Holes /6 -/8 Min. Slot C L Studs C L C C L Studs /6 -/8 Min. Slot Load End 9/6 Rad. Min. 8-/4 9/6 Rad. Min. Front Cover Cutout -/ Bkr. Frame Outline -/4 / Dia. Megger Test Holes Omit Middle Hole for -Pole -/8 6 0 /8 -/8 Circuit Breakers for Naval Shipboard Use PG0800E January 00

34 Characteristic Time-Current Curves AQB-A00 Breakers Operating Characteristics Trip Unit Rating 00 Amperes 0 C Ambient Cold Start, 60 Cycle, ac or dc. 400 Cycle Breakers Operating Characteristics Trip Unit Rating 00 Amperes 0 C Ambient Cold Start 400 Cycle ac. Time Hours Time, Minutes Seconds Hours Minutes Seconds Minimum 00 Percent Rated Current Percent Rated Current Instantaneous Trip at 00% to 400% Rating Instantaneous Trip at 600% to g Maximum Trip Unit Rating Factor To determine the trip unit rating to be used, when the load current and ambient are known, multiply the load current by the factor obtained from this curve for the known ambient. The result will be the ideal trip unit rating. However, since trip units are furnished only with standard ratings as per Navy spec., select the standard trip unit whose rating is equal to or one rating higher than the ideal rating. Specification MIL-C-76 This specification covers all thermal-magnetic AQB breakers. It requires that they carry 0% of current ratings for at least one hour and that thermal elements initiate tripping at % rated current within one hour and at 600% in seconds plus or minus %. The instantaneous magnetic settings for each continuous ratings are based on intended applications. (Thermal tripping tests are conducted with all poles in series in 0 C ambient; each pole is tested individually to check magnetic settings.) Circuit Breakers for Naval Shipboard Use PG0800E January 00

35 Types AQB-A0, NQB-A0 Circuit Breakers for Naval Shipboard Use Types AQB-A0, NQB-A0 Breakers 0 Volts dc, 00 Volts ac, 00 Amperes Maximum,,000 Amperes ac, 0,000 Amperes dc I.C. Specification: MIL-C amperes. 00 volts ac and 0 volts dc. -pole. Interrupting Rating,000 amperes ac and 0,000 amperes dc. Non-Interchangeable Trip Unit. Class: Hi Shock MIL-S-90: 0 C Ambient. AQB-A0 circuit breakers are designated for use in lighting and distribution panelboards and for switchboards in the protection of feeder and motor branch circuits. These breakers have adjustable instantaneous trip settings of LO, Intermediate, and HI. The LO setting is 00% 700% of continuous current rating. It is designed for dc motor circuits and ac feeder circuits. The HI setting is 00% 400% of continuous current rating and is designed for application on ac motor circuits. The intermediate setting may be used to increase LO setting trip amperes or decrease HI setting trip amperes as may be required. NQB-A0 circuit breakers have a maximum continuous current rating of 00 amperes. They are used only as disconnects, since they do not include an automatic opening device. Generator Breakers (Designated with a G ) are also available in other configurations. Consult Eaton. AQB-A0 AND NQB-A0 CIRCUIT BREAKER PRODUCT SELECTION TYPE TRIP UNIT AMPERE RATING For list prices, see Price and Availability Digest (PAD). Complete breaker does not include mounting bases. Type required must be ordered separately. INSTANTANEOUS TRIP SETTING AC 60 CYCLES HI LO Front connected bases include cable lugs. Cover cable sizes 88CM to 00,000CM. Only -pole breakers are furnished, for -pole applications make connections to outside poles. THERMAL MAGNETIC STOCK MAGNETIC ONLY Instantaneous trip setting at % HI or % LO. Set at LO position at factory. Manufactured to meet MIL-C 76 D or prior revisions only. STOCK AQB-A D09G DG AQB-A D09G DG AQB-A D09G DG AQB-A D09G DG4 AQB-A D09G DG AQB-A0 00G D09G NQB-A0 00 Non-Automatic 48D09G Cycle AQB-A0 H D0G DG AQB-A0 H D0G DG AQB-A0 0H D0G DG AQB-A0 7H D0G DG4 AQB-A0 00H D0G DG AQB-A0 00GH D0G G indicates generator breakers. Refer to Eaton for further information. Note: These breakers are non-repairable per NAVSEA letter, serial number 9077 Ser 0/0 EI-48, paragraph Policy, sub-paragraph, dated October Circuit Breakers for Naval Shipboard Use PG0800E January 00

36 AQB-A0 AND NQB-A0 CIRCUIT BREAKER PRODUCT SELECTION BREAKERS WITH ATTACHMENTS TYPE TRIP UNIT RATING For list prices, see Price and Availability Digest (PAD). For other configurations, call Eaton. Complete breaker does not include mounting bases. Type required must be ordered separately. INSTANTANEOUS TRIP SETTING AC 60 CYCLE HIGH LOW Front connected bases include cable lugs. Cover cable sizes 88CM to 00,000CM. Only -pole breakers are furnished, for -pole applications make connections to outside poles. ATTACHMENT STOCK 60 Hz AQB-A D4G 0 Vac Shunt Trip AQB-A D4G4 0 Vac Shunt Trip AQB-A D4G 0 Vac Shunt Trip AQB-A D4G6 0 Vac Shunt Trip AQB-A D4G7 0 Vac Shunt Trip NQB-A0 00 Non-Automatic 68D4G9 0 Vac Shunt Trip Hz AQB-A0 H D4G6 0 Vac Shunt Trip AQB-A0 H D4G7 0 Vac Shunt Trip AQB-A0 0H D4G8 0 Vac Shunt Trip AQB-A0 7H D4G9 0 Vac Shunt Trip AQB-A0 00H D4G40 0 Vac Shunt Trip Instantaneous trip setting at % HI or % LO. Set at LO position at factory. Shunt trip with IAIB Auxiliary Switch. Note: These breakers are non-repairable per NAVSEA letter, serial number 9077 Ser 0/0 EI-48, paragraph Policy, sub-paragraph, dated October 994. Circuit Breakers for Naval Shipboard Use PG0800E January 00

37 Types AQB-A0, NQB-A0 SWITCHBOARD/PANELBOARD MOUNTING TYPE NET WEIGHT, LBS. (KG) STOCK Single Base Front Connected C64G0.7 (.) Single Base Rear Connected C64G0.00 (.4) Single Base Rear Connected, Line Front Connected, Load for Use with Rear Connected Fuse Base C64G07.00 (.4) Double Base Front Connected 48D69G0.0 (.6) Double Base Rear Connected 48D69G (.8) AQB-A0 Breaker with Single Front Connected Base AQB-A0 Breaker with Single Front Connected Base AQB-A0 Single Mounting Base Rear Connected AQB-A0 Double Mounting Base Front Connected Fuse Unit Assemblies NET WEIGHT AQB-F0A and AQB-F0B fuse units are designed for use in conjunction with standard AQB-A0 circuit breakers on circuits where a fault potential of up to 00,000 amperes exists. For ordering information, see Page. DESCRIPTION NET WEIGHT, LBS. (KG) AQB-A0 Breaker 6.00 (.7) NQB-A0 Breaker.7 (.6) AQB-F0A Fuse Unit.00 (0.9) AQB-F0B Fuse Unit.00 (0.9) Fuse Unit.00 (.4) Mounting Base COMPLETE FUSE UNIT ASSEMBLY AMPERE RATING CONNECTION SHIPPED AS: FUSE UNIT FUSE UNIT MOUNTING BASE TYPE STOCK STOCK 7BG0 Front AQB-F0A 04C00H D8G BG0 Rear AQB-F0A 04C00H D8G BG0 0, 7 and 00 Front AQB-F0B 04C00H D8G BG04 0, 7 and 00 Rear AQB-F0B 04C00H D8G Individual fuses are not replaceable; replace with complete unit. To convert for use with high rating unit (AQB-F0B) in field, remove rejection pin per instructions on fuse unit mounting base nameplate. 6 Circuit Breakers for Naval Shipboard Use PG0800E January 00

38 Additions Shunt Trip Breakers can be equipped with a shunt trip attachment for tripping the breaker from a remote point, and can be supplied with coils for 0 volts, 60 cycle or for 0 volts dc. These shunt trips have momentary rated coils and are supplied with an auxiliary switch to be wired in series for protection (Auxiliary switch included with the shunt trip. Do not order separately). Shunt trips are always mounted in the right pole. Leads extend 6 inches outside of breaker. For 400 Hz shunt trip contact Eaton. To order, specify style number of standard breaker required plus shunt trip voltage and frequency. Must be factory installed. Net weight. lbs. Auxiliary Switch Breakers can be supplied with internally mounted auxiliary switch to open or close control circuits as breaker operates. Each switch provides one A contact and one B contact. A contact is closed when breaker is closed, open when breaker is open. B contact is open when breaker is closed and closed when breaker is open. When ordered with one switch it is normally mounted in right pole, may be specified mounted in left pole. A maximum of switches can be supplied: one in left and one in right pole. Order by description. Must be factory installed. Net weight. lbs. Note: One auxiliary switch normally supplied with shunt trip attachments for cut-off switch and additional switches cannot be supplied on breakers with shunt trips. Handle Lock When specified, order style NSN Handle Boot When specified, order style number 7B79H0. Rear Stud Complete with 4 nuts, style number 08B80G0. Fungus-Moisture Resistant Treatment (JAN-T-, JAN-C-7 or MIL-V-7). If specified, contact Eaton. External parts are coated. Technical Manual Navships No This booklet per MIL-M-07. When required, order BVR-TM-47C. Drawings Available 900J49 Master drawing for breaker and mounting bases. 900J49 Master drawing for breaker with fuse unit and mounting bases. 49D448 Outline and wiring diagram for breaker on single base. 64D Outline and wiring diagram for breaker with fuse unit on single base. 49D449 Outline and wiring diagram for breaker on double base. 64D6 Outline and wiring diagram for breaker with fuse unit on double base. 67D0 For fuse unit mounting base only. Individual Reproductions When required, reproduction of master drawings, outline drawings and certification sheets can be ordered as follows: ITEM DESCRIPTION Full size photolithic tracing of master drawing on vellum Outline and drilling plan on vellum Certification data on vellum 4 Reproductions of Items, or Circuit Breakers for Naval Shipboard Use PG0800E January

39 Types AQB-A0, NQB-A0, AQB-A0, NQB-A0 Outline Dimensions AQB-A0 and AQB-A0 Breakers Dimensions in Inches Copper Extensions for Megger Readings. Copper Extensions Can Be Broken Off With /6 / -/6 -/6 4-/8 -/8 -/8 /8 /6 / 6-/4 /6 -/4 -/ -/8 /64 (Recommended) ) /6 Thick Insulation /8-6 Thd. -/ -7/6 7/ -9/6 6-/ -/8 Name- Plate Line End Load End 9/ Diameter (4 Mtg. Holes) /4.90- X -/4 Rd. Head Screw /4 /4 9/ 9/ -/6 -/6 / /4 Dia. -/ /64 /4 /6 /4 Dia. -/6 7/6 /8 -/ Style C6460 -/6 For Single Breaker Mounted Base Single Breaker (Rear Mounted) 4-/8 -/6 -/ -/ / /6 Reverse Position of Lock To Prevent Breaker From Opening On Off 7/ -/6 /6-7/6-7/8 -/6 -/64 /6 /6 R / 7/6 /6 R -/8 -/8 /6 /8 R WARNING OPEN BREAKER BEFORE REMOVIN G /6 ON OFF -/64 Inserts (Insert Remove Breaker) Mtg. Bkr. On -/64 7-/ Tripped 6-/ -/6 8-/ -/ Reset T r. Mtg. Base /6 R 4-/ Off /6 Thk. 4-7/8 4-/6-7/8 /6 -/6 9/ R 7/ / Pivot Line / Style 6448 (Not Supplied With Circuit Breaker) CIRCUIT BREAKER HANDLE LOCKING DEVICE /4 7/ -9/ -/6-9/ -/ -/ -/.098 Diameter Hole for Handle Locking Device or Warning Tag Drilling Plan For Single Mounted Base -/4 6-/ -/6 -/8 -/6 -/8 /6 Breaker Outline /6 4-/8 /6 Diameter Megger Test Holes 8 Circuit Breakers for Naval Shipboard Use PG0800E January 00

40 Outline Dimensions AQB-A0 and AQB-A0 Breaker Mounting Bases Dimensions in Inches Between C L 4-/8 /6 of Next Base -/8 -/8 -/8 -/8 Copper Extensions for Megger Readings /8 /6 / /6 -/4 6-/4 -/8 -/ /6 Thk. Insulation Recommended Not Furnished) Drill / Min. Dia. Holes For Two Breaker Mounting Base For Double Mounting Base Front Connected For Double Mounting Base Rear Connected / /4 6-/ /4-0 Tap ( Holes) / /4 4-/8 -/4 4-/8 Load 7 -/ -/64 4-9/ Pivot Line 9/6 Maximum Width and Maximum Thick Copper Bus -/6 -/ -/ /4-0 Tap ( Holes) 6-/ Line 4-/8 -/6 -/ Pivot Line Complete Hardware Except for Copper Bus Bars 4 /4 Hardware upplied Copper Bus Bars /4-0 Tap ( Holes) Load /4 Dia. /4 Dia. Insulation Sheet (Not Supplied) Nameplate Front Cover Mounting Bolt Hole (6) -/6 9/ Dia. Mtg. Hole 4-/8 7/ C.90- X -/4 Round Head Screw Cable Entrance Mounting Plate -/ -/ Front Cover Cutouts for Double Mounting Base /6 Dia. Megger Test Holes /6 -/8 /6 Base Outline 4 -/4 -/6 Breaker Outline -/4 -/6 -/8 6-/ -/8 -/6 4-/8 /6 Circuit Breakers for Naval Shipboard Use PG0800E January

41 Types AQB-A0, NQB-A0, AQB-A0, NQB-A0 For Mounting of Breaker (Front Connected) For Mounting of Breaker (Rear Connected) For Dimensions of Breaker and Mounting Base, See Drawing Number 49D448. / 6-/ Copper Extensions for Megger Readings (May Be Broken Off if Not Required) -/6 4-/8 Front Panel 6-/4 -/4 AQB-A0 /6 Thick Insulation Recommended -/6 -/8 / Max. Across Corners / 6-/6 0 Rejection Screw 6 Insulation Sheet (Not Supplied) 9-/6 -/ AQB-F0A or AQB-F0B /8-6 Thd. /6 R -/8 -/4 -/8 -/4 -/6 -/8-7/8 -/4.90- Inserts () for Fuse Puller Screws /6 6-/6 Terminal for Minimum Navy Cable Thfa--88 C.M. and Maximum Navy Thfa-00-00,000 C.M. -/6 / -/ Drilling Plan For Rear Connected Studs and Mounting Bases. / -/4 9-/6 / Min. Dia. (6 Holes) for Rear Connected Studs -/8 -/8 -/6 Base Outline -/6 -/8 6 /4-0 Tap (6 Holes) for Mounting Bases Front Panel Cutout 6-9/6 -/4 / /6 Dia. Megger ( Holes) -/8 /6 4 -/4 C L of Breaker -/8 -/4 -/6 Breaker Outline 40 Circuit Breakers for Naval Shipboard Use PG0800E January 00

42 Outline Dimensions AQB-A0 and AQB-A0 Breakers, Double Base with Fuse Units Dimensions in Inches For Mounting of Two Breakers (Front Connected) For Mounting of Two Breakers (Rear Connected) For Dimensions of Breaker and Mounting Base, See Drawing Number 49D /6 R -/4-7/8 -/4 -/8 AQB-F0A or AQB-F0B -/.90- Inserts () for Fuse Puller Screws 6-/6 -/4 6-/6 -/6 AQB-A0 6-/4 /6 Thick Insulation Recommended / -/6-7/8 / Max. Across Corners 9-/6 0 6-/ -/4 6-/6 AQB-A0 /6 6-/ 7-/6 Insulation Sheet (Not Supplied) 9-7/ -/ AQB-F0A or AQB-F0B.7-6 Thd. -/8 -/6 -/4 -/8 -/6 4-/8 Terminal for Minimum Navy Cable Thfa--88 C.M. and Maximum Navy Thfa-00-00,000 C.M. Drilling Plan For Rear Connected Studs and Mounting Bases. 9-7/ 7-/6 9-/6 Base Outline -7/8.406 Min. Dia. (6 Holes) for Rear Connected Stud -/4 -/8 /6 -/4 -/4 -/8 6-/ -/6 -/8 -/6.0-0 Tap (0 Holes) for Mounting Bases Front Panel Cutout / -/4 6-9/6 6-9/6 -/4 / -/8 -/8 4 -/4 /6 -/6 -/4 -/6 Breaker Outline /6 Dia. Megger (6 Holes) Circuit Breakers for Naval Shipboard Use PG0800E January

