Frame Sizes: AKJ/ AKJT I AKJU-50 and AKR/ AKRU-30/ 50, AKRT-50

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1 RENEWAL PARTS LOW VOLTAGE POWER CIRCUIT BREAKERS Frame Sizes: AKJ/ AKJT I AKJU-50 and AKR/ AKRU-30/ 50, AKRT-50 GEF-4527F Supersedes GEF-4527E

2 TABLE A. INDEX OF BREAKER MODELS COVERED BY THIS PUBLICATION Breaker Designation Frame Mounting Type Size I 1-1 Drawout I 1-1 I ' I Stationary 'ii CAmoeres) AKO AKD-5 AKD-6 Substructure "' "' 600 Volts Ac 50/60 Hz. 4/5/N AKJ 4A/5A/NA 50/50H 1600 '±=cl 4S/5S/NS 4/5/N AKJT 4A/5A/NA 50/50H S/5S/NS 4/5 AKJU A/5A 4/5 4A/5A/NA 30/30H/ /58/N8 30L 4S/5S/NS AKR 3/4/5 3A/4A/5A/NA 50/50H B/5B/NB 4S/5S/NS 4/5 50 4A/5A/NA AKRT /5B/N8 50/50H 4S/58/N8 4A/5A B/5B AKRU 3A/4A/5A /5B 250 Volts De 2 50 N 500 2A 50 AKJ 2000 NA 500 2S NS ~ 2A 30 NA 300 2B NB 300 2S 30 AKR NS 300 2A 50 NA 500 2B NB NS 500 ORDERING INSTRUCTIONS 1. Furnish the complete nameplate data of the breaker. 2. Specify quantity, cat. no., item no. and description for each part, and state this bulletin no. 3. Standard hardware items (screws, bolts, nuts, washers, etc.) are not listed in this bulletin and should be obtained locally. 4. For prices contact the nearest General Electric Company office. 2

3 Figure 1. AKJ 4 5D (AKO type) Figure 2. AKJU-4A 50 (AKD 5 type) 3

4 ~--18, 19 ~ ,.,.. Figure 3. Manually operated AKR-50 breaker (Drawout type A) with arc quenchers and barriers removed Figure 4. Manually operated AKR-SOH breaker (Drawout type B)

5 Figure 5. Molded arc quenchers. Employed on (1) AKJT/ AKRT-50H breakers and (2) all other models whose nameplate designation bears the -1 suffi, e.g., AKR-4A See note G) below. Fig. No. Quantity required per 3 pole breakev Item Cat. r-,to. Description No. ~ Y.>a ~a '-*-~ N"'!'JS~~~ ~t;f ~) ~~~~ f>a~ ~\~ #~'S ~~ ~~ D404G2 Arc quencher - ceramic type (Ac or De) D404G4 Arc quencher - ceramic type (Ac or De) D404G1 Arc quencher - ceramic type (Ac or De) D404G3 Arc quencher - ceramic type (Ac or De) A1348P1 2H _9l<!_tl'lP for Item N22P Screw for Items 2 or D404G7 Arc quencher - molded type (Ac only) <D D404G9 Arc quencher - molded type (Ac only) <D D404G10 Arc quencher - molded type {Ac only) <D A1169P1 Retainer for Item P1 lnterphase barrier A9649P2 Vertical barrier, outer C4611 P1 Horizontal barrier A9903P1 Insulating barrier, left, on end of main shaft A9903P2 lnsulatinq barrier riqht on end of main shaft A9915P1 Insulating barrier on Item RE350P1 Molded pole base 6, A9902G1 Arc runner I 8,9 13A G1 Arc runner A9605G1 Drawout trio oaddle N535P13208 Pin for Item A9685G1 Drawout mounting stud and bracket assembly - front A6976P53 Drawout mounting stud - rear C4610G1 Standard escutcheon, manual breakers built June 1977 or later C4610G3 Standard escutcheon, manual breakers built before June B265G1 Deep escutcheon, manual breakers, B-type drawout only 3, D403P1 Plastic closing handle, manual breaker A9613P1 Window, clear plastic Cover C4612P1 Standard escutcheon, electrical breakers Cover G2 Deep escutcheon, electrical breakers, E3-tyi:ie drawout only N529P53B Rackout plug button ~ A9572G2 Trip button and rod A9616G2 CLOSE button for manual breaker A6990P143 Spring for CLOSE button A9585G3 Closinq spring assembl}' A9585G4 Closing spring assembly 3 29 ~I 1-192A9585G1 Closing spring assembly I A9585G2 Closing spring assembly Molded and ceramic quenchers cannot be intermied: all poles of a breaker must employ quenchers of the same type. ~Covers unused racking screw opening in escutcheon - used on stationary models and all AKD-5 type drawout AKJ/AKJU/AKJT-50 models. 5

