GE Consumer & Industrial. M-PACT New. Air Circuit Breaker A

Transcription

1 GE onsumer & Industrial M-PT New ir ircuit reaker

2 M-PT Technical overview M-PT ir ircuit reaker

3 ir circuit breakers Technical overview.4 Fixed ircuit reaker.6 Withdrawable ircuit reaker.7 haracteristics.9 State of the rt Electronic Trip Units. Time urrent urves.9 M-PT ccessories Technical overview Order codes Wiring diagrams Dimensional drawings.2

4 M-PT Notes Technical overview.3

5 Fixed ircuit reaker Rated from 400 to 4000 the M-PT circuit breaker has been designed to meet the most stringent demands in fault detection and safe interruption thereof. vailable in 2 frame sizes: - frame size ranging from 400 to frame size 2 ranging from 800 to 4000 The range has been developed to be aesthetically and technically co-ordinated with other protective devices within the GE Power ontrols industrial product ranges. The breaker range has a common height and depth and is available in both fixed pattern and drawout versions which can be manually or electrically operated. Designed to offer multiple mains connection options it also comes with a wide range of easy-to-install accessories. Specification M-PT air circuit breakers comply with the following specifications for Low Voltage Switchgear: IE IE IE Utilisation category pprovals KEM certification in accordance with IE certification in accordance with G S certification in accordance with hina ertification of shipping 3 performance ranges* -50 k (Icu) D -65 k (Icu) H, H2-80 k (Icu) *Ratings shown at 45V 2 compact frame sizes Frame size to 2500 Frame size to 4000 Fixed pattern and withdrawable versions 3 or 4 pole configuration Front and rear access connections (horizontal/vertical) Devices provided with or without protection relay Manual or electrical operation ommon height and depth dimensions uilt-in safety features e.g. safety shutters Wide range of protection settings offering full selectivity ombinations of earth fault protection Easy-to-install accessories, common to entire range Simple and efficient servicing on site D H,H2.4

6 M-PT Technical overview Fixed circuit breaker ll M-PT fixed pattern air circuit breakers incorporate a stored energy mechanism. The spring can be charged either manually or electrically via a motor operator that is automatically activated after the closing operation. IP43 front panel and door escutcheon seals are standard features with IP20 protected secondary isolating contacts. For enhanced protection, an optional IP54 door panel is also available. Power Supply ll stated short circuit ratings are certified with incoming supply connection made to either upper or lower terminals Trip-free operating mechanism Positive 'ON/OFF' contact indication Mechanical/electrical anti-pumping device harging spring status indication (optional) Ergonomic manual spring charging handle Field-mountable range of accessories uxiliary switches 5 NO and 3 N, 250V (standard) Mechanical Trip larm switch (NO) (optional) Padlockable push-button cover Mechanical cable interlocking (optional) Termination: rear, horizontal or front access (optional) Electrical clearances according to IE Front access of secondary terminals for simple connection. Motorised spring charging unit (optional) 2. M-PRO Protection Relay (optional) 3. Secondary contacts 4. Shunt trip (optional) 5. losing coil (optional) 6. Undervoltage release (optional) 7. Manual charging handle 8. ON/OFF push-buttons 9. Push-button padlockable covers. Positive contact indication. harging spring status indication 2. Mounting plate Installation Fixed pattern M-PT can be fastened into any suitable switchboard or cubicle arrangement using four M8 bolts. learance is only required above the unit for the removal and inspection of the arc chutes (see dimensional drawings for mounting details and recommended clearance distances). n earthing point is provided on either side of the circuit breaker..5

7 Withdrawable circuit breaker Pre-mounted into a self-contained 'cassette', this versatile circuit breaker can be inserted or withdrawn via sliding rails using a racking drive mechanism controlled by a racking handle. It provides three set positions: Disconnected / Test / onnected. ny attempt to withdraw the unit whilst in service will automatically trip the breaker, either by the racking position safety mechanism or by the insertion of the racking handle. It can be racked to the dis-connected position with the cubicle door closed or open. Power Supply ll stated short circuit ratings are certified with incoming supply connection made to either upper or lower terminals. 4 Withdrawable circuit breaker 5 4 Insulated, earthed steel shutters to isolate the main contact zone Front access padlocking for safety shutters Secure padlocking in the "Disconnect" position learly visible operational position indication arriage position switch (optional) Termination: Flat copper palms (standard) with captive M fixing nuts 'T' terminal adaptors for horizontal/vertical connection (optional) Front access connections (optional) utomatic disconnect of secondary circuits Lifting lugs for ease of removing the circuit breaker from the cassette Front access of secondary terminals for simpleconnection assette side mounting fixing parts (optional) Installation ircuit breakers are delivered pre-mounted in the cassette (standard) Versatile fixing arrangements allow mounting onto any switchboard or cubicle using four M8 bolts (see dimensional drawings for mounting details and recommended clearance distances) Earthing point situated on the right hand side of cassette (front view). arriage position switch (optional) 2. Extension rail 3. Earthed steel safety shutter 4. Secondary terminals 5. 2 way cable interlock mechanism (optional) 6. Racking handle (storage) 7. Padlocking for safety shutters 8. Insertion hole for racking handle 9. Padlocking in the DISONNETED position. Operational position indication. Key interlock (optional).6

8 M-PT haracteristics Technical overview Performance Data haracteristic Symbol Units Rated current (40 ) Endurance (number of operating cycles) Mechanical (with maintenance) Mechanical (without maintenance) Electrical (at rated current) Rated service voltage (50/60 Hz) Ue V Rated insulation voltage (50/60 Hz) Ui V Rated impulse withstand voltage Uimp V Number of poles 3 & 4 3 & 4 3 & 4 3 & 4 Rating of 4th pole 0% 0% 0% 0% type D D H H2 D H H2 D H H2 Frame size Rated ultimate short-circuit Icu k (rms) 220V breaking capacity 45V V V V Rated service short-circuit Ics k (rms) 220V breaking capacity 45V V V V Rated short time withstand current second Icw k (rms) seconds Icw k (rms) Rated short-circuit making capacity Icm k (peak) 45V V V V Power dissipation at In (Fixed breaker) Watts Power dissipation at In (Withdrawable) Watts Design and specifications are subject to changes without notice. Selectivity The following table shows the conditions to satisfy full selectivity between UP-STREM and DOWN-STREM devices. Up-stream: M-PT Down-stream: M-PT ST delay 50 ms minimum between up-stream and downstream Multiplication coefficient between LTratings,56 Up-stream Down-stream Full Full Full Full Full Full Full Full Full Full Full Full Full Full Full Full Full Full Full Full Full Full Full Full Full Full Full Full 2000 Full - - Temperature Deratings Free ir () The M-PT s may operate at higher ambient temperatures than 40 o in certain installation conditions. In this case the current rating in mperes should be reduced as indicated below. mblent urrent Rating () Temperature The figures specified apply to withdrawable 's with flat face vertical copper connections () Protection degree IP00.For use in enclosures with interior temperatures of 40 to 70 the relevant IP values can be applied..7