43 Types AQB-A0, NQB-A0, AQB-A0, NQB-A0 Characteristic Time-Current Curves AQB-A0 Breakers Operating Characteristics Trip Unit Rating 00 Amperes 0 C Ambient Cold Start, 60 Cycle, ac or dc, Thermal-Magnetic. 400 Cycle Breakers Operating Characteristics Trip Unit Rating 00 Amperes 0 C Ambient Cold Start 400 Cycle ac, Thermal- Magnetic Trip Unit Rating. Time Hours Time, Minutes Seconds Hours Minutes Seconds Percent Rated Current Percent Rated Current Instantaneous Trip at 00% to 400% Rating Instantaneous Trip at 00% to g Trip Unit Rating Factor To determine the trip unit rating to be used, when the load current and ambient are known, multiply the load current by the factor obtained from this curve for the known ambient. The result will be the ideal trip unit rating. However, since trip units are furnished only with standard ratings as per Navy spec., select the standard trip unit whose rating is equal to or one rating higher than the ideal rating. Specification MIL-C-76 This specification covers all thermal-magnetic AQB breakers. It requires that they carry 0% of current ratings for at least one hour and that thermal elements initiate tripping at % rated current within one hour and at 600% in seconds plus or minus %. The instantaneous magnetic settings for each continuous ratings are based on intended applications. (Thermal tripping tests are conducted with all poles in series in 0 C ambient; each pole is tested individually to check magnetic settings.) 4 Circuit Breakers for Naval Shipboard Use PG0800E January 00

44 Characteristic Time-Current Curves Generator Breakers 0 C Ambient Cold Start G rating, 60 or 400 Cycle ac or dc, Thermal-Magnetic. Hours Hz Instantaneous 00% Rating Trip at 80% to 0% Rating Hours Hz Instantaneous 400% Rating Trip at 00% to 700% Rating Time Time Percent Rated Current Percent Rated Current Circuit Breakers for Naval Shipboard Use PG0800E January

45 Types AQB-A0RMS, NQB-A0 Circuit Breakers for Naval Shipboard Use Types AQB-A0 RMS, NQB-A0 Breakers 00 Volts ac, 00 Amperes Maximum,,000 Amperes I.C. Specifications: MIL-C amperes. 00 volts ac (No dc). 60/400 Hz (Universal). -pole. Interrupting Rating,000 amperes, 60 Hz ac. 7,00 amperes, 400 Hz ac. 00 ka with fuse kit units. Class: Hi shock MIL-S-90: 0 C ambient. AQB-A0 RMS circuit breakers are designated for use in lighting and distribution panelboards and for switchboards in the protection of feeder and motor branch circuits. The AQB-A0 RMS now features true rms sensing, which works on any waveform shape, is more accurate and is less sensitive to nuisance tripping. AQB-A0 RMS circuit breakers are form fit and function interchangeable with A0 circuit breakers. The electronic trip unit provides better shock immunity, enhanced trip curve shaping capabilities, improved selectivity and system coordination, and dramatic logistical savings. NQB-A0 circuit breakers have a maximum continuous current rating of 00 amperes. They are used only as disconnects, since they do not include an automatic opening device. AQB-A0RMS Characteristics Continuous Current Setting (6-Position Selector Switch) 0 Amperes (0,.,, 8.7, 0, ) Amperes (40, 0, 60, 7, 80, 00) Instantaneous Pickup Adjustable in multiples of or 00 ampere frame rating (6x, 8x, 0x, x, x, 0x, 0x, 40x) Short Delay Pickup Adjustable in multiples of continuous current setting (x, x, x, 7x, 9x, 0x, x, 4x) Short Delay Time Adjustable with bands Min.,,,, Max., plus new flat response curves at 00 ms, 00 ms and 00 ms. (See trip curve.) Net Weight AQB 6.0 lbs. (.7 kg.) NQB.7 lbs. (.6 kg.) Drawings Available 76D98 Master 76D60 Outline Technical Manual 44C68H0 STK- Portable Test Kit For switchboards and panelboard mounting and other accessories see Pages 6 and 7. For outline dimensions see Pages 8 4. AQB-A0 RMS AND NQB-A0 CIRCUIT BREAKER PRODUCT SELECTION AMPERES For list prices, See Price and Availability Digest (PAD). Complete breaker does not include mounting bases. Type required must be ordered separately. Front connected bases include cable lugs. Cover cable sizes 88CM to 00,000CM. STOCK 0 76D96G D96G D96G07 with Vac ST D96G08 with Vac ST D96G NQB-A Only -pole breakers are furnished, for -pole applications make connections to outside poles. ST is shunt trip which has its own built-in cutoff switch and always left pole. 44 Circuit Breakers for Naval Shipboard Use PG0800E January 00

46 MINUTE S IME IN SEC ONDS HOUR TIME IN SEC ONDS Types AQB-A0, NQB-A0 Characteristic Time-Current Curve Navy Type AQB-A0 RMS Circuit Breaker CURRENT IN MULTIPLES OF CONTINUOUS CURRENT SETTING (CCS).44x.76x Circuit Breaker Time / Current Curves (Phase Current) Time-Current Curve for AQB-A0 RMS Circuit Breaker (Long Delay and Short Delay with Flat Response) T HOUR Long Time Delay Short Delay Pickup - X Available Short Delay Settings: x, x, x, 7x, 9x,0x,x and 4x X.60x Long Time Delay X X 7X 9X See Note 6 0X 4X Short Delay Pickup - 4X Type AQB-A0 RMS Circuit Breakers Catalog Types (Basic Type) A-76D96G0 00A-76D96G0 Curve: Long Delay and Short Delay with Flat Response Available Settings Frame Rating Continuous Current Setting Short Delay (I n) (CCS) x (I ) n Setting x (CCS) (x - 4x) Breaker Type Voltage Rating 00 Vac AQB-A0 RMS Frequency 60 Hz 400 Hz (Without Fuse) Interrupting Current ka 7. ka Notes:. Curve accuracy applies from -0 Cº to + C º ambient. For possible continuous ampere derating for ambient above 0 C, º refer to Cutler-Hammer.. The end of the curve is determined by the interrupting rating of the circuit breaker. See above calculations.. AQB-A0 RMS breakers are suitable for functional field testing with test kit catalog number STK. 4. There is memory effect that can act to shorten the long delay. The memory effect comes into play if a current above the Long Delay Pick Up value exists for a time and then is cleared by the tripping of a downstream device or the circuit breaker itself. A subsequent overload will cause the circuit breaker to trip in shorter time than normal. The amount of time delay reduction is inverse to the amount of time that has elapsed since the previous overload. Approximately five minutes is required between overloads to completely reset memory.. Long Delay Pick Up is ± 0%. 6. Long Delay Time at 6x is 0- seconds. At.x i s < hour. At.x i s > hour. 7. Short Delay Pick Up is ± 0%. 8. Fixed Short Delay Time is 0%. ± X 00ms.. 00ms ms Instantaneous Setting Determines End of Curve CURRENT IN MULTIPLES OF CONTINUOUS CURRENT SETTING (CCS) CURVE NO. SC-78-0 Circuit Breakers for Naval Shipboard Use PG0800E January

47 MINUTE S IME IN SEC ONDS HOUR TIME IN SEC ONDS Types AQB-A0, NQB-A0 Characteristic Time-Current Curve Navy Type AQB-A0 RMS Circuit Breaker Time-Current Curve for AQB-A0 RMS Circuit Breaker (Long Delay and Short Delay with I t Response) T HOUR CURRENT IN MULTIPLES OF CONTINUOUS CURRENT SETTING (CCS) Long Time Delay.44x Long Time Delay Minimum Clearing 4X, SD Band Max = 6 seconds # = 8 seconds # = 4 seconds # = seconds.60x.76x Long Time Delay Maximum Clearing Time S D B and S D B and 9 0 See Note 6 Circuit Breaker Time / Current Curves (Phase Current) Type AQB-A0 RMS Circuit Breakers Catalog Types (Basic Type) A-76D96G0 00A-76D96G0 Curve: Long Delay and Short Delay with I T Response Breaker Type Voltage Rating 00 Vac AQB-A0 RMS Frequency 60 Hz 400 Hz (Without Fuse) Interrupting Current ka 7. ka Notes:. Curve accuracy applies from -0 Cº to + C º ambient. For possible continuous ampere derating for ambient above 0 º C, refer to Cutler-Hammer.. The end of the curve is determined by the interrupting rating of the circuit breaker. See above calculations.. AQB-A0 RMS breakers are suitable for functional field testing with test kit catalog number STK. 4. There is memory effect that can act to shorten the Long Delay. The memory effect comes into play if a current above the Long Delay Pick Up value exists for a time and then is cleared by the tripping of a downstream device or the circuit breaker itself. A subsequent overload will cause the circuit breaker to trip in shorter time than normal. The amount of time delay reduction is inverse to the amount of time that has elapsed since the previous overload. Approximately five minutes is required between overloads to completely reset memory.. Long Delay Pick Up is ± 0%. 6. Long Delay Time at 6x is 0- seconds. (6 seconds nominal) At.x i s < hour. At.x i s > hour. 7. Fixed Short Delay Pick Up is 0%. ± 8. Short Delay Time is ± 0%. () (Maximum) Available Settings Frame Rating Continuous Current Setting Short Delay (I n) (CCS) x (I ) n Setting x (CCS) (x - 4x) Short Delay IT response reverts to a flat response at current levels greater than 6x CCS X S D B and () SD Band () Instantaneous Setting Determines End of Curve See Note X SD Band (Maximum) Short Delay Pick Up X Available Short Delay Settings (8): X, X, X, 7X, 9X, 0X, X and 4X SD Band () SD Band () SD Band () SD Band (Minimum) Short Delay Pick Up 4X 6X CURRENT IN MULTIPLES OF CONTINUOUS CURRENT SETTING (CCS) CURVE NO. SC Circuit Breakers for Naval Shipboard Use PG0800E January 00

48 MINUTE HOURS TIME IN SECONDS Characteristic Time-Current Curve Navy Type AQB-A0 RMS Circuit Breaker CURRENT IN MULTIPLES OF I n Circuit Breaker Time / Current Curves (Phase Current) Time-Current Curve for AQB-A0 RMS Circuit Breaker (Instantaneous Response) TIME IN SECONDS HOUR X 0X Type AQB-A0 RMS Circuit Breakers Catalog Types (Basic Type) A - 76D96G0 00A - 76D96G0 Curve: Instantaneous Response Breaker Type Voltage Rating 00 Vac AQB-A0 RMS Frequency 60 Hz 400 Hz (Without Fuse) Interrupting Current ka Asym. 7. ka Asym. Frame Rating Instantaneous Setting Instantaneous Current In x(in) (Amperes) Notes:. Instantaneous Pick Up is ± %. Curve accuracy applies from -0ºC to +ºC ambient. For possible continuous ampere derating for ambient above 0ºC, refer to Cutler-Hammer.. AQB-A0 RMS breakers are suitable for functional field testing with test kit catalog number STK. NAVY TYPE AQB-A0 RMS Instantaneous Short Delay Pick-up (x I n) 8 0 Pickup (xccs) A Frame (I n) 40 4 Pole 00 V.A.C. Style number 60 or 400 Hz NSN number. 8.7 Continuous 0 0 Short Delay Min. Max. Current Band Setting (Amps, CCS) FLAT(ms) Cutler-Hammer NP69C9H08 Made in U.S.A. Date:. Amp Breaker Nameplate.4.. 8X X NAVY TYPE AQB-A0 RMS 0 Inst antaneous Pick-up (x I n ) 8 0 Short Delay Pickup (xccs) X 0X 0X A Frame (I ) 40 4 n Style number Pole 00 V.A.C. 60 or 400 Hz NSN No Continuous Short Delay Min. Max. Current Band Setting (Amp s, CCS) FLAT (ms) Cutler-Hammer NP69C9H09 Made in U.S.A. Date: Amp Breaker Nameplate.0 40X CURRENT IN MULTIPLES OF I n CURVE NO. SC-78-0 Circuit Breakers for Naval Shipboard Use PG0800E January

49 Types AQB-A0, NQB-A0 Circuit Breakers for Naval Shipboard Use Types AQB-A0, NQB-A0 Breakers 0 Volts dc, 00 Volts ac, 0 Amperes Maximum, 0,000 Amperes ac,,000 Amperes dc I.C. Specification: MIL-C amperes. 00 volts ac and 0 volts dc. - and -pole. Interrupting Ratings 0,000 amperes ac and,000 amperes dc. AQB-A0 circuit breakers are used primarily to protect feeder circuits, however, those followed by NM in the table have higher magnetic settings to allow for motor starting. Breakers with settings specifically for use with generators are designated NG in the table. These breakers are available with interchangeable trip units in ratings of, 0, 7, and 0 amperes. The nonautomatic NQB-A0 carries a 0 ampere rating and has copper conductors replacing the trip unit. Special generator breakers have trip units rated at 00, 60 and 0 amperes. AQB-A0 breakers can be ordered with undervoltage release devices, auxiliary switches and shunt trip attachments complete with auxiliary switch. These attachments are also easily installed in the field. AQB-A0 AND NQB-A0 CIRCUIT BREAKER PRODUCT SELECTION CONTINUOUS AMPERE RATING For list prices, see Price and Availability Digest (PAD). INSTANTANEOUS TRIP SETTING AMPERES COMPLETE BREAKER BREAKER FRAME ONLY TRIP UNIT ONLY AC DC LOW HIGH LOW HIGH STOCK Styles listed include slip-type connectors for rear connections. Order front terminal connectors separately if required; see Page 0. No additional charges for front connectors ordered with breakers or frames. STOCK Type NQB-A0 non-automatic. Not to be used with attachments; if required, order dummy trip unit 4D7G for -pole and 4D7G6 for -pole. STOCK -Pole 00 Volts ac, 0 Volts dc -N C68G D70G D7G0 -NM C68G04 4D70G D7G04 0-N C68G0 4D70G D7G NM C68G06 4D70G D7G06 7-N C68G07 4D70G D7G NM C68G08 4D70G D7G08 -N C68G09 4D70G D7G NM C68G0 4D70G D7G0 0-N C68G 4D70G D7G 0-NM C68G 4D70G D7G 0 Non-Auto Non-Auto C68G 4D70G0 9B70G0 -Pole 00 Volts ac, 0 Volts dc Generator Circuit Breaker Applications 00-NG 7 0 C68G 4D70G D7G 60-NG C68G4 4D70G D7G4 0-NG C68G 4D70G D7G Note: Breakers with ratings other than those given on this page are considered as special and full description data must be provided. 48 Circuit Breakers for Naval Shipboard Use PG0800E January 00

50 AQB-A0 AND NQB-A0 CIRCUIT BREAKER PRODUCT SELECTION (CONTINUED) CONTINUOUS AMPERE RATING For list prices, see Price and Availability Digest (PAD). INSTANTANEOUS TRIP SETTING AMPERES COMPLETE BREAKER BREAKER FRAME ONLY TRIP UNIT ONLY AC DC LOW HIGH LOW HIGH STOCK Styles listed include slip-type connectors for rear connections. Order front terminal connectors separately if required; see Page 0. No additional charges for front connectors ordered with breakers or frames. STOCK Type NQB-A0 non-automatic. Not to be used with attachments; if required, order dummy trip unit 4D7G for -pole and 4D7G6 for -pole. STOCK -Pole 00 Volts ac, 0 Volts dc -N C68G D70G D7G NM C68G D70G D7G N C68G D70G D7G NM C68G D70G D7G N C68G D70G D7G NM C68G D70G D7G -N C68G D70G D7G NM C68G D70G D7G N C68G D70G D7G NM C68G D70G D7G Non-Auto Non-Auto C68G D70G B70G Pole 00 Volts ac, 0 Volts dc Generator Circuit Breaker Applications 00-NG 7 0 C68G D70G D7G NG C68G D70G D7G NG C68G0 4D70G D7G0 Note: Breakers with ratings other than those given on this page are considered as special and full description data must be provided. Circuit Breakers for Naval Shipboard Use PG0800E January

51 Types AQB-A0, NQB-A0 AQB-A0, NQB-A0 CIRCUIT BREAKER PRODUCT SELECTION (CONTINUED) CONTINUOUS AMPERE RATING INSTANTANEOUS TRIP SETTING IN AMPERES COMPLETE BREAKER BREAKER FRAME ONLY TRIP UNIT ONLY AC For list prices, see Price and Availability Digest (PAD). For 400 cycle breakers with higher instantaneous trip ratings, refer to Eaton. DC LOW HIGH LOW HIGH STOCK Styles listed include slip-type connectors for rear connections. Order front terminal connectors separately if required. No additional charges for front connectors ordered with breakers or frames. STOCK Not to be used with attachments; see prior Page 48. STOCK 400 Cycle, -Pole, 00 Volts ac -NH C74G0 4D70G D446G0 0-NH C74G0 4D70G D446G0 7-NH C74G07 4D70G D446G07 -NH C74G09 4D70G D446G09 0-NH C74G 4D70G D446G 400 Cycle, -Pole, 00 Volts ac Generator Circuit Breaker Applications 00-NGH C74G 4D70G D446G 60-NGH C74G4 4D70G D446G NGH C74G 4D70G D446G 400 Cycle, -Pole, 00 Volts ac -NH C74G8 4D70G D446G NH C74G D70G D446G NH C74G D70G D446G NH C74G D70G D446G NH C74G D70G D446G Cycle, Three-Pole, 00 Volts ac Generator Circuit Breaker Applications 00-NGH C74G8 4D70G D446G NGH C74G D70G D446G NGH C74G D70G D446G Pole, 00 Volts ac, 0 Volts dc Front Connect With Lugs -N C9G8 4D70G D7G NM C9G D70G D7G N C9G0 4D70G D7G NM C9G D70G D7G N C9G 4D70G D7G NM C9G 4D70G D7G N C9G D70G D7G NM C9G 4D70G D7G N C9G D70G D7G NM C9G7 4D70G D7G Non-Auto Non-Auto 04C9G D70G B70G Note: Breakers with ratings other than those given on this page are considered as special and full description data must be provided. 0 Circuit Breakers for Naval Shipboard Use PG0800E January 00

