ACB l COMET AIR CIRCUIT BREAKER

ACB l COMET AIR CIRCUIT BREAKER

MASCHINENBAU HALBERSTADT GmbH, building on its 60 year legacy in power generation, introduces COMET Air Circuit Breaker designed to meet the standards and the requirements of its wide customer base. MBH ACB is the ideal solution to protect electrical equipment, isolate harmful discharges, and extend/improve the operation of industries worldwide.

INDEX COMET AIR CIRCUIT BREAKER 3 INTELLIGENT TRIP DEVICE 9 ACCESSORIES 21 CONTROL CIRCUIT & MECHANICAL INTERLOCK 27 STANDARD APPLICATIONS 33 DIMENSIONS 39 CATALOG NO. 43

COMET AIR CIRCUIT BREAKER

MBH ELECTRIC AIR CIRCUIT BREAKER LEGACY MBH Air Circuit Breaker is designed to meet and even surpass the standards and requirements for a wide range of applications: Buildings Offices Hotels Commercial Centers Hospitals Airports Data Centers Industries Chemical Plants Automotive Mining Factories Utilities and Infrastructure Electric Energy Generation and Distribution Oil and Gas Water 4

www.mbhelectric.de features ACB is a compact product that is optimized for package panel system: Enhanced reliability is ensured through modern structural design and excellent breaking capacity. Easy to maintain. Superior switching performance and excellent durability. Safety ACB sets the standard for safety, guaranteeing secure operations with its intelligent protection function, which incorporates a smart trip device that automatically kicks into action in the event of network problem. Furthermore, the RS 485 digitalized communication interface immediately displays on its LCD screen any tripping events such as instantaneous ground fault, low voltage trip, current unbalance and overheating. In the latter case, an overheat burn prevention is built-in in the form of a shunt coil. Highest Reliability The most important aspect of ACB is its unparalleled reliability, marking it as a superior product in the market. Enhanced reliability is ensured through a modern structural design that provides excellent sturdiness and breaking capacity. In addition, its high precision and reliable power supply source put forth a consistent performance that industries today depend on. Standardized Compact Size The ACB comes in a standardized compact size optimized for use in package panel system as well as enclosure installations. This versatility emphasizes the convenience of the ACB, setting it up as the easiest and most streamlined product available. Easy to Install and Maintain Featuring an impressively simplified design, the ACB is very easy to install and even easier to maintain. It offers reduced cost in both labor and time when carrying out both operations thanks to its convenient setup. Maintenance is further simplified by its digitalized communication interface, which provides high precision real time monitoring of current, load factor, bus bar temperature and line state, making sure any potential degradation is dealt with swiftly. 5

MBH ELECTRIC AIR CIRCUIT BREAKER Technical Description TYPE FRAME SIZE (AF) RATED CURRENT (In) (A) at 40Oc RATED VOLTAGE (Ue) (V) RATED INSULATION VOLTAGE (Ui) (V) RATED IMPULSE VOLTAGE (UiMP) (KV) FREQUENCY (HZ) NUMBER OF POLES (P) SET CURRENT (A) x In N-PHASE RATED CURRENT (%In) RATED BREAKING CURRENT (Icu) (KA) IEC60947-2 RATED SERVICE BREAKING CAPACITY (Ics) (%Icu) RATED CLOSING CURRENT (Icm) (KA) IEC60947-2 RATED SHIRT TIME CURRENT (Icw) KA/1s OPERATION TIME (ms) Breaking Time Closing Time 690V/600V/550V 500V/480V/460V 415V/380V/230V/220V 690V/600V/550V 500V/480V/460V 415V/380V/230V/220V Mechanical LIFE (No.) Electrical DIMENSION WxD (mm) Fixed Type H:310 Draw-Out Type H:432 3P 4P 3P 4P WEIGHT (Kg) Fixed Type Draw-Out Type 3P 4P 3P 4P 6

www.mbhelectric.de XLS10 XLS12 XLS16 XLS20 XLS25 XLS32 XLS40 1000 1250 1600 2000 2500 3200 4000 1000 1250 1600 1000 1250 1600 2000 2500 2500 3200 4000 690 690 1000 1000 12 12 50/60 50/60 3, 4 3, 4 0.5~1.0 0.5~1.0 100 100 50 50 65 65 65 85 65 65 85 75 75 105 105 143 143 143 176 143 143 176 50 50 50 40 40 70 70 10.000 10.000 10.000 10.000 314x330.5 365x330 373x322 456x330.5 456x330 489x322 380x425 380x425 410x425 473x425 473x425 525x425 41 42.4 42.4 44.5 48 59 65 53 55.1 55.1 57.8 61.6 76.7 82.7 65.4 68 68 69.8 75 90 98 83.9 87.8 87.8 92.3 95 117 125 7