6 , 70: Figure 6. AKR/ AKRU-30 contact structure (one pole) Figure 7. AKR-30H contact structure (one pole) Fig. No. Item No. Cat. No. Description ~~ I 6, 1 I 6, 7 6,7,8,9 6, 7 6, 7 6, 7 8,9 8, * See Table F 3 See Table F - 192A9847G1 192A9847G A9509G 1-192A9511G3-192A9845P1-192A9882G G B509G A9544G A6990P A6990P A6990P A9514P1 Upper stud assembly Lower stud assembly Stationary arcing contact Stationary main contact Contact spring assembl Movable contact Outer pivot for item 45 Inner pivot for item 45 Stationary arcing contact, left Stationary arcing contact, right Plunger for stationary arcing contact Spring, outer, for stationary arcing contact Spring, middle, for stationary arcing contact Spring, inner, for stationary arcing contact Pivot for stationary arcing contact 6 Recommended stock for normal maintenance

7 13A-, Figure 8. AKJ/AKR-50/50H, AKJU/AKRU-50, AKR 30L contact structure (one pole) Figure 9. AKJT/ AKRT-50/SOH contact structure (one pole) Quantity per 3-Pole Breaker Fig. No. Item No. Cat. No. Description 8, A9505G2 Stationary intermediate contact 8,9 56* A9505G1 Stationary main contact 8 57* 3 192A9511G1 Movable contact, left 9 58* A9977G2 Movable contact, left 8 59* 3 192A9511G2 Movable contact, right 9 60* A9977G1 Movable contact, right A9912G1 Pivot for movable contact A9972P1 Pivot, lower right, for movable contact A9972P2 Pivot, lower left, for movable contact A9972P3 Pivot, upper right, for movable contact A9972P4 Pivot, upper left, for movable contact 6, A9843P1 Shaft for movable contact pivot A9602P1 Shaft for movable contact pivot A9985P1 Shaft for movable contact pivot A6990P152 Spring for movable contact pivot A6990P190 Spring for movable contact pivot Recommended stock for normal maintenance. 7

8 85 86, -----as, '/ 11; ' «Iii' _! Figure 10. Front frame and mechanism assembly, manually operated AKR-50 breaker \ \ I ,..;o Figure 11. Mechanism assembly (Item 93)

9 ' 1. Figure 12. Electrically operated AKRU-50 with front escutcheon removed ;I/Al Quantity per 3-pole breaker / Fig. Item No. No. Cat. No. 't>"'*~ 't>"''.p.p ~,# ~!-.\"l'!-.\"l' "~~~'<(' *"~ *"~ '<(' '<(' "l' "l' Description A 7573P111 Coupling pin for movable contact assembly A9841P1 Steel link for movable contact assembly A1411P1 Steel link for movable contact assembly A9597P1 Steel link for movable contact assembly 9, A9554P1 Adjusting screw for contact assembly 9, C2127G1 Plastic link for movable contact assembly A7573P110 Insulated link pin for contact assembly A9536G2 Handle crank - manual breaker A9552G2 Adjustable link for manual mechanism A6990P142 Spring, handle return A6990P153 Opening spring A9631 P1 Channel insulation A9542P1 Open/close link to main shaft A7573P108 Pin for pawl spring, electric breaker A677 4P41 Pawl spacer, manual breaker A6774P41 Pawl spacer, electric breaker C4616G1 Mechanism assembly, manual breaker C4616G2 Mechanism assembly, electric breaker A9651G1 Buffer paddle assembly for trip shaft B520G2 Open/close indicator, manual breaker B522G1 Open/ close indicator, electric breaker B518G2 Charge/ discharge indicator A6990P151 Spring for item L731G1 Ratchet assembly with roller * See Table B Gear motor * See Table B Closing relay (X) * See Table B Anti-pump relay (W) * See Table B Closing solenoid (CC) A7153P7 Cutoff switch (2NO) A7153P8 Cutoff switch (2NC) A9717G2 Closing pushbutton switch on escutcheon * Recommended stock for normal maintenance 9

10 124 LINKAGE ASSEMBLY 127 PROP BRACKET & LEVER ASSEMBLY Figure 13. Closing spring interlock Figure 14. Blocking plate link (128) and closing switchette (129)

