RENEWAL PARTS AK-2-15 AK-2-25 AK-3-25 AKF-2-25 AK-2A-15 AK-2A-25 AK-3A-25 AKF-2A-25 AKU-2-25 AKU-3-25 AKU-2A-25 AKU-3A-25

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1 Data ubject to change without notice. RENEWAL PARTS POWER CIRCUIT BREAKERS TYPES 225 AMP FRAME SIZE 00 AMP FRAME SIZE GEF-449G Supersedes GEF-449F AK-2-5 AK-2-25 AK-3-25 AKF-2-25 AK-2A-5 AK-2A-25 AK-3A-25 AKF-2A-25 AKU-2-25 AKU-3-25 AKU-2A-25 AKU-3A-25 Fig.. Type AK-2-25 manually operated power circuit breaker ORDERING INSTRUCTIONS. Always specify the complete nameplate data of the breaker. (PHOTO ) 2. Specify the quantity, catalog number (if listed), reference number (if listed), description, and this bulletin number. 3. CAUTION: When local facilities for breaker recalibration are not available, the breaker should be forwarded to the nearest G-E Service Shop, or to the General Electric Company, 90 Elmwood Avenue, Philadelphia 42, Pa. 4. Standard hardware, such as screws, bolts, nuts, washers, etc., is not listed in this bulletin. Such items should be purchased locally. 5. For prices, refer to the nearest office of the General Electric Company. GENERAL. ELECTRIC

2 GEF (PHOTO ) fig. 2. Type AK-2-25 power circuit breaker back frame (operating mechanism removed) A " 29 '-= 3 4 Fig. 4. Cutaway view of type AK-2-25 electrically operated power circuit breaker 2 30 II j r h, Fig. 2A. Spring (back of pivot) ?! cf j j 2A Fig. 3. Moving and stationary contacts and cross bar assembly SA (PHOTO ) Fig. 5. Type AK-2-25 electrically operated power circuit breaker (escutcheon removed and dismantled)

3 Quantity Required Ref. for 3 -pole Breaker Catalog No. Frame Size Number 225 Amp** 00 Amp** la 227D90P Back plate C20G Insulation for upper stud, rear tlb C20G2 Insulation for upper stud, front C2S3G Upper stud assembly C2S3G2 Upper stud assembly B40P Barrier *4 3 29C257G Stationary contact assembly 3 29C257G2 Stationary contact assembly *5 * 3-29C257G4 Moving contact * C257G5 Moving contact * A250 Spring (outside poles) Description *7A 29C2SOP5 Spring clip (center pole) s C277P9 Barrier SA 29C277P0 Barrier, complete (includes Ref. Nos. S and SA) 9.29C277Gl Cross bar assembly C25SG3 Pivot * C2SOPS Spring (back of pivot) C25SG Lower stud assembly (not used on AK-3 or AK-3A) C25SG2 Lower stud assembly C52P Insulation (under lower stud) C2SOP7 Support (outside) C2SOP Support (intermediate) B2SSG Arc quencher 7-2C754G2 Arc quencher clamp AK -3 or 3A only 7 29C273G2 Arc quencher clamp (sand gray) AK-2 or 2A S C2SOP4 Stud, arc quencher clamp tl L25P29 Insulation for Ref. No. S t A993P9 Stop nut for Ref. No. S *2 2 42A2S Stationary contact spring 2A A20S Movable contact spring 2B 29C277Pll Spring clip t22 29C2SOP Moving contact pivot pin (center pole) C2SOP2 Moving contact pivot pin (outside poles) *24 042A0290 Spring 25 22C52G omagnet and armature assembly 2 See table B oclo sing coil See note below Overcurrent trip device 2S 3SA3P Clamp for EC -2 trip device 2S P Clamp for EC- trip device 29-29C2SP5 Retaining ring 29-29C2SlP Retaining ring S45C27G2 Primary disconnect assembly 30-3 S45C27G4 Primary disconnect assembly 30A 42A222 Spring C2SP3 Retainer * A00P2 Contact finger A29P Retainer A29P2 Retainer ASP4 Spacer Screw, hex. hd, /4 in. -20 by 3 /2 in. * Recommended for stock for normal maintenance. t Not shown. ** See breaker nameplate for frame size. 5 Electrically operated breakers Note for overcurrent trip devices: () No parts furnished for field installation on EC- trip devices. GEF-449G (2) Only part furnished for field installation on EC-2 or EC-2A trip devices is plastic cover, Cat. No. 242C45Pl. (3) When replacement trip devices are ordered, it is imperative that order includes complete nameplate reading of the breaker or breakers involved and, if a contemplated ampere rating change is involved, the order should also include information as to ampere rating, time-current characteristic, and instantaneous trip setting desired. Note for operating mechanisms: () Individual parts cannot be furnished for operating mechanisms. (2) When replacement is necessary give complete nameplate reading when ordering. 3