INTELLIGENT TRIP DEVICE

MBH ELECTRIC AIR CIRCUIT BREAKER USR-2 USR-6 TYPE USR-2 USR-6 CURRENT RELAY Long & Short Delay, Instantaneous, Ground Fault Long & Short Delay, Instantaneous, Ground Fault, Zone Selective Interlocking ADDITIONAL RELAY - Leakage (external CT) MEASUREMENT FUNCTION - Current (R/S/T/N) PRE TRIP ALARM - Overload Protective Relay DO output (alarm) PTA Ground unavailable when PTA is used COMMUNICATIONS - Modbus / RS-485 POWER Self Powered Turns on when current reaches 20% of rated value Self Powered - Turns on when current reaches 20% of rated value - External power used during the communication AC/DC 110~220V DC 24~48V RTC TIMER Availabe Availabe TRIP DISPLAY LED Long time delay trip - Long time delay - Long/Short Instantaneous time delay - Ground default FAULT RECORD - 10ea display default (phase/current/date/time) EVENT RECORD - 10ea knob setting OPERATION BUTTON - Reset S/I-LTD (menu/move/enter) 10

www.mbhelectric.de USR-2 OCR A state-of-the-art, high-speed micro controller is used. The current value can be checked; it displays the load factor and the line status. Easy to identify the faults by displaying trip event. (Long-time delay, short-time delay, instantaneous delay, low-voltage, unbalanced current and overheating). LED Displays Trip Data and Overload Status. LED flicker indicates that current exceeds 1.13xIn. LED light remains turned on following the tripping of the breaker. 11

MBH ELECTRIC AIR CIRCUIT BREAKER USR-6 OCR Overload Protection: Long Time Delay Protection. Short-Circuit Protection: Short Time Delay & Instanteneous Delay Protection. Ground Fault Protection: ZSI (Zone Selective Interlocking). Function enables easier interlocking for protection. Advanced MCU: Basic measured current. High-precision measurement. Fault Recording Function: 10 cases of fault type, fault phase, fault value and corresponding time log. 4 Digital Outputs (DO). Communication Function: Modbus / RS485. LED Trip Data and Overload Status Indicator. LCD Indicator measurement and data of each phase. RESET KEY Reset after OCR relay operation and after Battery Check. MENU Initial screen, move between setting menus. PTA (Pre Trip Alarm): Overload Protective Relay DO Output. LTD (Long Time Delay): Long Time Delay Relay Operation indicator. STD/INST (Short Time Delay/Instant): Indicators Short Time & Instantaneous Delay Operation. GFT/ELT: Indicators Ground Fault Operation. Alarm: Overload warning alarm (Turns on when load current reaches 0.9xIn. Flickers when current reaches 1.05xIn). LTD Ir: Long Time Delay Current Setting. Tr: Long Time Delay Time Setting. S/I Isd: Short Time Delay Current Setting. Tsd: Short Time Delay Time Setting. li: Instantaneous Time Current Setting. ENTER Move to Lower Menu or Input Setting. MOVE CURSOR Move to Menu or Reset; Left/Right Move of screen cursor or setting. 12

www.mbhelectric.de RELAY CHARACTERIStics OPERATING CHARACTERISTICS LONG TIME DELAY PROTECTION CURRENT RELAY Tripping between 1.05 & 1.20xl Time delay(s) SHORT TIME DELAY PROTECTION Current Settings (A) Time delay(s) @10xlr INSTANTANEOUS DELAY PROTECTION Current Settings (A) Tripping time GROUND FAULT PROTECTION Gorund pick-up(a) Time delay(s) @10xln LEAKAGE PROTECTION (OPTION) Current Settings (A) Time delay(s) lu=lnx... lr=lnx... TR @ (1.5xlr) TR @ (6xlr) TR @ (7.2xlr) lsd=lrx... l2t off l2t on Tsd (max resettable time) Tsd(max break time) li=lrx... max. 50ms lg=lnx... l2t off l2t on Tg (max resettable time) Tg (max break time) lg Tg Long-Time, Short-Time & Instantaneous Delay Protection Ground Fault Protection 13