9 & 4 3 & 4 3 & 4 3 & 4 3 & 4 0% 0% 0% 0% 0% D H H2 D H H2 D H H2 D H H2 D H H haracteristics atalog NO.onfiguration MP 3 F 6 Ratings: , , , , Installation: F-fixed W-withdrawable Type: -Frame 2-Frame2 Pole: 3-3P 4-4P* reaking apacity:, D, H, H 2 M-PT * Letter 'L' & 'R' only for type selection, not shown on nameplate. Recommended Minimum opper Size In accordance with IE Rating () opper / phase x 50 x x 50 x x 60 x x 0 x x 0 x x 0 x x 0 x x 0 x x 0 x + x 0 x 5 Dimensions in mm Frame Rating Size () Poles Type Height () Width Depth (2) 400 to Withdrawable Fixed Withdrawable Fixed to Withdrawable Fixed Withdrawable Fixed () Height is from mounting surface to highest part of the. (2) Depth is from the cubicle door to the back of terminals. * 4P,Neutral on the left or right Please specified on sdection form,the defaule option is Neutral on night. Weights (kg) range D range H range Fixed pattern Frame 3 Pole 4 Pole 3 Pole 4 Pole 3 Pole 4 Pole 400 to / / 2000 to / / 800 to Withdrawable Frame 3 Pole 4 Pole 3 Pole 4 Pole 3 Pole 4 Pole 400 to / / 2000 to / / 800 to

10 M-PT State of the rt Electronic Trip Units Technical overview Plug'n Play Electronic trip units are normally supplied factory fitted. However spares are available that can be simply plugged in to breakers installed in the field. Each trip unit then needs to be adjusted to the required settings. If the installation is not powered up the installed battery pack or the seperately available test kit with Power Pack can be used as alternate power source. line offering a new range of electronic trip units designed to extend and/or upgrade the functionality offered by the existing M-PT Plus air circuit breaker. Two types are available. The simple and effective MPRO-27 and the MPRO-50 offering extended functionality. Each has a LD screen with ammeter and a menu driven setting interface, allowing a simple and accurate setting of all parameters. This global line of electronic trip units uses the most recent technology to offer each user an unique combination of selectivity speed and functionality. MPRO-27 & MPRO-50 The basic MPRO-27 type has been designed to replace the existing MPRO- 7 and MPRO-8 plus units offering an extended functionality and a standard ammeter. The MPRO-50 type replaces the existing MPRO-30 and MPRO-40 designs covering an extended functionality with protection devices as fuse links, overload protection and reduced instantaneous (RELT). Each MPRO-50 comes with a simple to connect 4 wire modbus communciation option. Main djustment Options.9 LT-LTD protection Each device has an overload setting range of 0.4 to a times In and offer a choice of 22 time bands designed for use with circuit breakers. second set of 22 time bands shaped to match the time current curves of fuses is available on the MPRO-50 type. ST-STD protection timed delayed short circuit protection is installed with a current setting of 2 to 2 times the set LT current value. The short circuit protection time can be set, at one of 7 bands ranging from 90 milliseconds to second. Optionaly this device can be set to one of three I 2 t curves. I-protection switchable and selective instantaneous protection with a setting range of 2 to 5 times the breaker rating that is programmed to wait one half cycle until the downstream device has reacted. Other protection features host of other protection devices is availble including Ground Fault sum and Ground Fault source return (allowing UEF, SEF & REF) and a reduced instantaneous device. The reduced instanataneous device allows the user to conditionally programme the breaker to trip faster and at lower short circuit settings than it would on the standard instantaneuos device. This RELT device allows the user to reduce the short circuit current level and its time span, thus reducing the amount of electrical energy in the direct vicinity of the breaker.

11 Trip Unit MPRO-27 MPRO-50 Setting Interface LD screen allowing access to 4 distinct menu's X X Touch pad adjustments X X Multilingual X X djustable manual or automatic RESET option X X Long Time or Overload urrent Protection 3 current settings Ir, 0.95, ,85, 0.8, 0.75, 0.7, 0.65, 0.6, 0.55, 0.5, 0.45 & 0.4 x breaker rating In X X 22 thermal protection ( type) time bands available ranging from class 0.5 to 40 (bands at 7.2 x Ir) X X 22 I 2 t protection (F type {fuse} ) time bands available - X Neutral protection 0-50%-63%-0% X X Possibility to switch OFF - X ooling function and thermal memory X X Short Time Short-ircuit urrent Protection Setting range from.5 to 2 x Ir (LT setting) X X Steps of 0.5 (a total of 22 settings) X X Possibility to switch OFF - X 7 time delay settings (STD) ranging from 30 to 940 milliseconds delay setting result in a 90 to 00 milliseconds X X learance times to IE and IE I 2 t Protection time bands available Instantaneous Short-ircuit urrent Standard Ii setting range from 2 to 5 x breaker rating In X X Steps of 0.5 (a total of 28 settings) X X Possibility to switch OFF X X Selective execution X X Fixed instantaneous or HSIO protection X X Reduced Ii setting range from.5 to 5 x Ie (primary setting) - X Steps of 0.5 (a total of 29 settings) - X Possibility to switch OFF - X Remote and local ON and OFF with position indication signal - X Ground or Earth Fault Protection Setting range from 0. to x In (breaker rating) () () () Steps of 0.0 (a total of 92 settings) Possibility to switch OFF 4 time delay settings (GFD) ranging from 50 to 840 milliseconds delay setting resulting in a to 900 milliseconds learance times to IE and IE I 2 t protection time bands available I 4 t protection time bands available Residual principle (UEF application possible) Source ground return principle - UEF, REF and SEF applications possible - ombinations of UEF, REF and SEF applications possible - Other Functions urrent measurement (L, L2, L3, N) X X Trip target (trip reason indication) X X Trip info (magnitude / phase) X X Trip counter X X Event logger (trip events) X X General inputs (4 availble) - X General relay outputs (4 available) - X Relay based on current level (load shedding) - X Good & bad health indicator - X Watchdog - X ommunication 2 way - X Modbus - X 24V D auxiliary power supply X X Test kit with power support function State of the rt Electronic Trip Units () 24V auxiliary power supply is required. Key X = Present = Optional - = Not possible.