4 GEF-449G Quantity Required Ref. for 3-pole Breaker No. Frame Size 225 Amp** 00 Amp** t39a t t43a t44 t44 t *48 t49 A* 50 A* 5 TA52 TA*52A TA*52B TA52C A*53 A 54 A 55 * *58 59 *t maximum 4 maximum Catalog Number 38All0G2 22C505G 432A7G2 432A7G5 29C28P 29C28P2 42A33 22C502G 22C529G 0C789G 0C789G2 259C07G 259C07P0 259C07G2 259C07G3 259C07Pll 259C07G4 259C08G 27B9P 9D807P 48A B445P22 295B445P B445P223 B797P22 B797P223 llb797p222 22C50P 22C50P2 29C282G2 29C282G5 t t C299G G G274 84C85G 3493P 3493P2 3493P3 295B475P2 394Al44P 275B995P 95C3P 394A0P 457A73G 29C27G2 * Recommended for stock for normal maintenance. ** See breaker nameplate for frame size. t Not shown. Description Movable secondary disconnects (drawout breaker) Cutoff switch (electrically operated breaker) Auxiliary switch, 2 stages Auxiliary switch, 5 stages Manual trip button Trip label Spring for manual trip button Shunt trip device with coil Closing switch Shaft assembly (Manual Breaker only) order Ref. 43 and 43A together Link assembly Escutcheon, manual breaker (black) Escutcheon, electrically operated breaker (black) Escutcheon, electrically operated breaker (with handle) (black) Escutcheon, manual breaker (blue) Escutcheon, electrically operated breaker (blue) Escutcheon, electrically operated breaker (blue) with pistol grip handle Indicator Handle (black) Handle (gray) "X" relay (see Table A, page ) "Y" relay (see Table A, page ) Return spring, rear of escutcheon Stationary contacts, "X" relay / On early AK -2-5, AK-2-25 and Moving contacts, "X" relay \, AKF-2-25 With.. o suffix number Springs, moving contacts, "X" relay Stationary contacts, "X" relay / Molded moving arm, "X" relay (with moving contacts) \ all others Armature return spring, "X" relay. Operating coil, "X" relay (see Table A, page ) Cover, "X" relay ( On early AK -2-5, AK-2-25 and AKF Jumper, "X" relay f with no suffix number Coil for shunt trip device (see Table B, page 7) tinstantaneous undervoltage device, a-c (with coil) tinstantaneous undervoltage device, d-e (with coil) Time -delay undervoltage device, a-c Time -delay undervoltage device, d-e Coil for undervoltage device (see Table B, page 7) Static time delay, a-c or d-e (replaces complete time delay and volt device coil only) Spring, for undervoltage device :t:bell alarm device Terminal board, terminals Terminal board, 0 terminals Link and bushing for auxiliary switch Cover for auxiliary switch, stage Cover for auxiliary switch, 2 stages Cover for auxiliary switch, 5 stages Base for wall mounted, general purpose breaker Angle for wall mounted, general purpose breaker Terminal for wall mounted, general purpose breaker Terminal for wall mounted, general purpose breaker Cable clamp for wall mounted, general purpose breaker Cable clamp for wall mounted, general purpose breaker Maintenance handle t If at any time a breaker is to have added to it either shunt trip, undervoltage device, or bell alarm device, the order for the device must include the following information: () Complete nameplate reading of breaker involved. (2) Desired voltage rating of device, whether a-c or d-e, and if a -c, the frequency. (3) In the case of undervoltage devices, specify whether instantaneous or time delay. A On -, specify Cat. No. of "X" relay when ordering these parts. b. Order by circuit breaker Serial No. 4 www. ElectricalPartManuals. com