MBH ELECTRIC AIR CIRCUIT BREAKER RELAY CHARACTERIStics LONG TIME DELAY Overload protection. Time delay that is inversely proportional to the fault current. 1. Standard Current Setting Knob:lr 2. Delay Time Setting Knob: tr Operation Time at 6xIr. Setting Stages (9): 0.5-1-2-4-8-12-16-20-24-30 Off sec. 3. Relay Pick-up Current Pick-up relay current: Relayed at current of (1.15)xIr or higher. 4. Calculation based on the highest load current among R/S/T/N SHORT TIME DELAY Isd tsd Over-current protection. Time delay and definite time that is inversely proportional to the fault current. 1. Standard Current Setting Knob: lsd Setting Stage: (1.5-2-2.5-3-4-5-6-8-10-Off) lr. 2. Delay Time Setting Knob: Tsd Operation Time Standard: Operation Time at 10xIr. Inverse Time (lt On): 0.1-0.2-0.3-0.4/sec. Definite Time (lt On): 0.05-0.1-0.2-0.3-0.4/sec. 3. Calculation based on the highest load current among R/S/T/N. 4. ZSI (Zone Selective Interlocking) Instantaneous relay operation under protective interlocking when ZSI function is set. INSTANTANEOUS TIME DELAY Short circuit protection. When the fault current is above the preset value, it shall be dealt with within the shortest time possible to prevent accidents. 1. Standard Current Setting Knob: li Setting Range : (2-3-4-6-8-10-12-15-Off) lu. 2. Calculation based on the highest phase current. 3. Overall breaking time shall be below 50ms. 14

www.mbhelectric.de GROUND FAULT DELAY Ground Fault Protection. When the ground current is above the preset value tripping of the breaker will occur. 1. Standard Current Setting Knob: Ig Setting Range : (0.1-0.2-0.3-0.4-0.5-0.6-0.7-0.8-1.0-Off) ln. 2. Delay Time Setting Knob: tg Inverse Time (lt On): 0.1-0.2-0.3-0.4 sec. Definite Time (lt On): 0.05-0.1-0.2-0.3-0.4 sec. 3. Ground Current=Vector Sum of R-Phase+S-Phase+ T-Phase+N-Phase. 4. ZSI (Zone Selective Interlocking) Instantaneous relay operation under protective interlocking when ZSI function is set. 5. Ground Fault Protecting Function is included in the basic OCGR type (CT Type built-in). LEAKAGE PROTECTION OPTION Leakage Protection (Optional). When the leakage current is above the set value, it shall be broken after the time delay. 1. Standard Current Setting Knop: Ig Setting Range: 0.5-1-2-3-4-5-10-20-30-Off(A). 2. Leakage (GFT) Trip Time: 140-230-350-800ms. Alarm Time: 140-230-350-800-950ms. 3. External CT used and exclusive for ZCT. 4. Necessity of using external CT Internal CT Type (Basic Type): Ground Fault Protection Protect 20%~100% of the ACB rated current. In case of a large-capacity ACB, the ground fault operating current will also increase. For example, in case of 4000A ACB, the minimum ground fault relay current is 4000A x 20% = 800A. Installation of an external CT is recommended to control the ground sensitivity current, and it is optional to protect the ground fault (leakage). 15