12 M-PT Time urrent urves Example of Full Time urrent urve Time urrent urve The MPRO Electronic trip unit has many sophisticated setting features and an extremely broad setting range. On request we can provide complete Technical overview Time urrent urves covering all installed protection devices. The curves can be produced for any current setting within the range of the installed protection devices, for one or for a combination of two breakers. Please contact your local GE Sales Office for more information h 00 0 MPRO Electr onic Trip Unit LT and Time urrent urve reaker In= LT - Protection device Set at Ie= 2400 Ir at 0,9 =260 and - ST - Protection device Set at 6x Ir of 260 Ist=2960 and STD I - Protection device Set at 2 x Ie of 2400 Ii = GF - Protection device Set at 0,6 x Ie of 2500 (Ig = 500) and GFD 6 I²t ON & OFF GF and ST and 0, I and Tripping Time in Seconds (s) 0,0 0,00 Green & Light lue Line = Full learing time Red Line & Dark lue Line = Non Tripping time HSIO and x urrent in mps (Strom in mpere) 7,2 x.

13 Time urrent urves (cold state) LT Protection Device 000 2h 00 0 MPRO 27 & 50 Electronic Trip Unit LT set at reaker Rating In Setting Range Ie= 0.975, , 0.95, 0.45 or 0.4 x In Ir= 0.5 to x Ie in steps of 0.25 Total Setting Range 0,2 - x In - Time urrent urve LT-Protection Device - and and - - and -6 - and -22 ST protection - OFF I protection set to 5 x Ie () 000 2h 00 0 MPRO 27 & 50 Electronic Trip Unit LT set at reaker Rating In Setting Range Ie= 0.975, , 0.95, 0.45 or 0.4 x In Ir= 0.5 to x Ie in steps of 0.25 Total Setting Range 0,2 - x In - Time urrent urve LT-Protection Device - and and and -2 - and -7 ST protection - OFF I protection set to 5 x Ie () Time urrent urves Tripping Time In Seconds (s) 0,,00,00 0,00 x reaker Rating In 7,2x Tripping Time In Seconds (s) 0,,00 x reaker Rating In 7,2x,00 0, h MPRO 27 & 50 Electronic Trip Unit LT set at reaker Rating In Setting Range Ie= 0.975, , 0.95, 0.45 or 0.4 x In Ir= 0.5 to x Ie in steps of 0.25 Total Setting Range 0,2 - x In - Time urrent urve LT-Protection Device - and and and -3 - and h MPRO 27 & 50 Electronic Trip Unit LT set at reaker Rating In Setting Range Ie= 0.975, , 0.95, 0.45 or 0.4 x In Ir= 0.5 to x Ie in steps of 0.25 Total Setting Range 0,2 - x In - Time urrent urve LT-Protection Device - and and and -4 - and ST protection - OFF I protection set to 5 x Ie () ST protection - OFF I protection set to 5 x Ie () Tripping Time In Seconds (s) 0,,00,00 0,00 x reaker Rating In 7,2x Tripping Time In Seconds (s) 0,,00 x reaker Rating In 7,2x,00 0,00.2

14 M-PT Time urrent urves (cold state) LT & STD Protection Device Technical overview 000 2h 00 0 MPRO 27 & 50 Electronic Trip Unit LT set at reaker Rating In Setting Range Ie= 0.975, , 0.95, 0.45 or 0.4 x In Ir= 0.5 to x Ie in steps of 0.25 Total Setting Range 0,2 - x In MPRO 27 & 50 Electronic Trip Unit Time urrent urve LT set at reaker Rating In 2h - Time urrent urve Setting Range LT-Protection Device Ie= 0.975, , 0.95, 0.45 or 0.4 x In LT-Protection Device - and -05 Ir= 0.5 to x Ie in steps of and -0 - and - Total Setting Range 0,2 - x In - and -8 - and -5 - and ST protection - OFF I protection set to 5 x Ie () 0 ST protection - OFF I protection set to 5 x Ie () Tripping Time In Seconds (s) 0,,00 x reaker Rating In Tripping Time In Seconds (s) 0,,00 0,00,00,00 0,00 7,2x x reaker Rating In 7,2x MPRO 27 & 50 Electronic Trip Unit - Time urrent urve - ST-Protection Device I 2 t - OFF- ST set on breaker rating In Setting Range,5 to 2 x Ir in steps of 0,5 - and STD 0 - and STD 03 - and STD 05 - and STD 07 - and STD 09 - and STD - and STD 3 - and STD 5 - and STD ,8 5 0,8 0,6 0, ,6 0,4 0, , MPRO 27 & 50 Electronic Trip Unit - Time urrent urve ST-Protection Device I 2 t - OFF- ST set on breaker rating In Setting Range,5 to 2 x Ir in steps of 0, and STD 02 - and STD 04 - and STD 06 - and STD 08 - and STD 9 - and STD 2 - and STD 4 - and STD , 0, Green Line = Full learing Time Red Line = Non Tripping Time Green Line = Full learing Time Red Line = Non Tripping Time.3 Tripping Time In Seconds (s) 0,0 0,0 I protection set to 5 x Ie () Tripping Time In Seconds (s) I protection set to 5 x Ie () 0,00 0,00,00,00 0,00,00,00 0,00 x reaker Rating In x reaker Rating In