52 Switchboard Mounting Complete breakers and frames include mounting hardware. Female slip connectors are mounted in breaker base to plug onto stud projections of terminal mounting block assemblies. Order one mounting block assembly for each end of breaker. DESCRIPTION NET WEIGHT, LBS. (KG) STOCK One Stud Assembly Complete with 4 Nuts 6 44 (0.) Terminal Mounting Block (No Studs) C68G0 (0.) Mounting Block and Stud Set ( Studs) C680G0.0 (0.7) Front Connected Breakers For connections made at front terminals, pressure-type lugs required. If specified on same order, connectors furnished no charge. One connector per terminal. Select from the table to the right. CABLE RANGE AMPERES DESCRIPTION NET WEIGHT STOCK N40-N74 0B0H N00-N 0 7 Solderless 0B0H N0-N00 0 Connector 0B0H DESCRIPTION NET WEIGHT, LBS. (KG) AQB Complete, -Pole A0 0.0 (9.) NQB Complete, -Pole N0 7.0 (7.9) -Pole AQB, NQB Frame 7.00 (7.7) AQB Trip Unit, -Pole.0 (.6) Motor Operator 8.00 (8.) KIT TO CONVERT AQB FRAME TO NQB BREAKER POLES Not to be used with attachments; see Page 48. Note: Breaker with ratings other than those given on this page are considered as special and full description data must be provided. STOCK NET WEIGHT, LBS. (KG) 9B70G (0.) 9B70G0.0 (0.) Circuit Breakers for Naval Shipboard Use PG0800E January 00

53 Types AQB-A0, NQB-A0 Additions Handle Lock If required, order style 8B496G0. One furnished no charge per 0 breakers ordered, when requested. Net weight 0. lbs. (0.07 kg). Mechanical Interlock If mechanical interlock (switchboard use) is desired for a pair of breakers, order by description. (Not submitted for Navy approval.) Auxiliary Switch The most commonly used, standard mounting is left pole with leads exiting rear when required, is style 4D79G0, national stock number Internally mounted switch is used to open or close control circuits as breaker operates and is provided with A and B contacts. A contact is normally closed when breaker is closed and open when breaker is open; B is normally open when breaker is closed and closed with breaker open. It has the following rating at given voltages: ampere, 0 or 460 volts ac; / amperes volts dc; /4 ampere 0 volts dc. Net weight, 0.7 lb. (0.08 kg). If A/B auxiliary switch is required, order Style 4D79G04, NSN Contact Eaton for other ratings or types of mounting. Fungus Moisture Resistant Treatments (JAN-T-; JAN-C-7 or MIL-V- 7): If specified, contact Eaton. External parts are coated; trip units are not treated. Technical Manual NAVSHIPS No This booklet per MIL-M-07. When required, order BVR-TM- 79A. Motor Operator 690C87G0 Vac, 60 Hz SHUNT TRIP ATTACHMENT PRODUCT SELECTION NOMINAL VOLTAGE VOLTAGE RANGE These shunt trips require a separate auxiliary switch be ordered. These shunt trips are mounted standard right pole with rear leads. These shunt trips are mounted left pole with rear leads. These shunt trips already include the required auxiliary switch. Shunt Trip Shunt trip attachments for tripping the breaker electrically from a remote point are listed in table below. Shunt trips have momentary rating only and for protection must be connected in series with auxiliary switch. Net weight, 0.70 lb. (0. kg) Contact Eaton for 400 Hz. shunt trips. STOCK (NSN) 8 Vdc 6 6 4D77G Vac D77G Vdc 6 6 4D77G Vac D77G Vdc D77G Vac D77G Vdc D77G Vac D77G Vdc 6 6 4D77G Vac D77G Vdc 6 6 4D77G Vac D77G Vdc D77G Vac D77G Vdc D77G Vac D77G Circuit Breakers for Naval Shipboard Use PG0800E January 00

54 Undervoltage Device Automatically trips breaker when line voltage drops below 40 to 60% of normal. After undervoltage coil has dropped out and tripped breaker on reduced voltage, it automatically resets by breaker action. (If undervoltage coil is energized to 80% of normal). Select device from table to the right. Net weight,. lbs. (0. kg). UNDERVOLTAGE DEVICE PRODUCT SELECTION NOMINAL VOLTAGE VOLTAGE RANGE PICKUP AND SEAL VOLTS (MINIMUM) DROPCUT VOLTAGE STOCK 40 ac, 60 Cycle Maximum 4D87G ac, 60 Cycle Minimum 4D87G dc 7 0 Minimum 4D87G dc 0 6 Minimum 4D87G Vac Maximum 4D87G You can t mount a UVR and shunt trip in same breaker; UVR right pole only. Individual Reproductions When required, reproduction of master drawings, outline drawings and certification sheets can be ordered as follows: INDIVIDUAL REPRODUCTIONS PRODUCT SELECTION ITEM DESCRIPTION Full Size Photolithic Tracing of Master Drawing on Vellum Outline and Drilling Plan on Vellum Certification Data on Vellum 4 Reproductions of Items, or Drawings Available Master drawing 900-J-76; front and rear connected breaker outline, drilling and wiring diagram 4-D-84. For ordering information, see Page. Circuit Breakers for Naval Shipboard Use PG0800E January 00

55 Types AQB-A0, NQB-A0 Outline Dimensions AQB-A0 Breaker Dimensions in Inches Note: The auxiliary switch must be used with each shunt trip. Connect one side of shunt trip in series with A contact (Closed when breaker is closed) of auxiliary switch when connecting to power supply. -/6 9/6 /4 -/8 -/4 -/6 4-/ /4 9/6 Warning Nameplate 4-/8-9/6 -/6 /4 /6 -/6 / 4-7/6 8-7/8 Visible Ampere Rating Interchangeable Trip Unit 8-/4 7-/8 C L of Breaker -7/8-7/6-7/ / -/ /8 B C /8 /6 A Line End /4-0 Mtg. Screws C L of Handle Frame Nameplate Load End Support Blocks Are Not Supplied With Breaker, But Must Be Ordered Separately. Refer to Drawing C680. All Parts Necessary to Convert a Breaker Are Included /8-6 Stud On 9-/ Tripped -/ Closed Reset Front Face of Mounting Sheet or Channel.098 Dia Hole in Handle /8-6 Stud 4-7/8 R /4 Front Sheet 7 4-/6 4-9/6 4-7/6 -/6 /4 -/ -/8 -/ /6 4-/8 -/6 -/6 -/8 /- Thd. -/ 4-/ 4 Nuts and Washer Supplied with Stud See Wiring Diagram and Drilling Plan -/8 4-/ 9-7/8 -/6 -/4 -/4 Front Connected Solderless Terminals Line End -9/6 -/ Load End -/ " Dia. -/6 /6 /8-6 Thd. Flat Washers, and Nuts Terminal Mounting Blocks -/ Are on " Centers. Front Connections Are on -/4 Centers FRONT CONNECTED SOLDERLESS TERMINALS IDENTIFICATION CABLE RANGE MCM MAXIMUM MINIMUM A B C 7 0 -/6 6-/ -9/ 0B0H /6 6-/6 0B0H /6 7-/ 6-7/ 0B0H6 Note: Front Connected Terminals are not Supplied with Circuit Breaker. 4 Circuit Breakers for Naval Shipboard Use PG0800E January 00

56 Outline Dimensions AQB-A0 Breaker Dimensions in Inches Top of Mtg. Block 7/6 Dia. 4 Holes Left Hand Side of Breaker C L of 9/6 Breaker /6 -/4 /8 Diameter. Holes for Undervoltage Release Shunt Trip or Auxiliary Switch Leads. Hole to be Drilled in Switchboard Breaker Support Bottom of Mtg. Block 9/6 Top of Breaker 8-/8 -/8 4-/6 /6 6 Recommended Minimum Distance Between Units 9-/8 /6 Line End 9-7/8 /6 -/8 Dia. 6 Holes Bottom of Breaker Load End Left Hand Side of Breaker C L Bkr. Top of Breaker -/4 -/ -/6 -/8 /4 R 6 7-/8 9/6 C L C Top reaker Stud /6 Dia. Holes for Megger Test DRILLING PLAN FOR TERMINAL MOUNTING BLOCKS FRONT SHEET DRILLING TEMPLATE Handle Locking Device (Not Supplied with Circuit Breaker) On Off Wiring Diagrams AQB Line End NQB Line End When UnderVoltage Release is Provided When Shunt Trip and Auxiliary Switch is Provided A and B Auxiliary Switch Leads 8" Long Load End d Undervoltage Release Leads 8" Long Shunt Trip Leads 8" Long Note: The auxiliary switch must be used with each shunt trip. Connect one side of shunt trip in series with A contact (Closed when breaker is closed) of auxiliary switch when connecting to power supply. Circuit Breakers for Naval Shipboard Use PG0800E January 00

57 Types AQB-A0, NQB-A0 Motor Operator On Navy Type AQB-A0 and NQB- A0 Molded Case Circuit Breakers AQB-A0 on Left With Handle Extension and Unmounted Motor Operator on Right The motor operator is a mechanism for remote circuit breaker ON and OFF switching. The motor operator is mounted to the circuit breaker and provides high speed switching with operating times of approximately 4 cycles ( milliseconds). Motor operators for use on the AQB-A0 and NQB-A0 circuit breakers are rated at Vac, 60 Hz, and require a minimum kva power source. In addition, all motor operators are equipped with an Auto-Reset feature as standard. The motor operator is designed to remotely switch a circuit breaker to its ON, OFF and relatch positions. The relatch (Auto-Reset) function will occur automatically after a circuit breaker trip operation. The motor operator is self contained and assembled in its own mounting frame which mounts on the front of the circuit breaker. When the ON or OFF remote control button is pressed, current flows to the electric motor which turns a VOLTAGE Vac 690C87G If 40 Vac required, then customer should supply own minimum kva step-down transformer per motor operator. ball bearing and screw assembly driving the carrier and roller assembly. Two rollers fit over the circuit breaker handle and move with the handle through its range of movement. Limit switches control the travel of the carrier assembly. A terminal block is provided in the mounting frame for control connections. A b contact auxiliary switch is provided for installation in the breaker for the Auto-Reset function. STOCK Net Weight, Lbs. (kg) Motor Operator 8.00 (8.). 6 Circuit Breakers for Naval Shipboard Use PG0800E January 00

58 Outline Dimensions AQB-A0 or NQB-A0 Circuit Breaker and Motor Operator Dimensions in Inches. C L Breaker Mounting Blocks 8..0 Breaker Outline Front Sheet C L Handle 8. (Breaker)..68 Motor Operator Nameplate.00 Ref On Tripped 9.º º 8.46R -/8 Off Reset º.º Front Sheet Circuit Breakers for Naval Shipboard Use PG0800E January

59 Types AQB-A0, NQB-A0 Motor Operator Identification Vac Motor Operator: 690C87G0. Pan Head Mounting Screw On and Relay Control Limit Switches Motor Terminal Block Handle Extension Off Limit Switch MOTOR OPERATOR INSTALLED WITH FRONT COVER REMOVED External Power 40 Vac Vac Yellow (On) Motor Black OFF ON L If Applicable UVR Breaker Aux Sw COM B Remote Switches (Momentary) 7 9 Terminal Blocks 6 Relay Socket B A 7 Relay Control LS COM NC COM NC NO On Switch LS On Switch LS COM NC NO Red (Off) Term Block Legend = = Line 4 = Off 6 = On Breaker Open Indicator Light MOTOR OPERATOR WIRING DIAGRAM 8 Circuit Breakers for Naval Shipboard Use PG0800E January 00

60 Characteristic Time-Current Curves Specification MIL-C-76 This specification covers all thermal-magnetic AQB breakers. It requires that they carry 0% of current ratings for at least one hour and that thermal elements initiate tripping at % rated current within one hour and at 600% in seconds plus or minus %. The instantaneous magnetic settings for each continuous ratings are based on intended applications. (Thermal tripping tests are conducted with all poles in series in 0 C ambient; each pole is tested individually to check magnetic settings.) Hours Minutes Time Seconds Cycles Minimum P t Rating Percent Rated Current ripping me Maximum,00,000,000 4,000 6,000 ± % 0,000,000 0,000 0,000 Hours Minutes Time Seconds Cycles Minimum Percent of Tripping t Time Rating Percent Rated Current to Min. to Min. 0 Min. or More Maximum,00,000,000 4,000 6,000 0,000,000 0,000 0,000 Hours Time, Minutes Seconds CYCLE BREAKERS Operating Characteristics Trip Unit Rating 0 Amperes 0 C Ambient Cold Start, 400 Cycle ac. Trip Unit Rating Percent Rated Current AQB-A0 Operating Characteristics Trip Unit Rating 0 Amperes 0 C Ambient Cold Start, 60 Cycle, ac or dc. AQB-A0 GENERATOR BREAKER Operating Characteristics Trip Units, Types 00NGH, 60NGH, 0NGH, 00NG, 60NG and 0NG for use with generator circuit breakers 0 C ambient Cold Start, ac or dc. Ambient Temperature, C Factor To determine the trip unit rating to be used, when the load current and ambient are known, multiply the load current by the factor obtained from this curve for the known ambient. The result will be the ideal trip unit rating. However, since trip units are furnished only with standard ratings as per Navy spec., select the standard trip unit whose rating is equal to or one rating higher than the ideal rating. Circuit Breakers for Naval Shipboard Use PG0800E January

61 Types AQB-LF00, AQB-LF0 Circuit Breakers for Naval Shipboard Use Types AQB-LF00, AQB-LF0 Breakers Type AQB-LF00, 00 Amperes Maximum, Type AQB-LF0, 0 Amperes Maximum, 00 Volts ac, 00,000 Amperes I.C. AQB-LF00 Fused Navy Circuit Breaker Application AQB-LF00 and AQB-LF0 circuit breakers are for use in low-voltage distribution systems where available fault current exceeds the interrupting ratings of standard molded case breakers but does not exceed 00,000 amperes. Like standard Navy breakers, they are designed for use in switchboards, loadcenters and panelboards. AQB-LF circuit breakers are available in three-pole design and for rear connection only. Description These breakers are essentially standard Navy circuit breakers incorporating current limiting fuses in one compact device. The fuses are mounted in a removable molded housing which plugs into and becomes an integral part of the breaker. Fuses are easily replaced from the front simply by loosening four screws and pulling out the fuse housing. An interlock prevents the breaker from being closed if any of the three fuses are blown and the fuse housing is designed so that all three fuses must be unblown before the housing can be mounted in its correct position on the breaker. Removal of the fuse housing automatically opens breaker and provides visual assurance that the circuit is disconnected. Operation The thermal-magnetic trip unit of the standard breaker provides protection on overloads and short circuits below a predetermined value without affecting the fuses. However, these specially coordinated fuses assume the fault clearing duty on high magnitude short circuits and extend the interrupting capacity to 00,000 amperes. The common trip feature of the circuit breaker is retained so that all poles open when any fuse blows. Fast acting current limiting fuses clear short circuits in less than one-half cycle. Consequently, peak let-through currents are greatly reduced and bus-supporting members or current carrying parts do not have to be designed to meet maximum peak current. Fuse Trip Lever Fuse Housing Interlock Instantaneous Trip Adjusting Wheels Slide Type Connectors for Fuse Contacts Current Limiting Fuses Fuse Plug-In Contacts AQB-LF0 Fused Navy Circuit Breaker Fuse Housing Unit Removed Note: AQB-LF00 breakers are sold for replacement only. They are no longer on the Navy Qualified Product List. 60 Circuit Breakers for Naval Shipboard Use PG0800E January 00