MBH ELECTRIC AIR CIRCUIT BREAKER ZONE SELECTIVE INTERLocKING A Zone Selective Interlocking function is intended to protect the load equipments when a fault occurs. It minimizes the delay time and reduces damage to the air circuit breaker and load equipments. Following the operation of short-time delay or ground fault functions, in case of a fault, the concerned protective breaker sends ZSI signal after tripping to prevent upstream breakers from useless tripping. Hence the ZSI enforce continuity of service and reduce downtime of critical loads. In order to eliminate the fault condition, the ACB over-current relay performs an instantaneous trip to clear the fault. The upstream breaker, receiving the ZSI signal, shall refrain from tripping for a short preset time period under the Short-Time Delay or Ground Fault Time Delay functions. Upstream breakers that do not receive the ZSI signal shall trip instantaneously. For proper operation of ZSI, downstream breaker tripping time should be set lower than upstream breaker tripping time under Over-Current, Short Time Delay and Ground Fault Functions. In case of Fault-A: ACB1 independently performs the instantaneous trip. In case of Fault-B: ACB2 performs the instantaneous trip and ACB1 delays till the set time, then perform the instantaneous trip if the fault current is not cleared. 16

www.mbhelectric.de TRIP CHARACTERISTICS CURVE SHORT-TIME DELAY 17

MBH ELECTRIC AIR CIRCUIT BREAKER LONG-TIME DELAY 18

www.mbhelectric.de INSTANTANEOUS TIME DELAY, GROUND-FAULT t(s) PRE TRIP ALARM (PTA) t(s) *ln *ln 19

ACCESSORIES

MBH ELECTRIC AIR CIRCUIT BREAKER SHUNT TRIP (MX) RATED VOLTAGE (Vn) OPERATING VOLTAGE RANGE (V) POWER CONSUMPTION(VA/W) TRIP TIME(ms) DC(V) AC(V) INRUSH STEADY-STATE 24~30-0.75~1.1Vn 48~60 48 0.75~1.1Vn 100~130 100~130 0.75~1.1Vn 200 5 50 200~250 200~250 0.75~1.1Vn - 380~480 0.75~1.1Vn * THE AVAILABLE VOLTAGE RANGE IS THE MINIMUM RATING RANGE OF EACH RATED VOLTAGE (VN) WIRE SPECIFICATIONS WIRE TYPE DC 24~30(V) DC/AC 48(V) #16AWG(1.31) #18AWG(0.823) #16AWG(1.31) #18AWG(0.823) OPERATING VOLTAGE 80m 45m 330m 200m 45m 27m 210m 120m Power consumption 200VA, On a new line: Rated Voltage Vn DC 24 ~30V, DC/AC 48V. Recommended maximum wire length. CLOSING COIL (XF) RATED VOLTAGE (Vn) OPERATING VOLTAGE RANGE (V) POWER CONSUMPTION (VA/W) TRIP TIME (ms) DC(V) AC(V) PICK UP DROP OUT INRUSH STEADY-STATE 24~30-48~60 48 100~130 100~130 0.65~0.85Vn 0.4~0.6Vn 200 5 50 or under 200~250 200~250-380~480 * THE AVAILABLE VOLTAGE RANGE IS THE MINIMUM RATING RANGE OF EACH RATED VOLTAGE (VN) WIRE SPECIFICATION WIRE TYPE DC 24~30(V) DC/AC 48(V) #16AWG(1.31) #18AWG(0.823) #16AWG(1.31) #18AWG(0.823) OPERATING VOLTAGE 30.5m 18m 155m 95m 25m 15m 135m 80m Power consumption 200VA, On a new line: Rated Voltage Vn DC 24 ~30V, DC/AC 48V. Recommended maximum wire length. 22