15 Time urrent urves (cold state) ST Protection Device Tripping Time In Seconds (s) 0,8 0,6 0,4 0,2 0, 00, 0,0, MPRO 27 & 50 Electronic Trip Unit - Time urrent urve ST- Protection Device ST set at reaker Rating In Setting Range,5 to 2 Ir in steps of 0,5 x reaker rating In I 2 t ON Iow - and STD 0 - and STD 03 - and STD 05 - and STD 07 - and STD 09 - and STD - and STD 3 - and STD 5 - and STD 7 Green Iine = Full learing time Red Line = Non Tripping time I protection set to 5 Ie (),00 0,00 Tripping Time In Seconds (s) 0,2 0, 00, 0,0,00 MPRO 27 & 50 Electronic Trip Unit - Time urrent urve ST- Protection Device 6 6 0,8 0, , ST set at reaker Rating In Setting Range,5 to 2 Ir in steps of 0,5 x reaker rating In I 2 t ON Iow - and STD 02 - and STD 04 - and STD 06 - and STD 08 - and STD - and STD 2 - and STD 4 - and STD 6 Green Iine = Full learing time Red Line = Non Tripping time I protection set to 5 Ie (),00 0,00 Time urrent urves 0,8 0,6 0,4 0,2 0, MPRO 27 & 50 Electronic Trip Unit - Time urrent urve ST- Protection Device ST set at reaker Rating In Setting Range,5 to 2 Ir in steps of 0, I 2 t ON med - and STD 0 - and STD 03 - and STD 05 - and STD 07 - and STD 09 - and STD - and STD 3 - and STD 5 - and STD 7 0,8 0,6 0,4 0,2 0, MPRO 27 & 50 Electronic Trip Unit - Time urrent urve ST- Protection Device ST set at reaker Rating In Setting Range,5 to 2 Ir in steps of 0, I 2 t ON med - and STD 02 - and STD 04 - and STD 06 - and STD 08 - and STD - and STD 2 - and STD 4 - and STD Green Iine = Full learing time Red Line = Non Tripping time 2 Green Iine = Full learing time Red Line = Non Tripping time Tripping Time In Seconds (s) 00, 0,0 I protection set to 5 Ie () Tripping Time In Seconds (s) 00, 0,0 I protection set to 5 Ie (),00 x reaker rating In,00 0,00,00 x reaker rating In,00 0,00.4

16 M-PT Time urrent urves (cold state) ST, I and Hi Protection Device Technical overview 0,8 0,6 0,4 0,2 0, MPRO 27 & 50 Electronic Trip Unit ST set at reaker Rating In Setting Range,5 to 2 Ir in steps of 0, Time urrent urve ST- Protection Device I 2 t ON max - and STD 0 - and STD 03 - and STD 05 - and STD 07 - and STD 09 - and STD - and STD 3 - and STD 5 - and STD 7 0,8 0,6 0,4 0,2 0, MPRO 27 & 50 Electronic Trip Unit ST set at reaker Rating In Setting Range,5 to 2 Ir in steps of 0, Time urrent urve ST- Protection Device I 2 t ON max - and STD 02 - and STD 04 - and STD 06 - and STD 08 - and STD - and STD 2 - and STD 4 - and STD 6 Green Iine = Full learing time Red Line = Non Tripping time Green Iine = Full learing time Red Line = Non Tripping time Tripping Time In Seconds (s) 0,0 0,0,00 x reaker rating In,00 0,00 Tripping Time In Seconds (s) 0,0 I protection set to 5 Ie () I protection set to 5 Ie () 0,0,00 x reaker rating In,00 0,00 MPRO 27 & 50 Electronic Trip Unit I set on breaker rating In HI Setting Range 2 to 5 Ie in steps of 0,5 - Time urrent urve I - Protection Device RELT - Protection Device MPRO 27 & 50 Electronic Trip Unit I set on breaker rating In HI Setting Range 2 to 5 Ie in steps of 0,5 - Time urrent urve HI - Protection Device RELT - Protection Device 0, HSIO device 0, HSIO device Green Iine = Full learing time Red Line = Non Tripping time Green Iine = Full learing time Red Line = Non Tripping time 0,0 0,0 Tripping Time In Seconds (s) 0,00 I set on breaker rating In RELT Setting Range,5 to 5 Ie in steps of 0,5 Tripping Time In Seconds (s) 0,00 I set on breaker rating In RELT Setting Range,5 to 5 Ie in steps of 0,5.5,00 x reaker rating In,00 0,00,00 x reaker rating In,00 0,00

17 Time urrent urves (cold state) HSIO & GF Protection Device MPRO 27 & 50 Electronic Trip Unit MPRO 27 & 50 Electronic Trip Unit 0, I Setting On sei at 5k - Time urrent urve HSIO - Protection Device I - Present & ON Green Iine = Full learing time Red Line = Non Tripping time 0, ST Ser at 2,5k STD - Time urrent urve HSIO - Protection Device I - NOT PESENY OR OFF ON 0k 85k 65k 50k Time urrent urves Green Iine = Full learing time Red Line = Non Tripping time Tripping Time In Seconds (s) 0,0 50 k 65 k 85 k 0 k 0, ,00 Tripping Time In Seconds (s) 0,0 0, ,00 mps mps MPRO 27 & 50 Electronic Trip Unit MPRO 27 & 50 Electronic Trip Unit - Time urrent urve GF- Protection Device - Time urrent urve GF- Protection Device GF set on breaker rating In Setting Range 0,2 to In in steps of 0,0 I 2 t -OFF- - and GFD 0 - and GFD 03 - and GFD 05 - and GFD 07 - and GFD 09 - and GFD - and GFD 3 GF set on breaker rating In Setting Range 0,2 to In in steps of 0,0 I 2 t -OFF- - and GFD 02 - and GFD 04 - and GFD 06 - and GFD 08 - and GFD - and GFD 2 - and GFD 4 0,8 0, ,8 0, ,4 0, ,4 0, Tripping Time In Seconds (s) 0, 0,0 3 Green Iine = Full learing time Red Line = Non Tripping time Tripping Time In Seconds (s) 0, 0, Green Iine = Full learing time Red Line = Non Tripping time 0, x reaker rating In,00,00 0, x reaker rating In,00,00.6