62 AQB-LF00 Fused Breaker Specification: MIL-C Amperes, 00 Volts ac, 60 Cycles, -Pole Interrupting Rating 00,000 Amperes Note: AQB-LF00 breakers are sold for replacement only. They are no longer on Navy Qualified Product List. AQB-LF00 breakers are designed for the same application as the AQB-A00 (nonfused) circuit breaker except that they may be applied on circuits where fault currents up to 00,000 amperes are available. Breakers designated by the suffix DF in the table have settings designed for the protection of feeder circuits and those followed by D have higher magnetic settings to allow for motor starting. AQB-LF00 FUSED BREAKER PRODUCT SELECTION CONTINUOUS AMPERE RATING INSTANTANEOUS TRIP SETTING AMPERES LOW For list prices, see Price and Availability Digest (PAD). HIGH BREAKER COMPLETE BREAKER FRAME TRIP UNIT FUSES Breaker frame consists of frame with its fuse housing unit and sliptype connectors for back connection, but does not include trip unit, fuses or mounting blocks. Order these separately, trip units and fuses from table above and mounting blocks from listings below. STOCK STOCK National stock number as follows: C74H0 = C74H0 = Pole 00 Volts ac -DF D9G6 4D90G D8G C74H0 -D D9G7 4D90G D84G C74H0 -DF D9G8 4D90G D8G C74H0 -D D9G9 4D90G D84G C74H0 0-DF D9G0 4D90G D8G C74H0 0-D D9G 4D90G D84G C74H0 7-DF 40 4D9G 4D90G D8G C74H0 7-D D9G 4D90G D84G C74H0 00-DF D9G4 4D90G D8G C74H0 00-D D9G 4D90G D84G C74H0 QUANTITY REQUIRED Switchboard Mounting Breaker frame includes mounting hardware. Female slip connectors are mounted on the rear for plugging onto stud projections of terminal mounting block assemblies. Order one for each end of the breaker. DESCRIPTION STOCK One Stud Assembly Complete with 4 Nuts Terminal Mounting Block (No Studs) Mounting Block and Stud Set ( Studs) 0A447G Circuit Breakers for Naval Shipboard Use PG0800E January

63 Types AQB-LF00, AQB-LF0 AQB-LF00 Fused Breaker Additions Individual Reproductions When required, reproductions of master drawings, outline drawings and certification sheets can be ordered as follows: ITEM DESCRIPTION Full Size Photolithic Tracing of Master Drawing on Vellum Outline and Drilling Plan on Vellum Certification Data on Vellum 4 Reproduction of Items, or Drawings Available Master drawing 900J77; outline drilling plan and wiring diagram 4D7. Handle Lock (For Shipboard Maintenance Use Only) Order style number Fungus-Moisture-Resistant Treatments (JAN-T-; JAN-C-7 or MIL-V-7) If specified, contact Eaton. External parts are coated; trip units are not treated. Technical Manual Cutler-Hammer NAVSHIPS number This booklet per MIL-M-07. When required, order BVR-TM-80. NET WEIGHT DESCRIPTION FUSE HOUSING UNIT (NO FUSES) STOCK C74G NET WEIGHT, LBS. (KG) AQB Breaker Complete -Pole.6 (6.) AQB Breaker Frame Only Complete 9.68 (4.4) With Fuse Unit Assembly Without Fuses Trip Unit -Pole.6 (.) Fuse Unit Assembly Without Fuses.6 (0.7) One Mounting Block With Studs.6 (0.7) Current Limiting Fuse 0.4 (0.) Circuit Breaker Handle Locking Device 0. (0.) 6 Circuit Breakers for Naval Shipboard Use PG0800E January 00

64 AQB-LF0 Fused Breaker Specification: MIL-C-76 0 amperes, 00 volts ac, 60 cycles, -pole. Interrupting Rating 00,000 amperes. These fused breakers are designed for applications similar to those for AQB-A0 (nonfused). However, because of their current limiting fuses, they can be applied on circuits with available fault currents up to 00,000 amperes. Undervoltage release devices, shunt trips and/or auxiliary switches are available for the AQB-LF0 and can be easily installed in the field. Those breakers identified by the suffix LM in the table have higher magnetic settings for motor starting while those carrying the suffix L are set for the protection of feeder circuits AQB-LF00 AND AQB-LF0 CIRCUIT BREAKER PRODUCTION SELECTION CONTINUOUS AMPERE RATING INSTANTANEOUS BREAKER COMPLETE BREAKER FRAME TRIP UNIT FUSES TRIP SETTING AMPERES STOCK STOCK STOCK LOW HIGH For list prices, see Price and Availability Digest (PAD). Breaker frame consists of frame with its fuse housing unit and sliptype connector for back connection, but does not include trip unit, fuses or mounting blocks. Order these separately, trip units from table above and mounting blocks from listings above. National stock number QUANTITY REQUIRED -Pole 00 Volts ac (Refer to Eaton for -Pole Styles and Prices) -L C748G D80G D8G C74H04 -LM C748G D80G D8G C74H04 0-L C748G D80G D8G C74H04 0-LM C748G D80G D8G C74H04 7-L C748G D80G D8G C74H04 7-LM C748G D80G D8G C74H04 -L C748G D80G D8G C74H04 -LM C748G D80G D8G C74H04 0-L C748G D80G D8G C74H04 0-LM C748G D80G D8G C74H04 Net Weight.00 Lbs. (4. kg) Net Weight 4.0 Lbs. (. kg) Net Weight.00 Lbs. (.4 kg) Net Weight.0 Lbs. (0.7 kg) Switchboard Mounting Breaker frame includes mounting hardware. Female slip connectors are mounted on the rear for plugging onto stud projections of terminal mounting block assemblies. Order one for each end of the breaker. DESCRIPTION STOCK One Stud Assembly Complete with 4 Nuts Terminal Mounting Block (No Studs) C68G Mounting Block and Stud Set ( Studs) C680G Circuit Breakers for Naval Shipboard Use PG0800E January

65 Types AQB-LF00, AQB-LF0 Additions Individual Reproductions When required, reproductions of master drawings, outline drawings and certification sheets can be ordered as follows: ITEM DESCRIPTION Full Size Photolithic Tracing of Master Drawing on Vellum Outline and Drilling Plan on Vellum Certification Data on Vellum 4 Reproduction of Items, or Drawings Available Master drawing 900-J-79; breaker outline, drilling plan and wiring diagram 4D0. Handle Lock (For Shipboard Maintenance Use Only) Order style number 8B496G0. Auxiliary Switch For description, see AQB-A0 breaker Page. Style number 4D79G0 same as for AQB-A0. Net weight.7 lbs. (0.08 kg). Shunt Trip Attachment To order refer to AQB-A0 breaker on Page. Style numbers and net prices are same as those for AQB-A0. Net weight.70 lbs. (0. kg). Undervoltage Device To order, refer to AQB-A0 breaker on Page. Style numbers and list prices are same as those for AQB-A0. Net weight. lbs. (0. kg). FUSE HOUSING UNIT (NO FUSES) Ordering Information See Page. Net Weights See table above. STOCK Technical Manual NAVSHIPS number 6-6. This booklet per MIL-M-07. When required, order BVR-TM- 8. NET WEIGHT, LBS. (KG) 4D8G (.0) 64 Circuit Breakers for Naval Shipboard Use PG0800E January 00

66 Outline Dimensions AQB-LF00 Breakers Dimensions in Inches /8 -/4 -/4 /6 -/ -/8 /6 Line End /4-0 4 Mtg. Bolts Supplied with Breaker. Bolts Extend /8 Below Bottom of Breaker 4-/4 4-/4 4-/ -/6 Support Blocks are Not Supplied with Breaker, but Must be Ordered Separately, Refer to Dwg. A447 All Parts Necessary to Convert a Breaker are Included /8 Mtg. Sheet 0-/ 0 8-/4 /8-7/8 -/ 4-9/6 Visible Amp. Rating Interchangeable Trip Unit -/6 -/ /6 /6 -/8 -/8 4-/4 C L Breaker -/8 /64 -/6 C L C /4-0 Mtg. Screws (Captive) On -/ Off 7 Tripped 7-/.098 Dia. Hole -/4 -/8-9/ -7/ R /64 Front Sheet Load End -9/64 -/64 -/6 /6 /8 Min. /6 /6-8 Thd. /6 /4 Dia. 4-/6 4-9/6 8-/4 /8-6 Thd. 4/64 4 Nuts and Washer Supplied with Stud Flat Washers, Lock Washers and Nuts Supplied with Terminal Mtg. Block Megger Holes /6 Diameter -4/64 -/64 0-/64 For -Pole Breaker Current Carrying Parts Are Omitted from Center Pole -/8 -/8 4-/ -/ 4-/6 Slip Contact Assembly Circuit Breakers for Naval Shipboard Use PG0800E January

67 Types AQB-LF00, AQB-LF0 Typical Wiring Diagram Wiring as Shown for -Pole Breaker. For -Pole Breaker Omit Middle Pole. Line End Removable Fuse Unit Assembly Removable Trip Unit Load End Drilling Plans and Cutout For Terminal Mounting Blocks Front Sheet Drilling Template. Top of Breaker /6 9/6 R Min. C L C Minimum Distance Between Units Line End -/8 /8 Line End Studs -/8 4-/6 /4 R Top of Breaker -/4 -/8 p Line End 7/6 Dia. (4 Holes) /6 9/6 R Min. Handle C L -/4 C L Breaker Studs 8-/4 -/8 Minimum Slot Load End -/ -7/6 C L -/ reaker 4-/6 /4 R 8 Load End DRILLING PLANS FRONT COVER CUTOUT Circuit Breaker Handle Locking Device Reverse Position of Lock to Prevent Breaker from Opening On (Not Supplied with Circuit Breaker) Off 66 Circuit Breakers for Naval Shipboard Use PG0800E January 00

68 Outline Dimensions AQB-LF0 Breakers Dimensions in Inches Warning Nameplate Frame Nameplate 4-/4 9-/4 -/ Visible Amp Rating Inter changeable Trip Unit /4-0 Mtg. Screws for Bkr. For Access Remove /6 Diameter Holes for Megger Tests 4-7/6 /64-7/6 4 -/4 8-/4 8-7/8-7/8-9/6 8 -/ /6 -/ -/6 /4 4-7/8 7-/8-9/ 7-/6 /4-0 Mtg. Screws -/ Line End.098 Dia. Hole in Handle On 9-/ ripped Of 4-9/6 4-7/8 R -/6 /6 -/8 / R 4-/8 /6 4-/8 /8 R /6 Front Sheet 4-/8 Load End -/ 7 -/6 Front Face of Mtg. Sheet or Channel H C L -/8 /- Thd. 4-/6-9/6 /6 9-7/8 -/ Support Blocks Are Not Supplied with Breaker, But Must Be Ordered Separately. Refer to Dwg. C680. All Parts Necessary to Convert a Bkr. Are Included 4 Nuts and Washer Supplied with Stud /- Thd. 4-/ 6 /8-6 Thd. Flat Washers, Lockwashers and Nuts Supplied with Terminal Mounting Blocks Typical Wiring Diagram Removable Trip Unit Removable Fuse Unit Assy. Line End AQB Breaker with Overcurrent, Short Circuit Trip and Fuses Load End Undervoltage Release Leads 8" Long A and B Aux. Switch Leads 8" Long Shunt Trip Leads 8" Long WIRING AS SHOWN FOR -POLE BREAKER; FOR -POLE BREAKER, OMIT MIDDLE POLE WHEN UNDERVOLTAGE RELEASE IS PROVIDED WHEN SHUNT TRIP AND AUXILIARY SWITCH IS PROVIDED Circuit Breakers for Naval Shipboard Use PG0800E January

69 Types AQB-LF00, AQB-LF0 Outline Dimensions AQB-LF0 Breakers Dimensions in Inches R Top of Mounting Block M Top of Breaker 7/6 Dia. /6 4 Holes Line End /6 9-/8 d C L Top Bkr. Stud T k Top of Breaker /4 9/6 Drilling Plans For Terminal Mounting Blocks Front Sheet Drilling Template. /8 Dia. Holes 4-/6-9/6 L.H. Side of Breaker /6 Bottom of Mtg. Block -/ 4-/8 4-/6 L Breaker /6 9/6 -/4 4-7/8 Undervoltage Release or Shunt Trip and Aux. Switch Lead Holes to be Breaker Support R.H. Side of Breaker 6 -/8 Dia. 6 Holes Bottom of Breaker Load End -/4 4-7/8 7-/8 /4 R -/ -/6 -/4 9/ /4 C Handle L -/8 C L Breaker /4 /6 R 4-/8 8-/4 4-/ 9-/ FOR TERMINAL MOUNTING BLOCKS FRONT SHEET DRILLING TEMPLATE Handle Locking Device (Not Supplied With Circuit Breaker.) On Off Note: The auxiliary switch must be used with each shunt trip, connect one side of shunt trip in series with A contact (closed when breaker is closed) of auxiliary switch when connecting to power supply. 68 Circuit Breakers for Naval Shipboard Use PG0800E January 00

70 Characteristic Time-Current Curves AQB-LF00 and AQB-LF0 Breakers 0,000,000 4,000,000,000, AQB - LF 00 Percent of Trip Element Rating Tripping Time Seconds ± % Less Than Hour More Than Hour Operating Characteristics Thermal Magnetic and Current Limiting Fuse 0 C Ambient - Cold Start Ac Instantaneous Trip at,00 to,400 % Rating Instantaneous Trip at 600 to 700% Rating 0,000,000 4,000,000,000, AQB - LF 0 Percent of Trip Element Rating Tripping Time Seconds ± % Less Than Hour More Than Hour Operating Characteristics Thermal Magnetic and Current Limiting Fuse 0 C Ambient Cold Start Ac Instantaneous Trip Range of 0 Amp. Trip Unit Shown 60 to,00 Amp.,00 to,000 Amp. See Table for Instantaneous Range of Other Trip Unit 0 00 Amp. 0 7 Amp Amp. Amp. Amp Amp. Amp. 7 Amp. 0 Amp. Amp... Time, Seconds ,000 0, ,00 0,000 00,000 Percent Rated Current Time, Seconds ,000 0, ,00 0,000 00,000 Percent Rated Current AQB-LF00 BREAKERS AQB-LF0 BREAKERS Trip Unit Rating To determine the trip unit rating to be used, when the load current and ambient are known, multiply the load current by the factor obtained from the curve to the right for the known ambient. The result will be the ideal trip unit rating. However, since trip units are furnished only with standard ratings as per Navy spec., select the standard unit trip whose rating is equal to or one rating higher than the ideal rating. Factor Te C Circuit Breakers for Naval Shipboard Use PG0800E January

71 Types AQB-A, AQB-L and NQB-A Circuit Breakers for Naval Shipboard Use Types AQB-A, AQB-L, NQB-A 00 Volts ac, 0 Amperes Maximum, A 0,000 Amperes I.C. and L 00,000 Amperes I.C. Breakers Specifications: MIL-C amperes, 00% Rated. AQB-A: 00 volts ac, 60/400 Hz. AQB-L: 00 volts ac, 60 Hz. NQB-A: 00 volts ac, 60/400 Hz. No dc. Interchangeable Electronic Trip with rms sensing. -pole. Interrupting Rating AQB-A: 0,000 amperes, 60 Hz ac. 0,000 amperes, 400 Hz ac. AQB-L: 00,000 amperes, 60 Hz ac. NQB-A: Non Overcurrent Protection. Class: Hi shock MIL-S-90D, 0ºC ambient. Description The AQB-A, 0 ampere circuit breaker, is form and fit interchangeable with the AQB-A0 but has an electronic trip unit and higher interrupting capacity. It is available in a -pole, ac current version only. If used to protect two ac poles, connect only the outer poles. It is a universal style with a common trip unit and 60 Hz and 400 Hz ratings. The AQB-L is a high interruption version of the AQB A in the same external package. It uses fuseless current-limiting technology to achieve 00 ka interrupting capacity so it can be used to replace the AQB-LF0 without the logistic concerns of fuse replacement. The AQB- L utilizes a smaller package and offers a significant weight reduction compared to the LF0. The -L is available in only a 60 Hz version. The NQB-A circuit breaker has a maximum continuous current rating of 0 amperes. They are used only as disconnects, since they do not include an automatic opening device. The AQB-A and L are supplied with a universal trip unit that is used in all AQB versions. The trip unit must be equipped with an adjustable rating plug (ordered separately) that determines the continuous current rating of the complete circuit breaker. Two adjustable rating plugs are available. One covers the continuous current settings of 0,, 00 and 7 amperes and the other covers the current settings of 60,0, and 00 amperes. The interchangeable electronic trip unit (ETU) has an adjustable time-current curve with selectable values of Short Time Delay Pickup (STDPU) (scaled to the CCS) and Short Time Delay (STD) for improved coordination with upstream or downstream devices. The trip unit also has an instantaneous override trip fixed at 700 A (0 x frame rating). The ETU can emulate the trip curve of the AQB-A0 by setting the STD to INST and using the STDPU to emulate an adjustable INST setting. Principle of Operation These circuit breakers are designed to provide the most modern form of low voltage circuit protection technology available, providing high interruption ratings and flexible coordination without the need for current limiting fuses. The breakers use modern electromagnetic design principles to increase the interrupting capacity (IC) to significantly higher levels than comparable AQB-A0 breakers. The AQB-L uses a reverse loop conductor design and magnetically unlatched contact arms to provide very high interrupting capacity while limiting the let-through current and limiting the fault duration to a few milliseconds. Ordering The circuit breaker is available in three styles, an AQB-A (standard IC), an AQB-L (high IC) and an NQB-A (non-automatic) switch. The breaker is completed by adding one of two styles of rating plugs, one which covers the continuous current range from 0 7 amperes and another which covers the range from amperes. An internally mounted auxiliary switch, a shunt trip and an undervoltage release are also available. AQB-A, AQB-L Characteristics Continuous Current Setting (4-Position Selector Switch) amperes (00,, 0,60) rating plug 7 0 amperes (7, 00,, 0) rating plug Instantaneous Pickup Fixed at 0 X Frame rating (700 A). Short Delay Pickup Adjustable in multiples of continuous current settings (x, x, 4x, 6x, 8x, 0x, x, x). Short Time Delay Adjustable flat response with bands: INST (.0.00 seconds) seconds ( seconds) seconds (.8.8 seconds) seconds (.8.8 seconds). 70 Circuit Breakers for Naval Shipboard Use PG0800E January 00