11 TABLE B. ELECTRICAL CLOSING DEVICES Gear Motor Closing Relay (X) Anti-pump Relay (W) Closing Solenoid (CC)t Volts Hertz (Item 101) (Item 102) (Item 103) (Item 104) Cat Cat. 192A Cat. 192A Cat. 192A DC G4 P1 P1 P1 125 DC DC t For all electrically operated breakers and manually operated breakers equipped with the remote close feature. Figure 16. Drawout racking mechanism (Item 130) Fig. No. Item No. Quantity per 3-Pole breaker - Cat. No. Description All models A6282P37 Rubber buffer A9562G2 Ratchet pawl, manual breaker A9562G2 Ratchet pawl, electric breaker A6990P207 Pawl spring (torsion) A9594P1 Pivot for item B557G1 Closing spring discharge linkage A6990P157 Torsion spring for item B541G1 Bracket and lever assembly A9545G1 Prop A9629P1 Blocking plate link A7153P3 Closing solenoid switchette C4618G1 Drawout racking mechanism (**) (* *) Not required on AKD-5 type drawout AKJ/ AKJT I AKJU models. 11

12 Figure 17. Shunt trip device (Item 135) with mounting hardware (Item 137) Figure 18. Instantaneous undervoltage device (Item 138), with mounting hardware (Item 140). Figure 19. Auiliary switch, si-stage (Item 141). Figure 20. Separately mounted time delay unit for UV device (Item 143). 12 TABLE C. AUXILIARY SWITCHES Cat. No. Stages Contact Arrangement 192A9791Pp 2 2 ab ab ab ab ab ab ab ab ab ab ab ab ab ab ab ab 7 6 ab ab ab ab aa aa 8 6 ab ab ab ab bb bb 9 6 ab ab ab bb bb bb 10 6 ab ab bb bb ab ab 12 6 ab ab ab aa ab ab TABLE D. MOUNTING KITS (Necessary material to add accessories to a breaker not equipped previously with the device) 139C4621G18 139C4622G18 568B571G12 Mounting kit for shunt trip (also order auiliary switch and mounting kit if breaker does not have switch) Mounting kit for undervoltage device (time delay or instantaneous) Mounting kit for auiliary switch

13 TABLE E. Shunt Trip Device Instantaneous Time Delay Undervoltage Device Undervoltage Device t Complete Complete Complete with Coil with Coil with Coil (less mounting) Coil Only (less mounting) Coil Only (less mounting) Coil Only Volts Hertz (Item 135) (Item 136) (Item 138) (Item 139) (Item 138) (Item 139) Cat. Cat. Cat. Cat. Cat. Cat. 139C4378- K B309- K B309- K DC G 1 G55 G 1 G DC DC G 5 G DC t Breaker-mounted time-delay undervoltage device requires separately mounted static time delay unit (Item 143). Quantity per Fig. Item 3-Pole Breaker - No. No. All models Cat. No. Description See Table E Shunt trip device * 1 See Table E Coil for item See Table D Mounting hardware for item See Table E Undervoltage device (UV) * 1 See Table E Coil for item See Table D Mounting hardware for item See Table C Auiliary switch See Table D Mounting hardware for item TAKYUVT-1 UV time delay unit-125vdc input TAKYUVT-2 UV time delay unit - 250VDc input TAKYUVT-3 UV time delay unit- 208/240VAc 50/60Hz. input Recommended stock for normal maintenance. 13

14 40 41 AKR-30/30H AKR/ AKRT-50/50H/30L TABLE F. PRIMARY STUDS (Viewed from front of breaker) (Items 40 & 41) Stud Assembly Cat. No. Breaker Type L-e_ft_P_o_le-.,--C-e-nt~e~r -P-ol-e...-R-i-ht-Po_l_e- Models with ECS/SST trip devices u 286A7833G2 139C4600G3 AKJ-50/50H L 568B671G3 568B671G2 AKJU-50 Type u 286A7833G2 139C4600G3 AKO L 343l650G4 343L650G4 Type u 139C4600G3 139C4600G3 AKD-5 L 568B671G3 568B671G2 u 286A7833G4 139C4600G4 AKJT-50/50H L 56BB671G3 568B671G2 u 139C4632G1 139C4632G1 AKA/ AKRU-30 L 343L650G4 343L650G4 u 139C4632G2 139C4632G2 AKR-30H L 343L650G4 343L650G4 AKR 50/50H u 139C4600G3 139C4600G3 A KRU-50, AKR 30L l 343L650G4 343L650G4 AKRT H [± :139C4600G4 139C4600G OG34 286A7833G1-568B671G1 286A7833G1 343L650G4 139C4600G G1 286A7833G3 568B671G1 139C4632G1 343L650G4 139C4632G2 343L650G4 139C4600G3 343L650G4 139C4600G4 343L650G34 AKJ-50 AKR-30 AKR-50 U Upper Studs L = Lower Studs 286A7833G1 568B942G1 139C4632G1 343L650G97 139C4600G3 343L650G97 AKJ I AKJT-50/SOH 14 Figure 21. Rear views of drawout breakers showing typical stud arrangements