18 M-PT Time urrent urves (cold state) GF Protection Device Technical overview 0,8 0,6 0,4 0,2 MPRO 27 & 50 Electronic Trip Unit - Time urrent urve GF- Protection Device GF set on breaker rating In Setting Range 0,2 to In in steps of 0, I 2 t low -ON- - and GFD 0 - and GFD 03 - and GFD 05 - and GFD 07 - and GFD 09 - and GFD - and GFD 3 0,8 0,6 0,4 0,2 MPRO 27 & 50 Electronic Trip Unit GF set on breaker rating In Setting Range 0,2 to In in steps of 0, Time urrent urve GF- Protection Device I 2 t low -ON- - and GFD 02 - and GFD 04 - and GFD 06 - and GFD 08 - and GFD - and GFD 2 - and GFD 4 Tripping Time In Seconds (s) 3 0, 0,0 0, x reaker rating In Green Iine = Full learing time Red Line = Non Tripping time,00,00 Tripping Time In Seconds (s) 4 0, 2 0,0 0, x reaker rating In 2 Green Iine = Full learing time Red Line = Non Tripping time,00,00 MPRO 27 & 50 Electronic Trip Unit - Time urrent urve GF- Protection Device GF set on breaker rating In Setting Range 0,2 to In in steps of 0,0 I 2 t med -ON- - and GFD 0 - and GFD 03 - and GFD 05 - and GFD 07 - and GFD 09 - and GFD - and GFD 3 MPRO 27 & 50 Electronic Trip Unit - Time urrent urve GF- Protection Device GF set on breaker rating Inv Setting Range 0,2 to In in steps of 0,0 I 2 t med -ON- - and GFD 02 - and GFD 04 - and GFD 06 - and GFD 08 - and GFD - and GFD 2 - and GFD 4 0,8 0, ,8 0, ,4 0, ,4 0, Tripping Time In Seconds (s) 0, 0,0 3 Green Iine = Full learing time Red Line = Non Tripping time Tripping Time In Seconds (s) 0, 0, Green Iine = Full learing time Red Line = Non Tripping time.7 0, x reaker rating In,00,00 0, x reaker rating In,00,00

19 Time urrent urves (cold state) GF Protection Device 0,8 0,6 0,4 0,2 MPRO 27 & 50 Electronic Trip Unit GF set on breaker rating In Setting Range 0,2 to In in steps of 0, Time urrent urve GF- Protection Device I 2 t max -ON- - and GFD 0 - and GFD 03 - and GFD 05 - and GFD 07 - and GFD 09 - and GFD - and GFD 3 0,8 0,6 0,4 0,2 MPRO 27 & 50 Electronic Trip Unit GF set on breaker rating In Setting Range 0,2 to In in steps of 0, Time urrent urve GF- Protection Device I 2 t max -ON- - and GFD 02 - and GFD 04 - and GFD 06 - and GFD 08 - and GFD - and GFD 2 - and GFD 4 Time urrent urves Tripping Time In Seconds (s) 3 0, 0,0 0, x reaker rating In Green Iine = Full learing time Red Line = Non Tripping time,00,00 Tripping Time In Seconds (s) 4 0, 2 0,0 0, x reaker rating In 2 Green Iine = Full learing time Red Line = Non Tripping time,00,00.8

20 M-PT M-PT ccessories wide range of optional accessories have been developed that are compatible with all M-PT air circuit breakers, regardless of nominal rating or frame size. Each one incorporates 'easy-fit' design features for quick installation, either in the factory or by the user on site. Shunt trip Technical overview Motorised spring charging unit Energisation, locally or remote, will instantaneously activate the circuit breaker mechanism, ensuring rapid disconnection of the main contacts. In addition, a series connected auxiliary switch ensures automatic isolation whenever the circuit breaker is open. Shunt trip releases also have a wide operational voltage range, and they include the same easy-fit, clip-on/plug-in connectors as the closing coil above. The unique motor/gearbox unit is specially designed to operate with the full range of M-PT breakers. It is easily fitted with just two bolts. In the event of circuit breaker closure, this unit will automatically recharge the spring in readiness for instant reclosure should the need arise. High speed recharging ensures that the springs are fully charged within approximately three seconds following a release. s an optional feature, a "springs charged" contact is available for the motor unit. ircuit breaker closing coil Undervoltage release The closing coil is an easy-to-fit, clip-on unit, with simple plugin connectors. This permits either local or remote release of the spring charged closing mechanism by electrical operation. n additional anti-pumping safety feature also ensures that the electrical closing signal must be released before further closure is attempted, and a cut-off is instigat-ed should a closing signal be maintained. ecause each coil operates within a wide voltage range, the number of individually rated coils required is drastically reduced. Instantaneously releases the circuit breaker trip mechanism should the supply voltage dip below the pre-set value. Simple to install, these devices have the same easy-fit features as previously described. Note: This is a 'no-volt/ no-close device. The circuit breaker cannot be closed (manually or electrically) unless the undervoltage release coil is energised. Time delay undervoltage release Similar to the above, but this electronic device prevents nuisance tripping of the circuit breaker if circuit interruption is not desirable when supply voltage drop is only transient. Fixed time delay 3 sec ±sec. uxiliary trip combination The M-PT circuit breaker can be equipped with the following auxiliary trips or releases x Shunt trip + x losing coil + x Undervoltage release or time delay Undervoltage release.9

21 uxiliary switches The M-PT circuit breaker is equipped with 5 NO and 3 N auxiliary switches as standard. Maximum number of contacts is 8, for alternative configurations please contact for availability. assette main terminal adaptors Mechanical operation counter Easily fitted, this useful accessory may be specified for use with either manual or motor charged M-PT circuit breakers. It is clearly visible through the front panel, and the counter provides an accurate record of the cumulative number of complete breaker closing operations. ombinations of rear and front access connections possible for entire range. Tested and approved from 50 to 80k. M-PT ccessories Key interlock facility To simplify main busbar or cable termination, M-Pact provides a full range for rear and/or front access connection. olt-on adaptor kits can be fitted easily to suit either horizontal or vertical connections. Ready-to-fit interlocking device: Ronis, for installation between separate circuit breakers, available in kit form. This valuable safeguard ensures that a circuit breaker cannot be closed unless the dedicated key has been inserted and secured within the lock. Lock and key types Ronis: Type 4 lock with standard key, /4" turn rotation to trap the key, compulsory spindle size..20

22 M-PT able/busbar earthing device luster contacts Technical overview ll 'M-PT' circuit breakers can be fitted with an earthing device. It has a short circuit fault capacity equal to the Icw rating of the breaker. This permits either the feeder cables or the busbar to be safety held at earthed potential and locked during system maintenance operations. arriage position switch These are the main isolating contacts which are fitted to the rear terminals on the moving portion of the withdrawable unit. s part of standard inspection and maintenance procedures, cluster contacts have been designed to be easily and quickly removed and replaced using universal cluster pliers. 2/3 way cable mechanical interlocks vailable as an optional device for mounting within the base of the cassette, this switch provides six single pole changeover contacts for local or remote electrical indication of the circuit breaker status: onnected, Test and Disconnected. The Disconnected position is indicated only when minimum isolating distances between contacts on both the main and auxiliary circuits have been achieved. This option is in addition to the mechanical indicators which are fitted as standard. When installed, the carriage switch is IP2X protected and includes wiring to a terminal block located on the left-hand side of the cassette. Note: The carriage position switch is an option only suitable for withdrawable circuit breakers. vailable for fixed and withdrawable circuit breakers. These units enable the direct interlocking of M-PT circuit breakers, either mounted side-by- side or stacked. The interlocking mechanisms are connected by a specially designed cable in ' from 3' OR '2 from 3' configuration, and any mix of current ratings / pole configurations can be accommodated. Standard cable lengths available:.6, 2.0, 3.0 metres. (Please contact our technical customer service department if longer length is required.).2