72 AQB-A, AQB-L AND NQB-A CIRCUIT BREAKER PRODUCT SELECTION BREAKER COMPLETE BREAKER FRAME ONLY TRIP UNIT ONLY STOCK STOCK STOCK Standard LSI AQB-A 48D8G D8G D7G AQB-L 48D8G D8G D7G Instantaneous Only AQB-A 48D8G 48D8G D7G07 AQB-L 48D8G4 48D8G D7G07 Non-Automatic NQB-A 48D8G D8G D7G06 For list prices, see Price and Availability Digest (PAD). FRONT-CONNECTED BREAKER (COMPLETE WITHOUT LUGS) ADJUSTABLE RATING PLUG BREAKER STOCK AQB-A 48D8G AQB-L 48D8G NQB-A 48D8G For list prices, see Price and Availability Digest (PAD). FRONT-CONNECTED BREAKER (COMPLETE WITH LUGS) BREAKER STOCK AMPERE RATING C0G C0G For list prices, see Price and Availability Digest (PAD). Note: Please contact Technical Resource Center for specialty part number with accessories factory installed. STOCK Note: AIC ratings are based on -phase average asymmetrical current. NQB-A 48D8G AQB-L 48D8G AQB-A 48D8G6 For list prices, see Price and Availability Digest (PAD). Circuit Breakers for Naval Shipboard Use PG0800E January

73 Types AQB-A, AQB-L and NQB-A Circuit Breaker Mounting Blocks Complete circuit breaker includes mounting hardware. Female slip connectors are included in the breaker base to plug onto stud projections on the front of terminal mounting block assemblies; these mounting blocks must be ordered separately. Order two mounting block assembly for each breaker. DESCRIPTION STOCK NET WEIGHT, LBS. (KG) Mounting Block and Stud Set ( Studs) C680G (0.7) Terminal Mounting Block (No Studs) C68G (0.) One Stud Assembly Complete with 4 nuts (0.) Front-Connected Circuit Breakers For cable connections made at front terminals, pressure-type lugs are required. If specified on order, connectors will be furnished at no charge and tulips removed. Use one connector per terminal. Select from the table below. DESCRIPTION CABLE RANGE AMPERES STOCK Solderless Connector N40-N70 0B0H N00-N 0 7 0B0H N0-N00 0 0B0H Auxiliary Switch The auxiliary switch (AS) changes state with the circuit breaker. Auxiliary switches supplied with this breaker are form C (SPDT) with lead wires. The a (normally open) contact mimics the action of the main contacts and the b (normally closed) contact is opposite. This switch is mounted in the right pole of the circuit breaker and must be factory installed. DESCRIPTION STOCK NET WEIGHT, LBS. (KG) Auxiliary Switch, a/b, Vac, 0 Amperes 48D90G (0.) Auxiliary Switch, a/b, Vac, 0 Amperes 48D90G (0.) 7 Circuit Breakers for Naval Shipboard Use PG0800E January 00

74 Shunt Trip The Shunt Trip (ST) is provided to remotely trip (open) the circuit breaker in response to a remote signal applied to the accessory device. It is available in a variety of voltage ratings (see below). It is a momentary device that draws power briefly and then is disconnected by in integral cutoff switch (included). It is mounted in the left pole of the breaker and can be installed only in the absence of an undervoltage release. NOMINAL VOLTAGE Vac, 0/60 Hz 48D9G (0.) Vac, 400 Hz 48D9G04 0. (0.) 40 Vac, 0/60 Hz 48D9G (0.) 8 Vdc 48D9G (0.) 0 Vdc 48D9G (0.) 0 Vdc 48D9G06 0. (0.) Please check with Eaton for availability. Undervoltage Release The undervoltage release (UVR) will trip the circuit breaker and hold it in a tripped condition if the control voltage to the UVR drops below 40% to 60% of nominal. After the UVR has tripped the breaker it will be mechanically reset by the opening action of STOCK the breaker and electromagnetically latched if the applied voltage returns to at least 80% of nominal. It mounts in the left pole of the circuit breaker cover and can only be used in the absence of a shunt trip device. FACTORY INSTALL ONLY. NET WEIGHT, LBS. (KG) NOMINAL VOLTAGE STOCK NET WEIGHT, LBS. (KG) Vac, 0/60 Hz 48D9G0 0. (0.) 40 Vac, 0/60 Hz 48D9G0 0. (0.) 0 Vdc 48D9G0 0. (0.) 0 Vdc 48D9G04 0. (0.) AQB-LF0 Adapter Plate This close-out plate is required when the AQB-L is used to replace an existing AQB-LF0 circuit breaker. The plate closes the hole in the switchboard or panelboard where the fuse pack of the LF0 protruded. DESCRIPTION STOCK NET WEIGHT, LBS. (KG) AQB-LF0 Close-out Plate 660C76G (0.) Circuit Breakers for Naval Shipboard Use PG0800E January

75 Types AQB-A, AQB-L and NQB-A Master Drawing 48D48. Motor Operator An electrical motor operator is available which mounts on the front face of the circuit breaker and can be used for remotely opening or closing the breaker. It provides high speed actuation with operating times of approximately 0 cycles (0.7 seconds). Motor operators for the -A or L are rated at 0 Vac but can be used at 40 Vac with a customer-supplied kva step- down transformer. A handle extension is also provided for installation on the circuit breaker handle. Eaton recommends a minimum kva power source for each motor operator. NOMINAL VOLTAGE STOCK NET WEIGHT, LBS. (KG) 0 Vac/Vdc, 60/400 Hz 48D9G (0.0) Handle Lock A handle lock can be furnished to lock the handle in either the ON or OFF position if required. It consists of a special bracket held in place with a cotter pin. DESCRIPTION STOCK NET WEIGHT, LBS. (KG) Handle Lock (0.07) Handle Extension 0A4G0 Trip Unit Tester A portable tester can be used to functionally check the circuit breaker and trip unit for overload and short circuit trip settings. The test port is located on the front of the trip unit and can be accessed while the circuit breaker is mounted. This test kit is common to all Navy circuit breakers with electronic trip units. DESCRIPTION STOCK NET WEIGHT, LBS. (KG) STK- Portable Test Kit C0G RECOMMENDED BREAKER AND ACCESSORY HARDWARE TORQUE VALUES ITEM THREAD TORQUE, IN-LBS Circuit Breaker Mounting Bolts Circuit Breaker Cover Screws.64- Mounting Block Mounting Stud Front Connect Cable Terminal.-4 8 Rear Connect Stud Nuts.00-0 Trip Unit Mounting Screws.7-44 Motor Operator Mounting Bolts Motor Operator Cover Screws.64- NET WEIGHTS DESCRIPTION AQB-A Frame 8. (8.) AQB-L Frame 8.96 (8.6) Single AQB-A Breaker with Rating Plug.97 (0.0) Single AQB-L Breaker with Rating Plug.97 (0.0) Trip Units.8 (.) Rating Plug 0.0 (0.0) NET WEIGHT, LBS. (KG) 74 Circuit Breakers for Naval Shipboard Use PG0800E January 00

76 Outline Dimensions AQB-A, AQB-L and NQB-A Breakers Dimensions in Inches AQB-L or AQB-A Breaker Four Special Screws,.0-0 Thread, for Mounting Breaker to Mounting Block..70 Maximum C Handle L Pivot OFF Pivot L 9.87 ÿ Line End Line End ÿ.7 R ÿ Line Load.4 Load End ÿ Load End.0 NQB Breaker Non-Automatic AQB Breaker, with Overcurrent and Short Circuit Trip Protection Minimum Front Panel Cutout Scale.7 =.00 Drilling Plan for Terminal Mounting Block Typical Wiring Diagram Circuit Breakers for Naval Shipboard Use PG0800E January

77 Types AQB-A, AQB-L and NQB-A Outline Dimensions AQB-A, AQB-L and NQB-A Breakers Dimensions in Inches Reverse Position of Lock to Prevent Breaker from Opening.4 Cross Section.9.9 Circuit Breaker Handle Locking Device (Not Supplied with Breaker) Closeout Plate Location Scale: Circuit Breakers for Naval Shipboard Use PG0800E January 00

78 Time-Current Curve for AQB-A and AQB-L Equipped with LES Digitrip RMS 0 Trip Units CURRENT IN MULTIPLES OF CONTINUOUS CURRENT SETTING (CCS) , TIME IN SECONDS MINUTE HOUR HOURS Long Delay Minimum Total Clearing Time. ± 0% 4 Long Delay Maximum Total Clearing Time Short Delay Pickup Settings (Tolerance ± 0%) Circuit Breaker Time/Current Curves (Phase Current) Types AQB-A and AQB-L Equipped With LES Digitrip RMS 0 Trip Units CH Cutler-Hammer A/L Rating Plug Push To 0A Trip A 7A Continuous 00A Current Setting Engaged Remove Available Rating Plugs Continuous Current Setting (CCS) 00,, 0, 60 7, 00,, 0 Breaker Type A L Short Delay Pick-upxCCS Time ms Type Voltage Rating Frequency Interrupting Current Adjustable Adjustable Typical Trip Unit Nameplate INST TEST AQB -A/L RMS 0 Trip Unit 0º C Rating Plug Catalog Number 660C0G 660C0G 00 VAC 60 Hz 400 Hz 0 ka 00 ka Short Delay Pickup Range Amperes ka Notes. Curve accuracy applies from 0 C to + C ambient. For possible continuous ampere derating for ambient above 0 C, refer to Cutler-Hammer.. For high fault current level a fixed instantaneous override is provided at 700A. (Tolerance ±0%).. The end of the curve is determined by the interrupting rating of the circuit breaker. 4. AQB-A/L s are suitable for functional field testing with test kit Cat. Number STK.. Calibration response in short delay pickup range is same for, or poles in series. 6. There are memory effects that can act to shorten the long delay. The memory effects come into play if a current above the long delay pickup value exists for a time and then is cleared by the tripping of a downstream device or the circuit breaker itself. A subsequent overload will cause the circuit breaker to trip in shorter time than normal. The amount of time delay reduction is inverse to the amount of time that has elapsed since the previous overload. Approximately five minutes are required between overloads to completely reset the memory ms ms ms..09 INST TIME IN SECONDS Fixed Instantaneous Override is 700A CURRENT IN MULTIPLES OF CONTINUOUS CURRENT SETTING (CCS) ,000 CURRENT IN AMPS 0,000 0,000 40,000 0,000 60,000 70,000 80,000 90,000 00,000 CURVE NO. SC Circuit Breakers for Naval Shipboard Use PG0800E January

79 Types AQB-L400, AQB-LL400 Circuit Breakers for Naval Shipboard Use Types AQB-L400, AQB-LL400 Breakers Types AQB-L400QF, AQB- L400QM: 0,000 Amperes I.C. and AQB-LL400QS: 00,000 Amperes I.C Amperes; 00 Volts ac, 60 Hz. AQB-LL400QS Breaker Motor Operator Mounted on Circuit Breaker AQB-L400QF, AQB-L400QM and AQB-LL400QS current limiting circuit breakers are designed for installation in switchboards for protection of generators and feeders and branch circuits with available fault currents of 0,000 amperes maximum. Description The Navy Type AQB-L400QF, AQB-L400QM, and AQB- LL400QS molded case circuit breakers are 00 Vac maximum rated devices with electronic trip units rated at 400 amperes maximum continuous current at 60 Hz. The circuit breakers are assembled as -pole units which may be used as - or -pole devices. The circuit breakers are designed to MIL-C-76 and meet the requirements of Class HI-shock, MIL-S-90. The circuit breaker electronic trip unit has adjustable short delay time and pickup trip settings which can be readily changed at the operator level to meet the shipboard system trip requirements. Four interchangeable rating-plugs are available to select the continuous current rating of 0, 00, 0 or 400 amperes. Also provided is a non-adjustable inverse time delay tripping action for overload conditions, and instantaneous tripping for protection against short circuit conditions that exceed the preset short delay pickup setting. In open air at 0 C, the circuit breaker will carry continuously a current equal to the ampere rating of the installed rating plug. The calibration of the trip unit is insensitive to ambient temperatures over a range of -0 C to +70 C. Operation The AQB-L400QF, AQB- L400QM, and AQB-LL400QS current limiting circuit breakers (without the need for current limiting fuses) are designed to provide circuit protection for low voltage distribution systems. The circuit breakers will disconnect a load from an electrical supply when the handle is operated, when an overcurrent or short circuit condition develops, or when the push-to-trip button in the trip unit is manually pressed. A complete breaker consists of a breaker, rating plug plus mounting blocks and is available with numerous attachments such as electrical operator, shunt trip, undervoltage release and auxiliary switches to perform varied auxiliary functions. The circuit breaker has a springloaded independent over-toggle operating mechanism that provides a quick-make quick-break trip-free operation. The operating mechanism also provides the electro-mechanical means to open the contacts when trip conditions occur. When current is flowing through the contacts of the circuit breaker, the positions of the lower contact arms and the moving contact arms induce opposing magnetic fields. The resulting opposing forces along the magnetic flux lines cause rapid contact blow-apart under high current fault conditions. The AQB-L400QF and AQB-L400QM circuit breakers have slot motors for each moving contact arm to intensify the magnetic field and further increase the blow-apart effect. Specifications AQB-L400QF, AQB-L400QM and AQB-LL400QS Current Limiting Navy Circuit Breakers Amperes, 00 Volts ac, 60 Hz. Note: Call Eaton for 400 Hz. -Pole Only, 0 C Ambient. Continuous Current Rating 0, 00, 0 and 400 Amperes. Current Interruption Ratings AQB-L400QF 0,000 Amperes AQB-L400QM 0,000 Amperes AQB-LL400QS 00,000 Amperes Protective Functions Long Delay Pickup (Minimum Thermal Trip) (Fixed) % to 6% (All Ratings) Protective Functions Short Delay Pickup (Adjustable) AQB-L400QF Amperes AQB-L400QM Amperes AQB-LL400QS Amperes Short Delay Time (Adjustable) MIN,,,, MAX. ( Bands) See Trip Curves or MIL-Spec Instantaneous Pickup (Fixed) AQB-L400QF 80 Amperes AQB-L400QM 80 Amperes AQB-LL400QS 600 Amperes 78 Circuit Breakers for Naval Shipboard Use PG0800E January 00

80 This enables these circuit breakers to have an interrupting rating of 0 ka compared with the AQB-LL400QS rating of 00 ka. Slot Motor MAGNETIC FIELD WITH SLOT MOTOR Upper Contact Arm Lower Contact m Line End Conductor A push-to-trip button is provided to manually trip the circuit breaker. When the button is pressed, a plunger rotates the latch lever causing the circuit breaker to trip. All trip units are built into the circuit breaker frames and use electronic sensing elements. The Types AQB-L400QF, AQB- L400QM, and AQB-LL400QS Seltronic trip units provide protection functions. All trip units are supplied electrically from current sensors mounted on the main conductors in the circuit breaker base. A field-installed rating plug determines the continuous ampere rating of the trip unit. An electrical interlock causes the circuit breaker to trip at current levels of 7% or more if the rating plug is not installed. Under fault conditions, the trip unit will initiate a trip signal and energize the flux shunt trip. When the flux shunt trip operates, the plunger extends and rotates the trip lever. As the trip lever rotates, the latch lever rotates which unlatches the trigger and the circuit breaker trips. Overload Trip The trip unit initiates an ultimate trip of the circuit breaker within one hour for an overload of % to 6%, and in less time for higher overloads. Short Delay Trip For short circuit conditions that exceed the short delay pickup setting but not the instantaneous (override) pickup, the trip unit initiates a trip after the selected short delay time setting. Instantaneous Trip For short circuit conditions that exceed the instantaneous (override) pickup value, but not the current-limiting threshold, the trip unit initiates a trip with no intentional delay. AQB-L400 AND AQB-LL400 CIRCUIT BREAKER PRODUCT SELECTION BREAKER TYPE Rating Plug 0Q, 0 Amperes 0C84G Q, 00 Amperes 0C84G Q, 0 Amperes 0C84G Q, 400 Amperes 0C84G For list prices, see Price and Availability Digest (PAD). Does not include rating plug. Motor Operator The motor operator is designed to remotely switch a circuit breaker to its ON, OFF and relatch positions. The relatch function will occur automatically after a circuit breaker trip operation. The motor operator is selfcontained and assembled in its own mounting frame which mounts on the front of the circuit breaker. When the ON or OFF remote control button is pressed, MOTOR OPERATOR PRODUCT SELECTION STOCK Circuit Breaker, Navy Type (Supplied with male plug-in adapters installed f or rear connection) AQB-LL400QS 0C8G AQB-L400QF 0C8G AQB-L400QM 0C8G NQB-LL400 0C8G AQB-LL400QS Mag Only 0C8G0 AQB-L400QM Mag Only 0C8G06 TYPE current flows to the electric motor which turns a ball bearing and screw assembly driving the carrier and roller assembly. Two rollers fit over the circuit breaker handle and move with the handle through its range of movement. Limit switches control the travel of the carrier assembly. A terminal block is provided in the mounting frame for control connections. Bell alarm 7BG0 is included. STOCK Motor Operator Vac, 60 Hz 4CG If 40 Vac required, then customer should supply own minimum kva step-down transformer per motor operator. Circuit Breakers for Naval Shipboard Use PG0800E January