15 TABLE G PRIMARY DISCONNECT FINGER ASSEMBLY (ITEM 151)- QTY. 1 PER STUD (Viewed from front of breaker) I Group Number Breaker Type Cal. No. LeftM Pole Pole AKJ-50/50H 192A9668 u G6 G6 I AKJT-50/50H 192A9668 u L AKJU-50 with u Amp 192A9668 Fuses L u AKR-30/30H 192A9668- L AKR-50/50H u A AKA 30L L u AKRT-50/50H 192A L u AKRU A9668- L AKRU-50 with u Amp 192A Fuses L ARKU-50 with u Amp Fuses L U = Upper L = Lower Figure 22. Open fuse lockout device (item 163) Quantity per 3-Pole Breaker Fig. No. Item No. Cat. No. Description , 26, 27 12, t t l See Table G 386A110G2 568B580P1 192A9767P G1 134C2160G1 192A6990Pi A6990P A8227P6 192A8227P See Table H See Tables J & K 425D409G See Table L See Table M G See Table N See Table O See Table P L650G L671 Gi 1 See Table Q 1 108D8102G L650G2 1 See Table R 1 152G9219G G7578G G7578G2 $ 568B386G1 193A1990P1 Primary disconnect finger assembly Secondary disconnect block (7 points) - breaker mounted Bracket for item 152 Secondary disconnect insulation Secondary disconnect block (7 points) equipment mounted Positive interlock Torsion spring for Item 156 Return spring sliding cover (**) Terminal board for stationary breaker (6 points) Terminal board for stationary breaker (10 points) Primary fuse Fuse mountings O en fuse lockout device, drawout breaker Programmer unit, type ECS Programmer unit, type SST Flu shift trip device for ECS/SST Current sensor for ECS Current sensor for SST 4th-wire neutral sensor SST Disconnect block for item 169 breaker mounted Disconnect block for Item 169 equipment mounted Logic unit (Power Sensor) Power supply unit (Power Sensor) Magnetic trip device (Power Sensor) Current sensor assembly (Power Sensor) 4th-wire neutral sensor (Power Sensor) Disconnect block for item 176 breaker mounted Disconnect block for i~rri equipment mounted Overcurrent trip device types EC-1, EC-2A Maintenance closing handle Drawout racking handle t Quantity varies according to wiring. Maimum of 3 per breaker. ( ') Not required on AKD-5 type drawout AKJ/ AKJT I AKJU models. $ Replacement parts are not furnished. The complete trip device can be replaced as listed in the renewal parts section of the Apparatus Handbook. 15

16 AKRU-SA-30 AKRU-SA-30 AKJU-4A-50 AKRU-4A Figure 23. Fused breakers

17 Figure 24. Notching of 1600 ampere fuse Figure 25. AKRU , 350, and 400 ampere fuse. mounting ~ 1,03' T TABLE H. FUSES FOR FUSED BREAKERS (Item 161) NEMA Class J Fuse Ampere Rat in Cat. No. Breaker AKJU-50 AKRU-30 AKRU GF8B GF8B GF8B GF8B GF8B GF8B GF8B GF8B GF8B 1200 GFBB 1600 X GF8B 2000 GF9F2500AK X CD Fuse tangs must be notched per Fig. 24. The 2500 Amp. fuse size Is not available on AKJU-50 models Figure 26. AKRU-30/ to 2000 ampere fuse mounting 212 TABLE J. FUSE MOUNTING FOR AKRU 30 AND AKRU 50 WITH FUSES 2000 AMPERES OR LESS Fig. Item Qty No. No. Cat. No. Descriplion C4631 P1 Support frame, left C4631P2 Support frame, right G1 Support A9813P1 Spacer A9801P1 Spacer A9302G1 Fuse support ' 3 192A9803G1 Fuse support A9501P6 Spacer (used only with 300, 350, 400 ampere fuse on AKRU-30) TABLE K. Fig. Item No. No AMPERE FUSE MOUNTING FOR AKRU-50 Qty Cat. No. Description B581G2 Support frame, left B581G1 Support frame, right G2 Heat sink A9661P1 Upper barrier A9806G1 Lower barrier B552P1 Retainer Figure AKRU ampere fuse mounting 17