23 Interlocks Mechanical interlocks can be fitted to the following electrical systems and can link 2 or 3 circuit breakers of any rating or number of poles, Fixed or Withdrawable. Typical circuit Interlock configuration Possible combinations Type Interlocking between 2 circuit breakers normal power supply 2 generator (emergency) supply Type Interlocking between 3 circuit breakers I 0 0 I ircuit breaker can only close if 2 is open ircuit breaker 2 can only close if is open M-PT ccessories 3 power supplies (generator or transformers) feeding the same busbar but parallel operation is prevented. vailable upon request I I I Only from 3 breakers can be closed Type Interlocking between 3 circuit breakers 2 bus sections can be powered by a single transformer (bus coupler closed) or by both transformers (bus coupler open). vailable upon request I I I I 0 I 0 I I I I 0 ny 2 from 3 circuit breakers can be closed ny from 3 circuit breakers can be closed Type D Interlocking between 3 circuit breakers 2 normal power supply not set in parallel. power supply may assist the priority circuit vailable upon request I I 0 I I I ircuit breakers and/or 2 can be closed only if 3 is open ircuit breaker 3 can only be closed if & 2 are both open.22

24 M-PT ircuit breaker insertion interlock ircuit breaker handling truck Technical overview y incorporating this optional security interlock device into a system, it prevents the inadvertent insertion of an incorrectly rated withdrawable circuit breaker into a cassette. Specifically designed for use with the M-PT range, this dedicated handling truck is a useful accessory when faced with the task of inserting or removing the circuit breaker from its panel, or when transporting the unit should it be outside its cassette. Installers will also find it particularly valuable for toptier mounted circuit breakers. assette interlock vailable for withdrawable circuit breakers only, this sophisticated interlock system secures the circuit breaker in the disconnected position by means of a Ronis key. When the key is removed, the safety shutters are automatically locked in position, thus preventing access to the contacts and also ensuring that the racking mechanism is not operable. For lock and key details refer to key interlock facility section (p..2) Sealed door panel escutcheon n optional IP54 complete front door panel is available should a higher degree of protection be necessary..23

25 Plug-in Portable Test Unit (PTU) uxiliary Power Unit (PU) Specially designed for reliable testing of the MR and HSIS protection systems on each phase, by means of tertiary injection. The test unit is also used to prove both overcurrent and earth fault pick-up levels.an also be employed to test for tripping in order to verify efficient microprocessor operation. The test unit incorporates a set of rechargeable batteries and includes a charger unit as standard. vailable to be fitted within the circuit breaker cubicle, an PU ensures that M-PRO receives independent and continuous power at all times. The PU accepts any input supply voltage within 380V, V, 220V /D. Maximum input current is 0.5. m length cable (twisted pair) should be used to connect auxiliary supply and MPRO protection relay. M-PT ccessories ccessories Performance Data Device uxiliary & carriage switch Motor operator losing coil Shunt trip Instantanious Undervoltage release Operating Voltage (V) Rating D Operating range (mps resistive) , to. times rated voltage to. times rated voltage to. times rated voltage V D-50W -300V D-250W -300V D-250W Inrush power consumption 300V Holding power consumption 20V uxiliary power unit, 220, 380,

26 M-PT Order codes Technical overview Order codes Wiring diagrams Dimensional drawings.2 Specify on the order.3 M-PT ir ircuit reaker - Type - 50k.5 M-PT ir ircuit reaker - Type D - 65k.7 M-PT ir ircuit reaker - Type H,H 2-80k.9 Factory Mounted Trip Units. Spare Trip Units.

27 . ustomer Name 2. Project 3. Quanitity Specify on the Order ode MP - Voltage (Ue) Device Type Type D Type H Type H 2 2. Rating Number of poles 3-pole 4-pole neutral left 4-pole neutral right 4. System 3 phase 3 wire 3 phase 4 wire 5. Frequency 50Hz 60Hz 6.Type Top & ottom connection Fixed Front or Rear Horizontal Withdrawable Front or Rear Horizontal Rear Vertical Moving portion only 7. Protection Non automatic MPRO 27 MPRO 50L MPRO 50H 8. Earth Fault options Unrestricted (UEF) Restricted (REF) Stand-by (SEF) 9. M PRO options Portable test unit Operations counter Mechanical Trip alarm Switch (n/o) 2. ontrol voltage MOP ST uxiliary power unit 24/30V D UV lternative 48V D /30V D /30V 220/250V D 220/250V 380/440V With motor changing singinal with 3. arriage switch Factory fitted Loose kit 4. Interlocks Door interlock Left Hand Door Interlock Right Hand Door Interlock Ronis assette Key interlock Profalux assette Key interlock Roins key lock D ircuit breaker mis-insertion interlock able Interlock Type 2 way Type from 3 way Type 2 from 3 way Type D from 3 way able Length required (in centimeters) Miscellaneous Mechanical operations counter lifting truck IP54 door panel Titan truck adaptor kit 6. Special requirements (PLESE SPEIFY NY IMPORTNT INSTRUTIONS) UVTD Specify on the Order Note: only Fr type D & Fr 2 type H2 offer Ue=690Vac, others are Ue=45Vac..2