81 Types AQB-L400, AQB-LL400 MOUNTING BLOCK TYPE STOCK Plug-in Mounting Block, Rear Connected, Complete 0C8G (Required One Per Load or Line End) Mounting Block, Molded Base Only (For Mounting a Front Connected 0C8G0 Circuit Breaker, or as a Replacement Part) Male Slip Connectors (Replacement Part, Three Per Kit) 0C8G04 Front Connected Terminal (Required Three Per Line or Load End) 04C497G0 AUXILIARY SWITCHES TYPE STOCK a/b -40 Vac 0C86G a/b -40 Vac 0C86G a/b 0 Vdc 0C86G0 a/b 0 Vdc 0C86G06 a/b -40 Vac and a/b 0 Vdc Combination 0C86G07 SHUNT TRIP CIRCUIT BREAKERS, NAVY TYPE, AQB-L400QF, AQB-L400QM, AND AQB-LL400QS (TOP) AND MOTOR OPERATOR (BOTTOM) TYPE STOCK Shunt Trip (Left-Pole only) (Includes Build-in Cutoff Switch) Vac/8 to 0 Vdc 0C86G Vac Only 0C86G Combination Shunt Trip and a/b Auxiliary Switch (Left-Pole Only) Vac/8-0 Vdc Shunt Trip and -40 Vac Auxiliary Switch 0C86G Vac/8-0 Vdc Shunt Trip and 0 Vdc Auxiliary Switch 0C86G Vac Shunt Trip and -40 Vac Auxiliary Switch 0C86G0 40 Vac Shunt Trip and 0 Vdc Auxiliary Switch 0C86G SHORE POWER MOTOR OPERATOR (DDG- CLASS) TYPE STOCK Motor Operator Vac (Works with UVR) 4C4G SHORE POWER BREAKER (DDG- CLASS) TYPE STOCK LL400QS with UVR and AB 4C4G Circuit Breakers for Naval Shipboard Use PG0800E January 00

82 BREAKER WITH UNDERVOLTAGE RELEASE (Only Left-Pole) UVR and Circuit Breaker must be ordered as an integral unit. TYPE STOCK Individual Reproduction When required, reproduction of outline drawings and certification sheets can be ordered as follows. Undervoltage Release Mechanism (LH) Factory Installed AQB-L400QF with Vac 0C8G AQB-L400QF with 40 Vac 0C8G6 AQB-L400QF with 0 Vdc 0C8G7 AQB-L400QF with 0 Vdc 0C8G AQB-L400QM with Vac 0C8G9 AQB-L400QM with 40 Vac 0C8G0 AQB-L400QM with 0 Vdc 0C8G AQB-L400QM with 0 Vdc 0C8G AQB-LL400QS with Vac 0C8G AQB-LL400QS with 40 Vac 0C8G AQB-LL400QS with 0 Vdc 0C8G AQB-LL400QS with 0 Vdc 0C8G4 Using externally-mounted step-down transformer supplied. Not field mountable. Switchboard Mounting Breaker frame includes mounting hardware. Stud projections are mounted on the rear of the breaker for plugging into female slip connectors of terminal mounting block assemblies. Handle Lock (For shipboard maintenance use only) order style number 700. Trip Unit Test Port Plug For extra plugs, order 09A80H0. Fungus-Moisture-Resistance Treatments (JAN-T-; JAN-C-7; MIL-V-7) If specified, contact Eaton. External parts are coated. Technical Manual When required, order 40CH0. Master Drawing 7D9. Portable Test Kit Can be used to functionally test the breaker for overload and short circuit, while breaker is mounted. When required, order catalog number STK. ITEM NET WEIGHT DESCRIPTION Outline Drawing and Drilling Plan on Vellum Certification Data on Vellum Reproduction of Items and DESCRIPTION Circuit Breaker Motor Operator Mounting Block Front Connected Terminals (Set of Three) Portable Test Kit Rating Plug Shunt Trip Auxiliary Switch Adapter Kit Style Number 690C8G0/ National Stock Number LF400 Mtg. Block 690C8G0 NET WEIGHT 0 lbs. lbs. 0 lbs. lb.-0-/4 ozs. lb.-4-/4 ozs. ozs. ozs.. ozs. Circuit Breakers for Naval Shipboard Use PG0800E January

83 Types AQB-L400, AQB-LL400 Eaton Adapter Kit and Navy Type AQB-L400 Molded Case Circuit Breaker Combination in AQB-LF400 The Navy Type AQB-L400 or AQB-LL400 circuit breakers when supplied with a factory installed Eaton AQB-L400 Adapter Kit, can be installed directly into Navy Type AQB- LF400 applications. This combination of an AQB-L400/LL400 circuit breaker and the Eaton Adapter Kit provides a direct oneto-one current limiting type L400 circuit breaker replacement for an already installed fused type LF400 circuit breaker. Existing AQB-L400/LL400 circuit breakers in the field (manufactured prior to August, 99) may need a factory modification to accept the Adapter Kit. Contact Eaton for details, if there are any questions. An Eaton AQB-L400 Adapter Kit provides the means for converting the normally male configured primary connections of an AQB-L400/LL400 current limiting circuit breaker to female configured primary connections, normally associated with an AQB-LF400 circuit breaker. A close out plate, attached directly to the front of the AQB-L400 circuit breaker with four mounting screws, provides the deadfront cover required to complete the conversion. This close out plate blanks out the hole in the switchboard door or cover, through which the LF400 fuse pack protruded. The adapter kit itself is comprised of line and load side adapter blocks, six female spring loaded primary connection adapters, a close out plate, and four mounting screws. Eaton Adapter Kit Parts Before Installation Navy Type AQB-L400 Molded Case Circuit Breaker with Adapter Kit Factory Installed Navy Type AQB-L400 Circuit Breaker and Adapter Kit Combination Plugged into AQB-LF400 Mounting Blocks Net Weight 4 Lbs. ( kg) (Breaker plus adapter). L400/LL400 BREAKER WITH ADAPTER KIT (CALL EATON FOR OTHER CONFIGURATIONS) BREAKER CONSISTS OF BREAKER FRAME PLUS PLUG PLUS ATTACHMENTS PLUS ADAPTER KIT 4C4G0 LL400QS 400Q Vac/8 Vdc ST and /40 Vac Aux. SW 690C8G0 4C4G0 L400QF 0Q None 690C8G0 4C4G0 LL400QS 400Q 40 Vac ST and A/B Aux. SW 690C8G0 4C4G04 LL400QS 400Q A/B Aux. SW 690C8G0 4C4G0 L400QM 00Q 40 Vac ST and A/B Aux. SW 690C8G0 4C4G06 LL400QS 400Q None 690C8G0 4C4G07 LL400QS 00Q 40 Vac ST and A/B Aux. SW 690C8G0 4C4G08 L400QM 0Q 40 Vac ST and A/B Aux. SW 690C8G0 4C4G09 LL400QS 0Q None 690C8G0 4C4G0 L400QM 400Q None 690C8G0 4C4G LL400QS 400Q 40 Vac UVR & A/B Aux. SW 690C8G0 4C4G L400QM 0Q Vac ST 690C8G0 4C4G L400QM 00Q Vac/8 Vdc ST and /40 Vac Aux. SW 690C8G0 (0C86G08) 4C4G4 L400QM 400Q A/B Aux. SW 690C8G0 4C4G LL400QS 400Q Vac/8 Vdc Shunt Trip (0C86G08) 690C8G0 4C4G6 LL400QS 0Q 40 Vac UVR and A/B Aux. SW 690C8G0 8 Circuit Breakers for Naval Shipboard Use PG0800E January 00

84 Outline Dimensions AQB-L400, AQB-LL400 Dimensions in Inches -/4 -/8 Line 6-/6 -/4 4-7/8 -/8 4-/6 -/8 /64 -/4-7/ 0-/ 6 9-7/ Automatic Tripped Front Surface of Mounting Panel 9-9/6 8-/ 6 6 On 4-/4 4 -/ 4-7/ /8 -/ /6 9 0' -/6 C L C Center Line of Circuit Breaker Handle 6-7/ - -/ 6 -/ /64 Reset Max -7/8 Radius 9- -/6 -/4 -/8 Load /6 4-/8 8-/4-7/ -/6-7/ 9/64 -/ Load End -7/ Line End * Conductor Height for Front Connection -/8 Load End* -/4 Line End* -/ 8 -/4 4 Circuit Breakers for Naval Shipboard Use PG0800E January

85 Types AQB-L400, AQB-LL400 Outline Dimensions AQB-L400, AQB-LL400 with Motor Operator Dimensions in Inches Line End Nut Depth /6 -/4-7/.4 0-/ 6 9-9/6 8-/6 6 On Tripped Of 9 0' -/6 C L C Circuit Breaker Handle 4-/4 6-7/ -/ /6 -/4 Load End 8-/4 8-/8 /6 0-/6-7/8 -/8 /6-8 Mounting Hardware 7-/6 -/4 -/4 -/ Circuit Breakers for Naval Shipboard Use PG0800E January 00

86 Wiring Diagrams Line AQB Breaker With Overcurrent and Short Circuit Trip Protection For -Pole Breakers Use Two Outside Poles Load Front Sheet Template Dimensions in Inches.88. Dia. Megger Holes C L C Handle.0 R R 6.06 Drilling Plan for Mounting Panel Dimensions in Inches Line End.7.70 C L C Stud C L Breaker C L C Stud.00 Load End C L C Handle Dia. - 6 Holes for.7 Mtg.Bolts.99 R Circuit Breakers for Naval Shipboard Use PG0800E January

87 Types AQB-L400, AQB-LL400 Characteristic Time-Current Curves Navy Type AQB-L400QF Circuit Breaker MINUTE HOUR HOURS 0, ,000,000,000, Minimum Trip Time ,000,000,000 4,000 Long Delay Pick-Up with Rating Plugs of 0 Amperes Maximum Trip Time CURRENT IN AMPERES,000 6,000 7,000 8,000 9,000 0,000 0,000 0,000 40,000 0,000 60,000 70,000 80,000 90,000 00,000 Rating Plug: 0Q Curve Tolerance Applies Over T -0 C to +70 C 0,000,000,000,000, HOURS HOUR MINUTE TIME IN SECONDS Short Delay Pick-Up (60 A) Low Setting (00 A) High Setting TIME IN SECONDS Short Delay Time.... MAX Setting.... MIN Setting.0 Current Limiting Threshold Fixed Instantaneous (Override) Pick-Up 80 A ±% Maximum Interrupting Time at 00 Volts AC ,000,000,000 4,000,000 6,000 7,000 8,000 9,000 0,000 CURRENT IN AMPERES 0,000 0,000 40,000 0,000 60,000 70,000 80,000 90,000 00,000 TIME-CURRENT CURVES FOR AQB-L400QF CIRCUIT BREAKER WITH 0 AMPERE RATING PLUG 86 Circuit Breakers for Naval Shipboard Use PG0800E January 00

88 Characteristic Time-Current Curves Navy Type AQB-L400QF Circuit Breaker MINUTE HOUR HOURS 0, ,000,000,000, Minimum Trip Time ,000,000,000 4,000 Long Delay Pick-Up with Rating Plugs of 00 Amperes CURRENT IN AMPERES,000 6,000 7,000 8,000 9,000 0,000 Maximum Trip Time 0,000 0,000 40,000 0,000 60,000 70,000 80,000 90,000 00,000 Rating Plug: 00Q Curve Tolerance Applies Over T -0 C to +70 C 0,000,000,000,000, HOURS HOUR MINUTE TIME IN SECONDS Short Delay Pick-Up (60 A) Low Setting (00 A) High Setting TIME IN SECONDS Short Delay Time.... MAX Setting.... MIN Setting.0 Current Limiting Threshold Fixed Instantaneous (Override) Pick-Up 80 A ±% Maximum Interrupting Time at 00 Volts AC ,000,000,000 4,000,000 6,000 7,000 8,000 9,000 0,000 CURRENT IN AMPERES 0,000 0,000 40,000 0,000 60,000 70,000 80,000 90,000 00,000 TIME-CURRENT CURVES FOR AQB-L400QF CIRCUIT BREAKER WITH 00 AMPERE RATING PLUG Circuit Breakers for Naval Shipboard Use PG0800E January

89 Types AQB-L400, AQB-LL400 Characteristic Time-Current Curves Navy Type AQB-L400QF Circuit Breaker MINUTE HOUR HOURS 0, ,000,000,000, Minimum Trip Time ,000,000,000 4,000 Long Delay Pick-Up with Rating Plugs of 0 Amperes CURRENT IN AMPERES,000 6,000 7,000 8,000 9,000 0,000 Maximum Trip Time 0,000 0,000 40,000 0,000 60,000 70,000 80,000 90,000 00,000 Rating Plug: 0Q Curve Tolerance Applies Over T -0 C to +70 C 0,000,000,000,000, HOURS HOUR MINUTE TIME IN SECONDS Short Delay Pick-Up (60 A) Low Setting (00 A) High Setting TIME IN SECONDS Short Delay Time.... MAX Setting.... MIN Setting.0 Current Limiting Threshold Fixed Instantaneous (Override) Pick-Up 80 A ±% Maximum Interrupting Time at 00 Volts AC ,000,000,000 4,000,000 6,000 7,000 8,000 9,000 0,000 CURRENT IN AMPERES 0,000 0,000 40,000 0,000 60,000 70,000 80,000 90,000 00,000 TIME-CURRENT CURVES FOR AQB-L400QF CIRCUIT BREAKER WITH 0 AMPERE RATING PLUG 88 Circuit Breakers for Naval Shipboard Use PG0800E January 00

90 Characteristic Time-Current Curves Navy Type AQB-L400QF Circuit Breaker MINUTE HOUR HOURS 0, ,000,000,000, Minimum Trip Time ,000,000,000 4,000 Long Delay Pick-Up with Rating Plugs of 400 Amperes CURRENT IN AMPERES,000 6,000 7,000 8,000 9,000 0,000 Maximum Trip Time 0,000 0,000 40,000 0,000 60,000 70,000 80,000 90,000 00,000 Rating Plug: 400Q Curve Tolerance Applies Over T -0 C to +70 C 0,000,000,000,000, HOURS HOUR MINUTE TIME IN SECONDS Short Delay Pick-Up (60 A) Low Setting (00 A) High Setting TIME IN SECONDS Short Delay Time.... MAX Setting.... MIN Setting.0 Current Limiting Threshold Fixed Instantaneous (Override) Pick-Up 80 A ±% Maximum Interrupting Time at 00 Volts AC ,000,000,000 4,000,000 6,000 7,000 8,000 9,000 0,000 CURRENT IN AMPERES 0,000 0,000 40,000 0,000 60,000 70,000 80,000 90,000 00,000 TIME-CURRENT CURVES FOR AQB-L400QF CIRCUIT BREAKER WITH 400 AMPERE RATING PLUG Circuit Breakers for Naval Shipboard Use PG0800E January

91 Types AQB-L400, AQB-LL400 Characteristic Time-Current Curves Navy Type AQB-L400QM Circuit Breaker MINUTE HOUR HOURS 0, ,000,000,000, Minimum Trip Time ,000,000,000 4,000 Long Delay Pick-Up with Rating Plugs of 0 Amperes Maximum Trip Time CURRENT IN AMPERES,000 6,000 7,000 8,000 9,000 0,000 0,000 0,000 40,000 0,000 60,000 70,000 80,000 90,000 00,000 Rating Plug: 0Q Curve Tolerance Applies Over T -0 C to +70 C 0,000,000,000,000, HOURS HOUR MINUTE TIME IN SECONDS Short Delay Pick-Up (700 A) Low Setting (00 A) High Setting TIME IN SECONDS.... Short Delay Time.... MAX Setting.0 Current Limiting Threshold.0.0 MIN Setting.0.0 Fixed Instantaneous (Override) Pick-Up 80 A ±% Maximum Interrupting Time at 00 Volts AC ,000,000,000 4,000,000 6,000 7,000 8,000 9,000 0,000 CURRENT IN AMPERES 0,000 0,000 40,000 0,000 60,000 70,000 80,000 90,000 00,000 TIME-CURRENT CURVES FOR AQB-L400QM CIRCUIT BREAKER WITH 0 AMPERE RATING PLUG 90 Circuit Breakers for Naval Shipboard Use PG0800E January 00