www.mbhelectric.de GEAR (MCH) INPUT POWER DC 24~30V AC/DC 48~60V AC/DC 100~130V AC/DC 200~250V AC/DC 380~480V MOTOR LOAD CURRENT MOTOR ROTATION (RPM) INSULATED WITHSTAND VOLTAGE START LOAD CURRENT (max.) INSULATED WITHSTAND VOLTAGE 5A3A1A0.5A0.3A 16.000~79.000rpm 2kV/min Less than 5 times of the load current 2kV/min OPERATING TEMPERATURE RANGE -20 / -60 DURABILITY CHARGE TIME CHARGE END CONTACT Operating Voltage Range: Voltage 85%~110%. 20.000 cycles (Load Continuous Operating Times: 2times/min) 5 sec or more 15A at 250V AC UNDER VOLTAGE TRIP DEVICE (MN) RATED VOLTAGE (Vn) OPERATING VOLTAGE RANGE (V) POWER CONSUMPTION (VA/W) DELAY TIME (ms) DC(V) AC(V) PICK UP DROP OUT INRUSH STEADY-STATE 48~60 48 100~130 100~130 0.65~0.85Vn 0.4~0.6Vn 200 5 1, 2, 3 200~250 200~250 FAULT TRIP INDICATION CONTACT (SDE) SDE-2 SDE-6 TYPE RESISTANCE LOAD INDUCTIVE LOAD RESISTANCE LOAD INDUCTIVE LOAD 250V 10A 6A 10A 10A CONTACT CAPACITY NO. OF AVAILABLE CONTACTS AC DC 125V 10A 6A 10A 10A 250V 0.3A 0.3A 3A 1.5A 125V 0.5A 0.6A 10A 6A 125V 0.5A 0.6A 10A 6A Standard OFF - Charge Type, 4a4b AL activates only following an OCR tripping action. The control signal is sent containing fault information. In case of a manual reset-reclosing operation is done after the AL (Alarm) switch is reset. In case of an automatic reset, the AL switch resets after operation of the remote reset device. 23

MBH ELECTRIC AIR CIRCUIT BREAKER Manual Reset Button Manual Reset Button (MRB), used to reset the CB allows re-closing following an OCR tripping operation. Operation Counter (CDM) A device used to indicate the number of operations the CB performed. ON / OFF Indication Contact (OF) 4 auxiliary contacts are used to monitor the CB ON/OFF status. Key Lock A lock device used to prevent unauthorized operation of certain CB, when using more than 2 CBs. Lifting Hook A safety device used to easily move CB. Used by attaching the hook to both handles of arc cover. 24

www.mbhelectric.de Drawout Device (Cradle Mounting Bracket) Mechanical mounting of CB body on the Cradle. Chassis Locking (Pad Lock / Position Lock) ACB is operated in position (CONNECTED, TEST, DISCONNECTED) when drawn-in/out. When the ACB body is drawn-in/out within the cradle, the handle will be locked at an idle status. LOCK is operated when the draw-in button is popped out. LOCK is cancelled by pressing the draw-in button in order to continue the draw-in/out operation. Relay Test Equipment A device to test whether OCR trip relay operates normally without power. Capable to withstand up to 17times the rated current. Input each current, value, size and phase of R/S/T/N. Different line frequencies can be tested. Testing long-time delay, short-time delay, instantaneous, ground fault protection functions. Attached to the door frame. Transparent cover. Mounted on the distribution panel to cover the breaker in order to prevent exposure to dust. Temperature Sensor Send alarm signal via RS-485 if temperature rises above the set operating temperature. Interphase Barrier Ensures phase-phase clearance. 25

CONTROL CIRCUIT & MECHANICAL INTERLOCK

MBH ELECTRIC AIR CIRCUIT BREAKER ELECTRICAL DIAGRAM Auxiliary MN MCH XF OF S/W 28

www.mbhelectric.de mechanical interlock Switches can be interlocked by using proper mechanical interlocks between the ACBs. Horizontal Type Used for a cable-type mechanical interlocking between 2 draw-out type circuit breakers. The maximum distance between interlocking circuit breakers is 2000mm. Vertical Type Vertical interlock is normally applied using a mechanical connecting nod to the draw-out type circuit breaker and it is used for the mechanical interlocking between 2 circuit breakers. CAUTION: User should refer to manual prior to installing mechanical interlock. SPACE SPACE 29