28 M-PT M-PT ir ircuit reaker - TYPE - 50k asic circuit breaker manually operated, 5 NO and 3 N auxiliary switches. Withdrawable pattern - basic circuit breaker and cassette with flat copper terminals rear connected. Fixed pattern - basic circuit breaker with rear terminals horizontal. Withdrawable and Fixed Pattern Order codes Withdrawable Fixed Pattern Frame size Rating () Poles at. no. at. no MP3W04 MP3F04 4 MP4W04 MP4F MP3W08 MP3F08 4 MP4W08 MP4F MP3W MP3F 4 MP4W MP4F MP3W2 MP3F2 4 MP4W2 MP4F MP3W6 MP3F6 4 MP4W6 MP4F MP3W20 MP3F20 4 MP4W20 MP4F MP3W25 MP3F25 4 MP4W25 MP4F MP32W32 MP32F32 4 MP42W32 MP42F MP32W40 MP32F40 4 MP42W40 MP42F40 Installation: Units rated < 600 have reduced copper section. Refer to engineered drawings in section. Rear 'T' onnections (for cassette only) Pequired Frame size Rating () Poles Quantity at. no. at. no. 400 to RTHOR Horizontal 4 8 RTHOR Horizontal 400 to RTVER Vertical 4 8 RTVER Vertical 2000 & RTUNI Universal 4 8 RTUNI Universal RT2UNI Universal 4 8 RT2UNI Universal Standard N/ Vertical 4 Standard N/ Vertical Front ccess onnections Withdrawable TOP connections OTTOM connections Frame size Rating () Poles at. no. at. no. 400 to F3W6T F3W6 4 F4W6T F4W to F3W25T F3W25 4 F4W25T F4W F32W32T F32W32 4 F42W32T F42W F32W40T F32W40 4 F42W40T F42W40.3

29 Front ccess onnections Withdrawable TOP connections OTTOM connections Frame size Rating () Poles at. no. at. no. 400 to F3F6T F3F6 4 F4F6T F4F to F3F25T F3F25 4 F4F25T F4F F32F32T F32F32 4 F42F32T F42F F32F40T F32F40 4 F42F40T F42F40 assette only asic cassette with flat copper terminals rear connected. Frame size Rating () Poles at. no. 400 to MP36 4 MP to MP325 4 MP MP MP MP MP4240 ir ircuit reaker - TYPE - 50k Moving Portion only asic circuit breaker manually operated, 5 NO and 3 N auxiliary switches and cluster contacts. Frame size Rating () Poles at. no MP3M04 4 MP4M MP3M08 4 MP4M MP3M 4 MP4M MP3M2 4 MP4M MP3M6 4 MP4M MP3M20 4 MP4M MP3M25 4 MP4M MP32M32 4 MP42M MP32M40 4 MP42M40 Earthing Device See page.6 (OTTOM).4

30 M-PT M-PT ir ircuit reaker - TYPE D - 65k asic circuit breaker manually operated, 5 NO and 3 N auxiliary switches. Withdrawable pattern - basic cir cuit breaker and cassette with flat copper terminals rear connected. Fixed pattern - basic circuit breaker with rear terminals horizontal. Withdrawable and Fixed Pattern Order codes Withdrawable Fixed Pattern Frame size Rating () Poles at. no. at. no MPD3W04 MPD3F04 4 MPD4W04 MPD4F MPD3W08 MPD3F08 4 MPD4W08 MPD4F MPD3W MPD3F 4 MPD4W MPD4F MPD3W2 MPD3F2 4 MPD4W2 MPD4F MPD3W6 MPD3F6 4 MPD4W6 MPD4F MPD3W20 MPD3F20 4 MPD4W20 MPD4F MPD3W25 MPD3F25 4 MPD4W25 MPD4F MPD32W32 MPD32F32 4 MPD42W32 MPD42F MPD32W40 MPD32F40 4 MPD42W40 MPD42F40 Rear 'T' onnections (for cassette only) Pequired Frame size Rating () Poles Quantity at. no. at. no. 400 to RTUOR Universal 4 8 RTUOR Universal RT2UNI Universal 4 8 RT2UNI Universal Standard N/ Vertical 4 Standard N/ Vertical Front ccess onnections Withdrawable TOP connections OTTOM connections Frame size Rating () Poles at. no. at. no. 400 to F3W6T F3W6 4 F4W6T F4W to F3W25T F3W25 4 F4W25T F4W F32W32T F32W32 4 F42W32T F42W F32W40T F32W40 4 F42W40T F42W40.5

31 Front ccess onnections Withdrawable TOP connections OTTOM connections Frame size Rating () Poles at. no. at. no. 400 to F3FD6T F3FD6 4 F4FD6T F4FD to F3FD25T F3FD25 4 F4FD25T F4FD F32FD32T F32FD32 4 F42FD32T F42FD F32FD40T F32FD40 4 F42FD40T F42FD40 assette only asic cassette with flat copper terminals rear connected. Frame size Rating () Poles at. no. 400 to MPD36 4 MPD MPD MPD MPD MPD4240 ir ircuit reaker - TYPE D - 65k Moving Portion only asic circuit breaker manually operated, 5 NO and 3 N auxiliary switches and cluster contacts. Frame size Rating () Poles at. no MPD3M04 4 MPD4M MPD3M08 4 MPD4M MPD3M 4 MPD4M MPD3M2 4 MPD4M MPD3M6 4 MPD4M MPD3M20 4 MPD4M MPD3M25 4 MPD4M MPD32M32 4 MPD42M MPD32M40 4 MPD42M40 Earthing Device Frame size Rating () Poles at. no. 400 to EDF3P6 4 EDF4P to EDF3P25 4 EDF4P to EDF23P40 4 EDF24P40.6