5 C 53 fig. 0. Cutoff switch (ref. 37) fig.. "X" contactor (ref. 47) fig.. Bell alarm device (ref. ) fig. 7. "y" relay (ref. 48) Fig. 2. Termmal board (ref. 2) 5 fig. 8. Shunt trip device (ref. 4) fig. 3. Auxiliary switch (ref. 38) fig J! 57 s,'"irj 58 Time delay undervoltage device (ref. 57) fig. 3A.. ElectricalPartManuals. co Static time delay m., 0 m :;a Q :;a n c: =i "' :;a m m :;a "' '>:! I ""... ""

6 GEF -449G NOTES FOR FIG. 4: Fig. 4. Manual (left) and electrical (right) front frame assemblies for Type AK-2-5 and -25 power circuit breakers (PHOTO ) () Should it become necessary to replace the complete front frame of the breaker, it is necessary that the order include complete nameplate reading of existing breaker. (2) f an existing manual breaker is to be converted to electrical operation, the order must include, in addition to Rating complete nameplate reading, a description of desired change and complete voltage and frequency rating of both closing and tripping circuits. TABLE A Catalog Number "X" Relay_ Relay Coil, only Relay Coil, only Complete, Ref. 47 (Ref. 53) Complete, Ref. 47 (Ref. 53) Volts Cycles tor fl. and Early - for Late -, and all -2 Breakers B445Pl 295B445P20 295B445P2 295B445P202 D-C B445P3 295B445P B445P4 295B445P B445P7 295B445P B445P0 295B445P B445P3 295B445P B445P2 295B445P B445P 295B445P20 ' 208 "I B445P9 295B445P B445Pl2 295B445P B445P7 295B445P B445P5 295B445P2 295B445P5 295B445P B445P8 295B445P B445Pll 295B445P2 fl B445P4 295B445P25 Original breaker had no suffix numeral or letter. Only complete relay furnished. B797Pl B797P2 B797P3 B797P4 B797P7 B797P0 B797P3 B797P Breakers B797P20 B797P202 B797P203 B797 P204 B797 P207 B797P20 B797P23 B797P B797P B797P9 B797Pl2 B797P7 B797P5 B797P5 B797P8 B797 Pll B797P4 B797P20 B797P209 B797P22 B797P27 B797P25 B797 P205 B797P208 B797P2 B797P24 "Y" Relay Complete (Ref. 48) 295B444Pl 295B444P2 295B444P3 295B444P4 295B444P7 295B444Pl0 295B444P B444Pll 295B444P5 295B444P8 295B444Pll 295B444Pl7 295B444P4 295B444P5 295B444P8 295B444Pll 295B444P4

7 Fig 5. Accessories for wall mounting (ref. 5,, 7, 8) Volts Rating Cycles Closing Solenoid Coil (Ref. 2) A77307 D-C 25 3A A A A A773G4 40 3A A A A A A A A A A A A A77309 TABLE B (PHOTO 80258) Fig.. Maintenance handle for electrically operated breakers not equipped with manual handles (ref. 9) Catalog Number Undervoltage Device Coil (Ref. 58) Shunt Trip Instantaneous Device or Old Design Coil Oil Dashpot Type Static Time (Ref. 5) Time Delay Delay Type h Tinput voltage to static timing unit (Fig. 3A) indicated. OEF