MBH ELECTRIC AIR CIRCUIT BREAKER 1 9 10 5 2 3 11 4 Fixed Type (2000A) 1 2 3 4 5 6 7 8 9 10 11 Control Terminal Charge Handle Rating Plate Charge/Discharge Display ON / OFF Display Draw-in/out Handle, Insertion Point Draw-in/out Display Dram-in/out Handle Protection Relay OFF Button ON Button 8 7 6 1 2 3 4 5 Internal Structure 1 Closing Coil 2 Trip Coil 3 Auxiliary Switch 4 Arc Extinguishing Chamber 5 Main Body of CB 19 6 Charging Handle 6 18 17 7 8 Mechanism Shaft Closing Spring 9 Draw-out Mechanism 7 16 10 11 12 Draw-out Cam Moving Contactor Fixed Contactor 8 15 14 13 14 15 Load Side Conductor Draw-Out Conductor Circuit Breaker Connection Conductor 16 Power Supply Side Conductor 9 17 Safety Shutter 18 Insulation Mold Body 10 11 12 13 19 Arc Runner 30

www.mbhelectric.de CONNECTED TEST DRAW-OUT It is a state where ACB body, main circuit and control circuit are all disconnected. ACB is completely disconnected from cradle. Check whether DISCONNECTED is displayed in the draw-out position display. CONNECTED TEST DRAW-OUT It displays the disconnection state of main circuit, ACB body and the connection state of control circuit. A switching test, Inspection and changing set value of the trip current of the protection relay are possible. Turn draw-out lever till the Test Point. CONNECTED TEST DRAW-OUT It displays the normal connection state of panel board circuit and ACB body. Check whether CONNECTED is displayed in the draw-out position display. 31

STANDARD APPLICATIONS

MBH ELECTRIC AIR CIRCUIT BREAKER OPERATING CONDITIONS Temperature Range Use within the range of max. +40 C and min. -5 C. The average 24-hour temperature should not exceed +35 C. Altitude 2000m or below. Environmental Condition Relative humidity should be lower than 85% at 20 C. Relative humidity should never exceed 90%. Avoid storage in the presence of oil gas, ammonia gas and corrosive gas. Storage Temperature Store it at max. +60 C and min. -20 C. The average 24-hour temperature should not exceed +35 C. Special Operational Environment If the ACB is installed in a high temperature and humid environment, electrical insulation and mechanical performance will be degraded. In this case, it is recommended to increase anti-corrosion resistance. Derating should be considered if ambient temperature exceeds 40 degrees. If the ACB is installed at altitudes above 2000m, heat emission, voltage, conduction capacity and breaking capacity will be reduced. Insulation level will decrease depending on air pressure. C CAUTION: Please consult our representatives for operations outside the specified ambient conditions. 34

www.mbhelectric.de STANDARD PROTECTION FOR ELECTRICAL NETWORKS Standard use of ACB MBH XLS ACBs are used in a wide range of industrial applications to protect equipment, conductors and devices in low voltage distribution networks. Short Circuit Breaking Capacity Nominal, overloads and short circuit currents must be determined in order to properly select and setup the ACB. The MBH XLS ACB must be properly sized to interrupt the maximum short circuit current as well as the lowest or weakest short circuit current at its point of installation. Protective Features The MBH XLS is equipped with a number of protection functions: Overload Protection Function: This feature allows the user the possibility of accurately adjusting the nominal current setting within the range of 0.5xIe. This feature also enables overload setting Ir. Time Short-Circuit Protection Function: The user must take into consideration the inrush currents, weak short circuit currents and fault current while setting of the Time Short Circuit Protection Function.The MBH XLS is designed to interrupt the faulted current within the required time frame while offering the needed selectivity across multiple levels and avoiding unwanted tripping on normal inrush currents. Instantaneous Short Circuit Protection: This feature enables instantaneous tripping action against high short circuit currents. The user usually sets the tripping current as a multiple of the primary overload adjustment. Ground Fault Protection Function: This feature grants the user the possibility of protection against ground fault currents thus protecting against damages to equipment and personnel. Generator Protection The protection device needs to be adjusted adequately in order to ensure quick and proper response against excessive generator overloading and short circuit conditions. Recommended timed short-circuit setting is 2.5xIr. 35