92 Characteristic Time-Current Curves Navy Type AQB-L400QM Circuit Breaker MINUTE HOUR HOURS 0, ,000,000,000, Minimum Trip Time ,000,000,000 4,000 Long Delay Pick-Up with Rating Plugs of 00 Amperes CURRENT IN AMPERES,000 6,000 7,000 8,000 9,000 0,000 Maximum Trip Time 0,000 0,000 40,000 0,000 60,000 70,000 80,000 90,000 00,000 Rating Plug: 00Q Curve Tolerance Applies Over T -0 C to +70 C 0,000,000,000,000, HOURS HOUR MINUTE TIME IN SECONDS Short Delay Pick-Up (700 A) Low Setting (00 A) High Setting TIME IN SECONDS.. Short Delay Time... MAX Setting... MIN Setting.0 Current Limiting Threshold Fixed Instantaneous (Override) Pick-Up 80 A ±% Maximum Interrupting Time at 00 Volts AC ,000,000,000 4,000,000 6,000 7,000 8,000 9,000 0,000 CURRENT IN AMPERES 0,000 0,000 40,000 0,000 60,000 70,000 80,000 90,000 00,000 TIME-CURRENT CURVES FOR AQB-L400QM CIRCUIT BREAKER WITH 00 AMPERE RATING PLUG Circuit Breakers for Naval Shipboard Use PG0800E January

93 Types AQB-L400, AQB-LL400 Characteristic Time-Current Curves Navy Type AQB-L400QM Circuit Breaker MINUTE HOUR HOURS 0, ,000,000,000, Minimum Trip Time ,000,000,000 4,000 Long Delay Pick-Up with Rating Plugs of 0 Amperes CURRENT IN AMPERES,000 6,000 7,000 8,000 9,000 0,000 Maximum Trip Time 0,000 0,000 40,000 0,000 60,000 70,000 80,000 90,000 00,000 Rating Plug: 0Q Curve Tolerance Applies Over T -0 C to +70 C 0,000,000,000,000, HOURS HOUR MINUTE TIME IN SECONDS Short Delay Pick-Up (700 A) Low Setting (00 A) High Setting TIME IN SECONDS..... Short Delay Time.. MAX Setting..0 MIN Setting Current Limiting Threshold Fixed Instantaneous (Override) Pick-Up 80 A ±% Maximum Interrupting Time at 00 Volts AC ,000,000,000 4,000,000 6,000 7,000 8,000 9,000 0,000 CURRENT IN AMPERES 0,000 0,000 40,000 0,000 60,000 70,000 80,000 90,000 00,000 TIME-CURRENT CURVES FOR AQB-L400QM CIRCUIT BREAKER WITH 0 AMPERE RATING PLUG 9 Circuit Breakers for Naval Shipboard Use PG0800E January 00

94 Characteristic Time-Current Curves Navy Type AQB-L400QM Circuit Breaker MINUTE HOUR HOURS 0, ,000,000,000, Minimum Trip Time ,000,000,000 4,000 Long Delay Pick-Up with Rating Plugs of 400 Amperes CURRENT IN AMPERES,000 6,000 7,000 8,000 9,000 0,000 Maximum Trip Time 0,000 0,000 40,000 0,000 60,000 70,000 80,000 90,000 00,000 Rating Plug: 400Q Curve Tolerance Applies Over T -0 C to +70 C 0,000,000,000,000, HOURS HOUR MINUTE TIME IN SECONDS Short Delay Pick-Up (700 A) Low Setting (00 A) High Setting TIME IN SECONDS Short Delay Time. MAX Setting..0 MIN Setting Current Limiting Threshold Fixed Instantaneous (Override) Pick-Up 80 A ±% Maximum Interrupting Time at 00 Volts AC ,000,000,000 4,000,000 6,000 7,000 8,000 9,000 0,000 CURRENT IN AMPERES 0,000 0,000 40,000 0,000 60,000 70,000 80,000 90,000 00,000 TIME-CURRENT CURVES FOR AQB-L400QM CIRCUIT BREAKER WITH 400 AMPERE RATING PLUG Circuit Breakers for Naval Shipboard Use PG0800E January

95 Types AQB-L400, AQB-LL400 Characteristic Time-Current Curves Navy Type AQB-LL400QS Circuit Breaker MINUTE HOUR HOURS 0, ,000,000,000, Minimum Trip Time ,000,000,000 4,000 Long Delay Pick-Up with Rating Plugs of 0 Amperes Maximum Trip Time CURRENT IN AMPERES,000 6,000 7,000 8,000 9,000 0,000 0,000 0,000 40,000 0,000 60,000 70,000 80,000 90,000 00,000 Rating Plug: 0Q Curve Tolerance Applies Over T -0 C to +70 C 0,000,000,000,000, HOURS HOUR MINUTE TIME IN SECONDS TIME IN SECONDS Short Delay Pick-Up (600 A) Low Setting (800 A) High Setting Short Delay Time.0 MAX Setting Current Limiting Threshold.0.0 MIN Setting.0.0 Fixed Instantaneous (Override) Pick-Up 600 A ±% Maximum Interrupting Time at 00 Volts AC ,000,000,000 4,000,000 6,000 7,000 8,000 9,000 0,000 CURRENT IN AMPERES 0,000 0,000 40,000 0,000 60,000 70,000 80,000 90,000 00,000 TIME-CURRENT CURVES FOR AQB-LL400QS CIRCUIT BREAKER WITH 0 AMPERE RATING PLUG 94 Circuit Breakers for Naval Shipboard Use PG0800E January 00

96 Characteristic Time-Current Curves Navy Type AQB-LL400QS Circuit Breaker MINUTE HOUR HOURS 0, ,000,000,000, Minimum Trip Time ,000,000,000 4,000 Long Delay Pick-Up with Rating Plugs of 00 Amperes CURRENT IN AMPERES,000 6,000 7,000 8,000 9,000 0,000 Maximum Trip Time 0,000 0,000 40,000 0,000 60,000 70,000 80,000 90,000 00,000 Rating Plug: 00Q Curve Tolerance Applies Over T -0 C to +70 C 0,000,000,000,000, HOURS HOUR MINUTE TIME IN SECONDS Short Delay Pick-Up (600 A) Low Setting (800 A) High Setting TIME IN SECONDS Short Delay Time.0 MAX Setting Current Limiting Threshold.0.0 MIN Setting.0.0 Fixed Instantaneous (Override) Pick-Up 600 A ±% Maximum Interrupting Time at 00 Volts AC ,000,000,000 4,000,000 6,000 7,000 8,000 9,000 0,000 CURRENT IN AMPERES 0,000 0,000 40,000 0,000 60,000 70,000 80,000 90,000 00,000 TIME-CURRENT CURVES FOR AQB-LL400QS CIRCUIT BREAKER WITH 00 AMPERE RATING PLUG Circuit Breakers for Naval Shipboard Use PG0800E January

97 Types AQB-L400, AQB-LL400 Characteristic Time-Current Curves Navy Type AQB-LL400QS Circuit Breaker MINUTE HOUR HOURS 0, ,000,000,000, Minimum Trip Time ,000,000,000 4,000 Long Delay Pick-Up with Rating Plugs of 0 Amperes CURRENT IN AMPERES,000 6,000 7,000 8,000 9,000 0,000 Maximum Trip Time 0,000 0,000 40,000 0,000 60,000 70,000 80,000 90,000 00,000 Rating Plug: 0Q Curve Tolerance Applies Over T -0 C to +70 C 0,000,000,000,000, HOURS HOUR MINUTE TIME IN SECONDS TIME IN SECONDS Short Delay Pick-Up (600 A) Low Setting (800 A) High Setting Short Delay Time..0 MAX Setting Current Limiting Threshold.0.0 MIN Setting.0.0 Fixed Instantaneous (Override) Pick-Up 600 A ±% Maximum Interrupting Time at 00 Volts AC ,000,000,000 4,000,000 6,000 7,000 8,000 9,000 0,000 CURRENT IN AMPERES 0,000 0,000 40,000 0,000 60,000 70,000 80,000 90,000 00,000 TIME-CURRENT CURVES FOR AQB-LL400QS CIRCUIT BREAKER WITH 0 AMPERE RATING PLUG 96 Circuit Breakers for Naval Shipboard Use PG0800E January 00

98 Characteristic Time-Current Curves Navy Type AQB-LL400QS Circuit Breaker MINUTE HOUR HOURS 0, ,000,000,000, Minimum Trip Time ,000,000,000 4,000 Long Delay Pick-Up with Rating Plugs of 400 Amperes CURRENT IN AMPERES,000 6,000 7,000 8,000 9,000 0,000 Maximum Trip Time 0,000 0,000 40,000 0,000 60,000 70,000 80,000 90,000 00,000 Rating Plug: 400Q Curve Tolerance Applies Over T -0 C to +70 C 0,000,000,000,000, HOURS HOUR MINUTE TIME IN SECONDS Short Delay Pick-Up (600 A) Low Setting (800 A) High Setting TIME IN SECONDS Short Delay Time..0 MAX Setting Current Limiting Threshold.0.0 MIN Setting Fixed Instantaneous (Override) Pick-Up 600 A ±% Maximum Interrupting Time at 00 Volts AC ,000,000,000 4,000,000 6,000 7,000 8,000 9,000 0,000 CURRENT IN AMPERES 0,000 0,000 40,000 0,000 60,000 70,000 80,000 90,000 00,000 TIME-CURRENT CURVES FOR AQB-LL400QS CIRCUIT BREAKER WITH 400 AMPERE RATING PLUG Circuit Breakers for Naval Shipboard Use PG0800E January

99 Type NQB-A80 Circuit Breakers for Naval Shipboard Use Type NQB-A80 00 Volts ac, 800 Amperes at 60 Hz, 60 Amperes at 400 Hz NQB-A80 CIRCUIT BREAKER PRODUCT SELECTION TYPE NQB-A80 COMPLETE BREAKER Rear Connect 488D90G0 Front Connect 488D90G0 Front Connect with AB Aux. Contact 488D90G0 Front Connect with AB Aux. Contact and 488D90G Long Studs (BIW Style) For list prices, see Price and Availability Digest (PAD). STOCK ACCESSORIES Specifications: MIL-C amperes at 60 Hz, 60 amperes at 400 Hz. 00 volts ac, 60/400 Hz. -Pole. Interrupting Rating Non-overcurrent protection. Class: Hi Shock MIL-S-90D, 0ºC ambient. DESCRIPTION Block Assembly, -Pole Auxiliary Switch, FACTORY INSTALL ONLY Note: AIC ratings are based on -phase average asymmetrical current. 64DG07 44B6G0 98 Circuit Breakers for Naval Shipboard Use PG0800E January 00

100 Outline Dimensions NQB-A80 Dimensions in Inches Removable Terminal Cover Must Be In Place While In Service Overall Length Centerline of Mounting Holes LCL.0 LCL Push To Trip C L Dia. Mounting Holes.70 Dia. C'Bore 4.4 Deep From Top.94 Dia. C'Bore.9 Deep From Bottom X.00- Tap Line End.. x.70 Slots for Attachment 6X.47 Dia. Hole Wires.0 Deep To Accept A #8 Thread Cutting Screw R.8 ON.70.7 Contact Position Indicator Red I/ON Green O/OFF White Tripped ± B Through for Attachment Leads A 0 ± Handle Pivot R Removable Terminal Cover Must Be In Place While In Service Load End Breaker Status Dimension A B On Off Tripped.7 6. Reset Handle Forces In Handle at Center Line Hole Off On On Off Trip Reset 0 Lb. 0 Lb. 60 Lb. Circuit Breakers for Naval Shipboard Use PG0800E January

101 Types AQB-A60, NQB-A60 Note: A60 PRODUCTS ARE NO LONGER AVAILABLE. Circuit Breakers for Naval Shipboard Use Types AQB-A60, NQB-A60 Breakers Amperes; 00 Volts, 60 Hz ac, 7,000 Amperes I.C. Note: AQB-A60 are sold for replacement only. They are no longer on the Navy Qualified Products List. Specification: MIL-C Amperes. 00 Volts ac, 60 Cycles Only, -Pole, 0 C Ambient. Interrupting Rating 7,000 Amperes ac (Without Delayed Instantaneous). 0,000 Amperes ac (With Delayed Instantaneous). Class: Hi Shock MIL-S-90 Vibration: MIL-STD-67- Material and Workmanship: MIL-E-97 AQB-A60 circuit breakers are designed for installation in switchboards for protection of generators and feeder and branch circuits. A complete breaker consists of a breaker plus mounting base and is available with numerous attachments such as electrical operator, shunt trip, undervoltage release and auxiliary switches to perform varied auxiliary functions. Trip units for these breakers have an adjustable instantaneous trip and are listed with and without delayed instantaneous trip for system coordination. NQB-A60 Breakers have a continuous rating of 600 amperes. They are used only as disconnects since they do not have an automatic trip device. Note: Breakers with ratings other than those listed above are considered as special and full descriptive data must be provided. 400 cycle breakers are not available. AQB-A60 AND NQB-A60 -POLE, 00 VOLTS, 60 CYCLES AC CIRCUIT BREAKER PRODUCT SELECTION Breaker Only Breaker and Mounting Base TYPE CONT. AMPERE RATING INSTANTANEOUS TRIP SETTING AC AMPERES LOW HIGH BREAKER ONLY, CONSISTS OF: FRAME (INCLUDES STABS) TRIP UNIT STOCK STOCK Without Delayed Instantaneous Trip AQB 600X DG DG0 AQB 600XM DG DG0 AQB 800X DG DG07 AQB 000X DG D4G AQB 00X DG D4G0 AQB 400X DG D4G07 AQB 600X DG D4G NQB 600 7DG D4G0 With Delayed Instantaneous Trip (XT Minimum Time Delay Seconds) AQB 00XT DG DG0 AQB 800XT DG DG07 AQB 000XT DG DG0 AQB 00XT DG DG AQB 600XT DG DG With Delayed Instantaneous Trip (XT Maximum Time Delay Seconds) AQB 00XT DG DG0 AQB 800XT DG DG07 AQB 00XT DG DG AQB 600XT DG DG For list prices, see Price and Availability Digest (PAD). 00 Circuit Breakers for Naval Shipboard Use PG0800E January 00

102 Note: A60 PRODUCTS ARE NO LONGER AVAILABLE. Mounting Base Electrical Operator Undervoltage Release Individual Reproductions Mounts in right pole only. Note: Breaker can be supplied with either shunt trip or undervoltage release, but not both. When required, reproductions of sheets through 4 of master plan 900J44 can be ordered as follows: TYPE REPRODUCTION For switchboard mounting. Includes back connectors for switchboard bus and male stabs to engage breaker. Matching stabs are supplied with breaker frame. Note: Can be field mounted. Consult factory for information. Style Number: 7D07G0 National Stock Number: Mounts to front of breaker for remote operation. 40 volt ac rating utilizes a transformer in conjunction with a 0 volt motor. If automatic reset is desired, order the circuit breaker with optional Automatic Reset Switch (See Optional Additions). Note: Can be field mounted. Consult factory for information. RATING Optional Additions STOCK 0 Vac 7D8G06 None 40 Vac 7D8G08 Assigned Note: Can be field mounted. Consult factory for information. Shunt Trip Mounts in right pole only. Has momentary rating only; coil leads must be wired in series with A contact of auxiliary switch. (8 Vdc/0 Vac or 0 Vdc/40 Vac.) Auxiliary Switch Mounts in left pole only. 4 contacts, any combination of A s and B s, (supplied as A and B unless specified) 8 contacts, any combination of A s and B s, (supplied as 4A and 4B unless specified). Automatic Reset Switch For use with motor operator when an automatic reset function is required. Factory installed only. Cable Connector Mounts to bus connector for cable connection. Each lug accepts four cables, 600 kcmil maximum lug required per bus connector. Style Number: 0C706G0 Fungus, Moisture-Resistant Treatment (JAN-C-7 or MIL-V-7): If specified, contact Eaton. External parts are coated; trip units are not treated. Drawings Master plan: 900J44 Sheet of 4: Breaker Only and Wiring diagrams. Sheet of 4: Trip Unit, Curves and Attachments. Sheet of 4: Mounting Base and Cable Connectors. Sheet 4 of 4: Motor Operator. Vellum Prints (Paper) Technical Manual NAVSHIPS No This booklet per MIL-M-07. When required, order BVR-TM- 76. Dimensions: Pages 0, 0, 04, 0 and 06. Characteristic Curves: Pages 07 and 08. NET WEIGHT, LBS. DESCRIPTION Breaker Only AQB NQB Breaker Frame (AQB and NQB) Trip Unit AQB NQB For ordering information, see Page. WEIGHT Mounting Base Only 7 Electrical Operator, Volt 7 Electrical Operator, 40 Volt Shunt Trip /4 Undervoltage Release -/4 Auxiliary Switch -/4 Cable Connector Note: Breaker can be supplied with either shunt trip or undervoltage release, but not both. Circuit Breakers for Naval Shipboard Use PG0800E January