8 GEF-449G Without ground trip Fig. 7. Magnetic coil assembly Magnetic Sensor Coils - Assem bly (Fig 7) With ground trip Poles Rating Cat. No. Poles Rating Grd. Trip Range Cat. No. 8 www 2 45/225 07D7554G2 2 45/225 00/400 07D7554G 3 45/225 07D7554G3 3 45/225 00/400 07D7554G /00 07D7554G /00 00/400 07D7554G /00 07D7554G /00 00/400 07D7554G /00 300/200 07D7554G /00 300/200 07D7554Gll Fig. 8. Power supply unit Power Supply Units - Cat. No. 5C4508G0 Fig. 9. Power sensor unit. ElectricalPartManuals. com

9 With Ground Fault Protection 00 to 400 Amp Range Power Sensor Unit AK-25 (Fig. 9) With Instantaneous Trip With Instantaneous Trip Without Instantaneous 4 to 2X Range 4 to 2X Range Trip Without Short Time Delay 84L373G57 84L373G With Short Time Delay 2 to 5X Range 84L373G5 84L373G 84L373G0 4 to OX Range 84L373G54 84L373G9 84L373G3 Without Ground Fault Protection Without Short Time Delay 84L373G43 84L373G50 With Short Time Delay 2 to 5X Range 84L373G4 84L373G4 84L373G44 4 to lox Range 84L373G42 84L373G47 84L373G45 Fig. 20. Magnet trip device with mounting bracket Magnet Trip Device with Mounting Bracket - Cat. No. 084C0882 G4 Fig. 2. Ground sensor coil with neutral mounting Fig. 22. Power sensor kit Fourth Wire Grid Sensor Coils 00/400 Cat. No. 52C928Gl 300/200 Cat. No. 52C928G GEF-449G With Long Time Delay Without Long Time With Long Time Delay Without Long 80 to 30% Range Delay 80 to 30% Range Time Delay Power Sensor Test Kit- Cat. No. Without Instantaneous Trip L373G72 84L373G L373G48 84L373G49 002D252 GlO 9

10 GEF-449G 24 OUTS I DE POLE CONTACTS AND BARRIER 25 2 ' CE NTER POLE AND FIELD SWITCH MECH " 0----J Ill / 3 ---/ I I 4 ---/ " Fig. 2'3. Field switch mechanism and contact assemblies r---i""""c'r--- tttt== l7 NOTE: Parts listed below apply only to Types AKF-2-25 and AKF-2A-25. All other parts are identical to those used on Type AK Ref. Qty. Per No. Center Pole Catalog No. Description C997P9 Insulation *0 08C998Gl Moving contact C995P2 Link A33P8 Retaining ring 04 08C995P9 Pin A2279Pl Adjustable bushing A87P2 Bearing 07 08C995P0 Cam follower 08 08C99G Crossbar 09 08C995G3 Cam assembly, left 09 08C995G4 Cam assembly, right 0 08C995P Pivot 08C994P8 Lower stud insulation 2 08C995P3 Connector A33P9 Retaining ring *Recommended for stock for normal maintenance. 0 tnot shown. Ref. Qty. Per No. Center Pole Catalog No. Description A404P3 Pin 5 l08c994p7 Lower pivot * 29C257Gl stationary contact * 29C257G2 Stationary contact A28 stationary contact spring 8 29C283G4 Upper stud 9 08C997Pll Contact spacer right side 9 08C997P2 Contact spacer left side 20 29C280Pl Moving contact pivot pin 2 08C998P4 Spacer 22 29C258G3 Lower stud tl23 293B288Gl Arc quencher 24 08C997G3 Insulation *25 08C998G2 Moving contact C994P5 Spring

11 MEMORANDUM

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