MBH ELECTRIC AIR CIRCUIT BREAKER Motor Protection The user should setup the ACB protective features such as to avoid tripping starting motor current. The following settings for timed short circuit device of a power circuit breaker are recommended: 12xIr with 50ms delay. 12xIe if instantaneous. The overload protection should incorporate a re-energization delay function in order to allow cooling of conductors and motors following an overload period. The user should consider including additional protective functions against motor operational anomalies such as phase loss detection and blocked rotor. Transformer Protection Transformers generally draw high inrush current upon energization. The peak inrush current, during the first half cycle, can reach values up to 15 to 25 times the normal transformer rated current. Protective devices should discriminate between inrush currents and short circuit currents and should not trip during energization. The following settings are recommended for transformer protection: 8xIr delayed 30ms. 15xIe~20xIe instantaneous. IEC 60947-4 TRIP CLASSES Trip Class 1.2xln 1.5xln 7.2xln 10A t<2hours t<2min 2 t<10 10 t<2hours t<4min 4 t<10 20 t<2hours t<8min 6 t<20 30 t<2hours t<12min 9 t<30 36

www.mbhelectric.de APPLICATION GUIDE Clearance Distances MBH ACB is tailored to break high short circuit current levels in a very short time frame. Breaking such current leads to emission of gas and some debris of conductive fragments. MIN. CLEARANCE FIXED ACB TO HOUSING Metal part Insulated part A 160 160 B1 30 30 B2 30 30 MIN. CLEARANCE DRAWOUT ACB TO HOUSING Metal part Insulated part A 0 0 B1 30 30 B2 30 30 BUSBAR SIZING Breaker Type CURRENT RATING RECOMMENDED COPPER BUSBAR XLS10 1000A 2x60x5 / 1x60x10 XLS12 1250A 2x40x10 / 2x80x5 XLS16 1600A 2x50x10 / 2x100x5 XLS20 2000A 3x50x10 / 3x100x5 XLS25 2500A 4x50x10 / 4x100x5 XLS25 2500A 4x100x10 XLS25 2500A 4x100x10 37

DIMENSIONS

MBH ELECTRIC AIR CIRCUIT BREAKER Fixed Type (2000A) Rated Current T(mm) W(mm) 1200A OR BELOW 10 50 1600A 15 60 2000A 20 60 Draw-Out Type (2000A) Rated Current T(mm) W(mm) 1600A OR BELOW 15 60 2000A 20 60 40

www.mbhelectric.de Fixed Type (2500~3200A) Rated Current T(mm) W(mm) 2500A 20 85 3200A 25 85 Draw-Out Type (2500~3200A) Rated Current T(mm) W(mm) 2500A 20 100 3200A 25 100 41

MBH ELECTRIC AIR CIRCUIT BREAKER Fixed Type (4000A) Rated Current T(mm) W(mm) 4000A 30 100 Draw-Out Type (4000A) Rated Current T(mm) W(mm) 4000A 30 100 42

www.mbhelectric.de catalog no. XLS F1 06 3 D M AC2 1 mn Series XLF Air Circuit Breaker F1 F2 F3 Frames 1000A ~ 1250A 1600A ~ 3200A 2500A ~ 4000A Rated Current 10 12 16 20 25 32 40 1000A 1250A 1600A 2000A 2500A 3200A 4000A No. of Poles 3 3poles 4 4poles Installation Mode F Fixed Type D Draw-Out Type Operation M Motorized H Manual 0 1 2 Over Current Trip Isolating Switch USR-2 USR-6 Normal LCD MN MX OF Option Under Voltage Trip Shunt Trip USR External Contact Auxiliary Voltage DC DC 110V AC AC 110V AC2 AC 220V Accessories Voltage *** *** To specify Accessories Voltage. 43

MBH Middle East & Africa Halat, Lebanon T. +961 9 444 888 middleeast@mbhelectric.de MBH Gulf Baniyas Complex Nasser Square Al Rigga Area Deira, Dubai, UAE T. +971 4 239 5954, F. +971 4 239 5944 dubai@mbhelectric.de MBH Headquarters MASCHINENBAU HALBERSTADT GmbH Rudolf Diesel-Strasse 50 Halberstadt 38820 Germany T. +49 1577 3394 113, F. +49 3941 24036 info@mbhelectric.de www.mbhelectric.de 2012 Maschinenbau Halberstadt GmbH All rights reserved. Reproduction in whole or in part is prohibited without the prior written consent of the copyright owner. The information presented in this document does not form part of any quotation or contract, is believed to be accurate and reliable and may be changed without notice. No liability will be accepted by the publisher for any consequence of its use. Publication thereof does not convey nor imply any license under patent- or other industrial or intellectual property rights.