103 Types AQB-A60, NQB-A60 Outline Dimensions AQB and NQB Circuit Breaker Frame Dimensions in Inches NQB Same except for trip unit nameplate /8 4-/ -/4 Removable Handle Extension Supplied with Breaker Mounting Screws Attachment Leads Are Brought Out Through One or More of These Openings as Required in this Side for Shunt Trip or Undervoltage. Release and Opposite Side for Auxiliary Switches, Leads Extend Minimum of 8" from Breaker Switchboard Front Panel m 9 -/ 7-7/8 -/8 6-/4 6-/8 4-/ -/4 -/ Mounting Screws B C 8 On Tripped 8 M Off l g 6-/4 R 0-/ R -9/ /8-6 Thd. 4 Screws 4-/4 4-/8 Line Load 4 4 / Diameter Megger Holes 9-7/8 Front Panel Cutout 4-/6 -/ C L of Breaker -/ Top End of Breaker 7-/ 6-7/6 /6 Radius 6-/ 8 4 Holes for Megger Test /6 Diameter Reproduced from Drawing 900J44 Sheet of 4. 0 Circuit Breakers for Naval Shipboard Use PG0800E January 00

104 Wiring Diagrams Line Line Load Load AQB NQB and Switches 6 Leads 8" Long 4 A and 4 B 6 Leads 8" Long Shunt Trip Leads 8" Long Undervoltage Release Leads 8" Long When undervoltage release and When shunt trip and auxiliary auxiliary switches are provided. switch are provided. Note: The auxiliary switch must be used with each shunt trip. Connect one side of shunt trip in series with A contact (closed when breaker is closed) of auxiliary switch when connecting to power supply. Reproduced from Drawing 900J44 Sheet of 4. Circuit Breakers for Naval Shipboard Use PG0800E January

105 Types AQB-A60, NQB-A60 Outline Dimensions Mounting Base Dimensions in Inches -/ 4 4 7/6 Dia. /4 -// -// /4 -/6 -/8 Switchboard Mounting Angle 4-/8 Switchboard Back Panel -/ /4 9 -/8 TOP VIEW -7/6 MOUNTING BASE With cable connections style 0C706G0 lug capacity four 600 MCM cables per lug. -/ /6 4-/8 -/6 4 / Dia. 8 Holes (Mounting Base) 9-/8 Approximate Switchboard Mounting Angle All Connectors May Be Rotated 90º -9/ / 6-/6 Switchboard Front Panel Line -/4 Stab 6-/6 4-/6 4-/8 6-/6 6-/8 /8-6 Tap 4 Holes (Breaker Mounting) /4 Load -/4 6 Stab /4 9/ FRONT VIEW SIDE VIEW Cutout for Switchboard /8 4-/8 7-/6 / Dia. 8 Holes 4-/6 -/ C L C of Breaker -/ Top End of Breaker 6-/6 7-/ -/ 6-/6 Outline of Mounting Base 6-/8 /6 Radius 6-7/6 6-/ Reproduced from Drawing 900J44 Sheet of 4 /8 6-7/6 -/8-7/8 BACK PANEL FRONT PANEL CUTOUT 8 4 Holes for Megger Test /6 Diameter 04 Circuit Breakers for Naval Shipboard Use PG0800E January 00

106 Outline Dimensions Electrical Operator Dimensions in Inches Line End Reset M Of f ripped /4 Dia. Removable Handle Used for Manual Operation Only -7/6 Rad. Load End AQB-A60 Breaker -9/ Wiring Diagrams Limit Switches () LS NC COM Yello w Motor Black 0 Volts ac Supply Line Off On LS Brown COM Terminal Blocks Automatic Reset Switch (Optional) Off/Reset On Control Device Must Have Non-Maintained Type Contacts Supplied by Customer WIRING DIAGRAM FOR 0-VOLT AC ELECTRICAL OPERATOR Limit Switches () LS 40/0 Volt ac Transformer 40 Volts ac Supply 0 Volts ac NC COM Black Yello w LS Brown COM Terminal Blocks Motor Automatic Reset Switch (Optional) Off/Reset On Control Device Must Have Non-Maintained Type Contacts Supplied by Customer WIRING DIAGRAM FOR 40-VOLT AC ELECTRICAL OPERATOR Reproduced from Drawing 7D46 Circuit Breakers for Naval Shipboard Use PG0800E January

107 Types AQB-A60, NQB-A60 Switchboard Door Cutout Dimensions in Inches Cover Plate (Picture on Right) / Mounting Holes for Mounting Base Cutout 8-/ / /6- Tap () Holes 9-/ -/8 Provisions Required for Removable Handle Storage 7-/6 Insert Handle Here C L of Breaker SWITCHBOARD DOOR CUTOUT FOR ELECTRICALLY OPERATED BREAKER Gasketed Cover / 9/ Diameter Hole 0-/ 9-/ Captive Screw -/ GASKETED COVER FOR SWITCHBOARD DOOR CUTOUT (GASKET CEMENTED TO COVER) Electrical Operator NOMINAL VOLTAGE VOLTAGE RANGE 0 Volts ac D8G06 40 Volts ac D8G08 A transformer is provided in the operator frame. Reproduced from Drawing 7D46 06 Circuit Breakers for Naval Shipboard Use PG0800E January 00

108 Characteristic Time-Current Curves Operating Characteristics Trip unit rating amperes 0 C ambient. Cold start. 60 cycles. MINUTE HOUR HOURS Time in Seconds 0, ,000,000, Maximum Minimum Instantaneous Trip See Ta r alues Without Ti,000,000 Maximum Time Delay Unit,000 4,000,000 7,000 Minimum Time Delay Unit 0,000 0,000 MINUTE HOUR HOURS Time in Seconds 0, ,000,000, Maximum Minimum 600 Amp Thermal Element , ,000 Maximum Time Delay Unit,000,000 Minimum Time t Without Time Delay Unit 4,000,000 7,000 0,000 0,000 Percent Rated Current Amperes Times 0 AQB-A60 STANDARD BREAKER EXPANDED TIME DELAY CURVE Reproduced from Drawing 900J44 Sheet of 4 PERCENT OF TRIP ELEMENT RATING TRIPPING TIME to 60 Seconds Less Than Hour 0 Hour or More INSTANTANEOUS TRIP SETTING IN AMPERES ±0% AMPERE RATING LOW 4 HIGH 00XT XT X XM ,000, X XT XT X XT X XT XT X ,000, X ,000, XT ,000, XT ,000,000 Circuit Breakers for Naval Shipboard Use PG0800E January

109 Types AQB-A60, NQB-A60 Characteristic Time-Current Curves, Continued Ambient Te C Factor DERATING CURVE. Known Conditions: (A) Ambient (B) Load Current To determine the load current on which a trip unit may be used when ambient is known, divide the trip unit rating by the value obtained from this curve for the known ambient. The result will be the maximum load current on which the trip unit should be used. Factor for change in current rating of circuit breaker with change in ambient temperature. Application. Known Conditions: (A) Ambient (B) Load Current To determine trip unit rating to be used when the load current and ambient are known, multiply the load current by the factor obtained from this curve for the known ambient. The result will be the ideal trip unit rating, however, since trip units are furnished with only standard ratings as per Navy Specs, select the standard trip unit whose rating is equal to or one rating higher than the ideal rating. Reproduced from Drawing 900J44 Sheet of 4 08 Circuit Breakers for Naval Shipboard Use PG0800E January 00

110 Types AQB-A60, NQB-A60 Circuit Breakers for Naval Shipboard Use Types AQB-A60, NQB-A60 Breakers Type AQB-A60 8,000 Amperes Symmetrical I.C Amperes; 00 Volts ac, 60 Hz AQB-A60 Navy Breaker with Cassette The AQB-A60 is a compact, low maintenance, low voltage circuit breaker in an insulated case providing high interrupting capability and a short-time withstand rating in a drawout frame. It is a militarized version of the Cutler-Hammer Systems Power Breaker (SPB) and it meets the requirements of MIL-C-76/, MIL-S-90 Shock and MIL-STD-67- vibration. The AQB-A60 has protection features which are identical to those provided by Navy type air circuit breakers as per MIL-C-787. Master Drawing 76D08 Outline Drawing 77D0 Technical Manual 69CH0 Applications Main generator and tie breaker on small combatant ships. Load center feeder breaker on larger ships. Bus transfer switch breaker. Ratings AQB-A60, NQB-A Vac, 60 Hz. 400 to 600 Ampere via field replaceable rating plugs. 600 ampere frame 800 to 600 amperes. 800 ampere frame 400 to 800 amperes. 8 ka symmetrical rms interrupting rating or 00 ka asymmetrical rms. 0 ka symmetrical rms, 0. seconds short-time withstand rating. Trip Unit Characteristics Long time pickup fixed at 0% of rating plug. Long time delay see trip curve. Short time pickup adjustable at,.,, 4,, 6, 7 or 8 times rating plug. Short time delay adjustable at I (instantaneous), 0.0, 0.0 or 0.0 seconds. Instantaneous pickup (override) factory selectable at 0, or 0 times frame rating. Features Affordable. Compact and lightweight. Full line of field installable attachments. Secondary contacts automatically disconnect. T connector on drawout cassette allows switchboard bus runs to be vertical or horizontal. Cassette has self-contained rail extensions for withdrawing the breaker lntegral spring stored energy electric operator or manual operation. Solid-state electronic trip unit with adjustable short-time protection. Portable Test Kit for field testing Catalog number STK. Circuit Breakers for Naval Shipboard Use PG0800E January

111 Types AQB-A60, NQB-A60 AQB-A60 AND NQB-A60 CIRCUIT BREAKER PRODUCT SELECTION TYPE Instantaneous override factory set at 0x as standard. NQB-A60 does not provide overcurrent protection; switch only. Rating plugs for use with 800 ampere frame only. Rating plugs for use with 600 ampere frame only. Auxiliary switches rated 40 Vac, 0 amperes. Comes standard with breaker or cassette. STOCK AQB-A60 Circuit Breaker (800 Ampere Frame) 6649CG0 AQB-A60 Circuit Breaker (600 Ampere Frame) 6649CG0 NQB-A60 Circuit Breaker 6649CG0 Stationary Drawout Cassette 77D6G Electronic Trip Unit 660C06G0 Rating Plug, 400 Ampere 66C8G Rating Plug, 480 Ampere 66C8G Rating Plug, 60 Ampere 66C8G0 Rating Plug, 640 Ampere 66C8G09 Rating Plug, 700 Ampere 66C8G08 Rating Plug, 800 Ampere 66C8G07 Rating Plug, 800 Ampere 66C8G06 Rating Plug, 900 Ampere 66C8G0 Rating Plug, 000 Ampere 66C8G04 Rating Plug, 00 Ampere 66C8G0 Rating Plug, 400 Ampere 66C8G0 Rating Plug, 600 Ampere 66C8G0 Shunt Trip (with Cutoff Switch), Vac 69CG0 Shunt Trip (with Cutoff Switch), 40 Vac 69CG0 Undervoltage Release, Vac 69C4G0 Auxiliary Switch, 4A/4B 69CG Auxiliary Switch, 8A/8B Qty. 69CG Cell Switch, Vac 07AH0 Electrical Operator, Vac 69CG0 Spring Release, Vac 69C6G0 Lifting Beam 7D9G0 0 Circuit Breakers for Naval Shipboard Use PG0800E January 00

112 Outline and Mounting Dimensions AQB-A60 and NQB-A60 Circuit Breakers and Stationary Element Dimensions in Inches Contact Eaton for additional details ÿ Hole Per Conductor LCL Breaker Connectors Can Be Installed in the Horzonal or Vertical Position LCL Breaker Rail Extention.0 In Stored Position /4-0 Hex Bolt to Secure Rail Extensions () C L Breaker Front Panel Cutout C L Breaker C L Breaker Back Panel Cutout ÿ 4 Holes NET WEIGHT DESCRIPTION NET WEIGHT, LBS. (KG) Circuit Breaker 9 (7) Motor Operator 4 (66) Mounting Block 80 (6) Front Connected Terminals (Set of Three) () Circuit Breakers for Naval Shipboard Use PG0800E January 00

113 Type AQB-A60 Characteristic Time-Current Curves Navy Type AQB-A60 Circuit Breaker TIME IN SECONDS CURRENT IN MULTIPLES OF RATING PLUG AMPERES (I n ) , Long Delay Pickup 00 at. X Rating Plug 400 Amperes Minimum Trip Time X.X Maximum Trip Time Circuit Breaker Time/Current Curves Type AQB-A60 Circuit Breakers Available Rating Plugs Frame Rating (amperes) Style No. 66C8G0 66C8G0 66C8G0 66C8G04 66C8G0 66C8G06 66C8G07 66C8G08 66C8G09 66C8G0 66C8G 66C8G Plug Rating (amperes) Short Time Current Rating 0kA, rms, symmetrical amperes Interrupting 00 Vac, 60 Hz 8 ka, rms, symmetrical (00 ka, rms, asymmetrical) Note Trip units are suitable for functional field testing with Test Kit Cat. No. STK. For field testing using primarily injection method follow NEMA publication AB X 7X 8X 00 MS ms. 6X X 4X 00 MS 00MS I TIME IN SECONDS ms 00 ms Fixed Instantaneous Overide (Factory Selectable at 0X, X, or 0X) Available Fault Current Determines End of Curve CURRENT IN MULTIPLES OF RATING PLUG AMPERES (I n ) CURRENT IN MULTIPLES OF RATING PLUG AMPERES (I n ) CURVE NO. SC-7-99 Circuit Breakers for Naval Shipboard Use PG0800E January 00

114 Types ACB 600/000HR 00/4000HR Note: COMPLETE NEW BREAKERS ARE NO LONGER AVAILABLE. Circuit Breakers for Naval Shipboard Use Types ACB 600/ 000HR 00/ 4000HR Breakers 00 Volts ac, 4,000 Amperes Maximum, 8,000 Amperes Symmetrical I.C. ACB00/4000HR Air Circuit Breaker Shown Mounted in its Stationary Drawout Cassette ACB00/4000HR Air Circuit Breaker Removable Element, Rear View, with Lifting Beam ACB00/4000HR Air Circuit Breaker Stationary Drawout Cassette The circuit breaker is a device for interrupting, in air, a circuit between separable contacts under normal and abnormal conditions. It is supplied as a complete removable assembly including drawout, stationary frame and secondary control contacts in a three-pole construction. The main power circuit consists of butt type main and arcing contacts. The function of the main contacts is to carry full-rated current and short circuit current when the circuit breaker is closed. The arcing contacts transfer the current from the main contacts to the arc chutes when breaking currents. Each contact assembly is fastened to a common driveshaft via an insulated drive link. By rotating this driveshaft, the operating mechanism actuates the contacts of all poles simultaneously. These contacts are quick make and break, under all conditions. The circuit breaker is of the trip free design in any position of the closing stroke and may be tripped before the contacts touch. While an open operation exists, the moving contacts will return and remain in the open position even if a manual or electrical close operation is maintained. The closing mechanism will not reclose the circuit breaker after such tripping until the closing control circuit is opened and then reclosed. At the top of the circuit breaker, surrounding each contact structure, is the arc chute assembly. It is designed to extinguish the arc that is drawn when the contacts open. Each contact assembly is mounted on an insulated panel bolted to the back panel of the circuit breaker s removable element. The moving contact assembly is designed to make or break a main power circuit by moving onto or out from the fixed main contacts. Three current sensors are installed. Two current sensors are fixed to the stationary element and surround the lower outer main poles. The third current sensor is fixed to the stationary element and surrounds the top center main pole. These ring-type current transformers are designed to monitor the current and to signal the solid state overcurrent trip device to trip the circuit breaker whenever current exceeds its long time delay and short time pickup settings. Instantaneous overcurrent trip devices are attached to the two lower outer poles of the circuit breaker. These calibrated devices will trip the circuit breaker whenever the current exceeds the predetermined instantaneous setting. The operating mechanism transmits the closing force to the drive shaft. It is centrally located in the front of the circuit breaker. The ON/OFF indicator, located in the front of the circuit breaker, is fastened to the drive shaft above the operating mechanism. This device indicates whether the circuit breaker is open (OFF) or closed (ON). The trip knob located in the front of the operating mechanism provides a means for tripping the circuit breaker manually. Anti-rebound catches are provided to prevent reclosing of the contacts when the circuit breaker is tripped. These are mounted on the side plates of the breaker. They also function as shock catches preventing contacts of an open breaker from closing. The shunt trip circuitry, which acts through the magnetic trip device located on the left side of the operating mechanism assembly, provides the means for electrically tripping the circuit breaker from a remote location with out regard to load conditions in the circuit. Customer supplied 0 Vac Power (standard) is converted to 0 Vdc by a control panel for the magnetic trip device. The auxiliary switch, actuated by the opening and closing of the circuit breaker, is incorporated to open and close certain contacts in protective and control circuits. The auxiliary switch is linked to the driveshaft which is located above the operating mechanism. Circuit Breakers for Naval Shipboard Use PG0800E January 00