18 Trip Elements TABLE L. ECS PROGRAMMER UNIT (Item 164) Cat. No (Grouo No. below) 800 Amp. Frame Sizes With Current 1600 and With Current Sensors 225, Amp. Sensors 100 or 400, 600 or Frame 150 Amp. 800 Amp. Sizes L S(LO) I 2T G100 G98 G98 L S(HI) I 2T L S1LO) - 2T L S(HI) - 2T L - I 2T L S(LO) I L S(HI) I L S(LO) L S(HI) L - I Trip Elements L S(LO) I G 3T L S(HI) I G 3T L S(LO) - G 3T L ScHn G 3T L - I G 3T L S(LO) I G T L S(HI) I G T L S(LO) G T L S(HI) - G T L - I G T L ScLo> I 2T L S(HI) I 2T L S(LO) ' 2T L S(HI) - 2T L - I 2T L S(LO) I - - L S(HI) I L S(LO) L S(HI) - L - I - - TABLE M. SST PROGRAMMER UNIT (Item 165) Cat. No (Grouo No. below) 800 Amp. Frame Sizes 1600 Amp Amp. With Current With Current Frame Sensor Frame Sensor Amp. Sizes Sizes Amp. G90 G53 G49 G i L = Long time S (LO)= Short time (1.75L to 4L range) S (HI) = Short time (3L to 10L range) I = Instantaneous G = Ground fault Trip Indicators: T = Ground fault 2T = Overcurrent and short circuit 3T = Overcurrent, short circuit and ground fault 18

19 TABLE N. ECS CURRENT SENSORS Cat. No (Group No. below) Sensor Ampere 800 Amp Amp Amp. Rating Frame Frame Frame Sizes Sizes Sizes 100 G G G Figure 28. ECS current sensor (Item 167) Figure 29. EC$ programmer unit (Item 164) Figure 30. SST programmer unit (Item 165) Figure 31. ECS/SST flu shift trip device (Item 166) TABLE 0. SST CURRENT SENSORS Cat. No (Group No. below) Sensor Ampere 800 Amp Amp Amp. Tap Range Frame Frame Frame Sizes Sizes Sizes G G2 G G G6 Figure 32. SST current sensor with tap board (Item 168) 19

20 TABLE P. SST 4TH WIRE NEUTRAL SENSORS (Equipment mounted) Sensor Cal. No. 343L650 - (Grou No. below) Ampere Tap Used with breaker frame sizes R_a_n_g_e s_o_o Amp G G13 G G G28 Figure 33. SST 4th-wire neutral sensor / Figure 34. SST neutral sensor disconnect assembly - Figure 35. SST neutral sensor disconnect assembly - breaker mounted - Cat. 343L650G15 equipment mounted - Cat. 343L671G1

21 Figure 36. Power Sensor logic unil L L L L - - L L L L L - TABLE Q. POWER SENSOR LOGIC UNIT, TYPE PS-1A Cat. No. Trip Elements 184L410 - (Group No. below) S(LO) I G G52 S(HI) I G 55 S(LO) G 61 S(HI) - G 64 L - I G 58 S(LO) I G 67 8(HI) I G 70 S(LO) G 73 S(Hll - G 76 S(LO) l 41 8(HI) I - 42 S(LO) - 44 S(HI) I - 43 S(LO) I - 46 S(HI) l (LO) - 48 S1HI) L Long time S(LO) Short time (2 to 5X range) S(Hll Short time (4 to 10X range) I = Instantaneous G Ground fault Figure 37. Power Sensor power supply 174 Figure 38. Power Sensor magnetic trip device 21

22 TABLE R. Sensor Ampere Tap Range POWER SENSOR CURRENT SENSOR ASSEMBLY (Item 175) With Ground Fault Protection 139C4620G6 139C4620G8 Without Ground Fault Protection 139C4620G2 139C4620G4 Figure 39. Power Sensor current sensor assembly Figure 40. Power Sensor neutral sensor disconnect assembly Figure 41. Power Sensor 4th-wire neutral sensor 22

23 NOTES: 23

24 Distribution Equipment Division General Electric Company Plainville, Connecticut GENERAL ELECTRIC

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