32 M-PT M-PT ir ircuit reaker - TYPE H,H 2-80k asic circuit breaker manually operated, 5 NO and 3 N auxiliary switches. Withdrawable pattern - basic circuit breaker and cassette with flat copper terminals rear connected. Fixed pattern - basic circuit breaker with rear terminals horizontal. Withdrawable and Fixed Pattern Order codes Frame size Rating () Poles Withdrawable Fixed Pattern Withdrawable Fixed Pattern at. no. at. no. at. no. at. no MPH 32W08 MPH 32F08 MPH 2 32W08 MPH 2 32F08 4 MPH 4L2W08 MPH 4L2F08 MPH 2 4L2W08 MPH 2 4L2F MPH 32W MPH 32F MPH 2 32W MPH 2 32F 4 MPH 4L2W MPH 4L2F MPH 2 4L2W MPH 2 4L2F MPH 42W2 MPH 32F2 MPH 2 32W2 MPH 2 32F2 4 MPH 4L2W2 MPH 4L2F2 MPH 2 4L2W2 MPH 2 4L2F MPH 32W6 MPH 32F6 MPH 2 32W6 MPH 2 32F6 4 MPH 4L2W6 MPH 4L2F6 MPH 2 4L2W6 MPH 2 4L2F MPH 32W20 MPH 32F20 MPH 2 32W20 MPH 2 32F20 4 MPH 4L2W20 MPH 4L2F20 MPH 2 4L2W20 MPH 2 4L2F MPH 32W25 MPH 32F25 MPH 2 32W25 MPH 2 32F25 4 MPH 4L2W25 MPH 4L2F25 MPH 2 4L2W25 MPH 2 4L2F MPH 32W32 MPH 32F32 MPH 2 32W32 MPH 2 32F32 4 MPH 4L2W32 MPH 4L2F32 MPH 2 4L2W32 MPH 2 4L2F MPH 32W40 MPH 32F40 MPH 2 32W40 MPH 2 32F40 4 MPH 4L2W40 MPH 4L2F40 MPH 2 4L2W40 MPH 2 4L2F40 Rear 'T' onnections (for cassette only) Frame size Rating () Poles Required Quantity at. no RT2UNI 4 8 RT2UNI Standard N/ 4 Standard N/ Front ccess onnections Withdrawable TOP connections OTTOM connections Frame size Rating () Poles at. no. at. no F42WH32T F32WH32 4 F42WH32T F42WH F32WH40T F42WH40 4 F42WH40T F42WH40 Front ccess onnections Withdrawable TOP connections OTTOM connections Frame size Rating () Poles at. no. at. no F32FH32T F32FH32 4 F42FH32T F42FH F32FH40T F32FH40 4 F42FH40T F42FH40.7

33 assette only asic cassette with flat copper terminals rear connected. Frame size Rating () Poles at. no MPH MPH MPH3240 Moving Portion only 4 MPH4240 asic circuit breaker manually operated, 5 NO and 3 N auxiliary switches and cluster contacts. Frame size Rating () Poles at. no. at. no MPH 32M08 MPH 2 32M08 4 MPH 42M08 MPH 2 42M MPH 32M MPH 2 32M 4 MPH 42M MPH 2 42M MPH 32M2 MPH 2 32M2 4 MPH 42M2 MPH 2 42M MPH 32M6 MPH 2 32M6 4 MPH 42M6 MPH 2 42M MPH 32M20 MPH 2 32M20 4 MPH 42M20 MPH 2 42M MPH 32M25 MPH 2 32M25 4 MPH 42M25 MPH 2 42M MPH 32M32 MPH 2 32M32 4 MPH 42M32 MPH 2 42M MPH 32M40 MPH 2 32M40 4 MPH 42M40 MPH 2 42M40 ir ircuit reaker - TYPE H,H 2-80k Earthing Device Frame size Rating () Poles at. no EDF23P40 4 EDF24P40.8

34 M-PT Factory Mounted Trip Units asic functionality MPRO-27 Functionality and application at. No. MPRO-27 trip unit For Frame GL0M3-SF LT x In = Ir For Frame 2 GL200M3-SF LTD ST I 2 t ON or OFF STD Order codes Extended functionality MPRO-27 trip unit For Frame GL0M5-SF LT x In = Ir For Frame 2 GL200M5-SF LTD ST I 2 t ON or OFF STD GF sum. I 2 t ON or OFF GFD asic functionality Extended functionality MPRO-50 MPRO-50L For Frame GH0M7-6SF LT band choice (LT- or LT-F) LT x In = Ir Dual GF protection (Res./SUM or T) -ORLT- Relt Instantaneous & F 0.4- x In = Ir Modbus ommuniction ST STD GF sum. I 2 t ON or OFF For Frame 2 GH200M7-6SF -ND/ORGF LT band choice (LT- or LT-F) R I 2 t ON or OFF Dual GF protection (Res./SUM or T) GFD Relt Instantaneous & I Modbus ommuniction RELT Input supply 24V () MPRO-50H For Frame GQ0M7-6SF LT band choice (LT- or LT-F) LT x In = Ir Dual GF protection (Res./SUM or T) -ORLT- Relt Instantaneous & F 0.4- x In = Ir Modbus ommuniction ST STD GF sum. I 2 t ON or OFF For Frame 2 GQ200M7-6SF -ND/ORGF LT band choice (LT- or LT-F) R I 2 t ON or OFF Dual GF protection (Res./SUM or T) GFD Relt Instantaneous & I Modbus ommuniction RELT Input supply -30V D or -250V () ccessories Designation Power supply V - 24V D 0.22 () Digital test kit MPROPU GTUTK20.9 () To set GF settings below 0.2 x and to allow use of the 4 remote in- and 4 relay outputs andauciliary supply is required (GPU unit can be used for 24V unit).

35 Spare Trip Units () asic functionality Extended functionality MPRO-27 Functionality and application at. No. MPRO-27 trip unit For Frame GL0M3-SR LT x In = Ir For Frame 2 GL200M3-SR LTD ST I 2 t ON or OFF STD MPRO-27 trip unit For Frame GL0M5-SR LT x In = Ir For Frame 2 GL200M5-SR LTD ST I 2 t ON or OFF STD GF sum. I 2 t ON or OFF GFD Spare Trip Units asic functionality Extended functionality MPRO-50 MPRO-50L For Frame GH0M7-6SR LT band choice (LT- or LT-F) LT x In = Ir Dual GF protection (Res./SUM or T) -ORLT- Relt Instantaneous & F 0.4- x In = Ir Modbus ommuniction ST STD GF sum. I 2 t ON or OFF For Frame 2 GH200M7-6SR -ND/ORGF LT band choice (LT- or LT-F) R I 2 t ON or OFF Dual GF protection (Res./SUM or T) GFD Relt Instantaneous & I Modbus ommuniction RELT Input supply 24V (2) MPRO-50H For Frame GQ0M7-6SF LT band choice (LT- or LT-F) LT x In = Ir Dual GF protection (Res./SUM or T) -ORLT- Relt Instantaneous & F 0.4- x In = Ir Modbus ommuniction ST STD GF sum. I 2 t ON or OFF For Frame 2 GQ200M7-6SF -ND/ORGF LT band choice (LT- or LT-F) R I 2 t ON or OFF Dual GF protection (Res./SUM or T) GFD Relt Instantaneous & I Modbus ommuniction RELT Input supply -30V D or -250V (2) ccessories Designation Power supply V - 24V D 0.22 (2) Digital test kit MPROPU GTUTK20 () Please specify breaker serial number on ordering. (2) To set GF settings below 0.2 x and to allow use of the 4 remote in- and 4 relay outputs andauciliary supply is required (GPU unit can be used for 24V unit)..