Ordering Instructions RENEWAL PARTS 1. Always specify the complete nameplate data of the relay, including complete model of relay. 2. Specify the quantity, catalog number (if listed), reference number (if listed) description, and this bulletin number.. Standard hardware, such as screws, bolts, nuts, washers, etc., is not listed in this bulletin. Such items should be purchased locally. 4. For prices, refer to the nearest office of the General Electric Company. Data is subject to change without notice. GEF-448A Supersedes GEF-448 Type AM-1.8-750-5,- Magne-Biast Circuit Breakers Note: The ML-1 operating mechanism is not included in this publication. Refer to GEF-479. GENERAL. ELECTRIC
GEF-448 TYPE AM-1.8 MAGNE-BLAST CIRCUIT BREAKER (1200amp) Fig. 1. Breaker, Type AM-1.8-750 -5 and - o:==-:": I II t II I 1 I 1HH-.-Jih L.J l j LJ LJ (2000amp} Hinge pin assembly (Ref 8) Cross section views of breaker and hinge pin NOTE: For recommended parts for normal maintenance, refer to page 5. Ref. Type 1 All 2 All All 4 All 5 H,L,F 5 HB,LB,FB All 7 All 8 All 9 All ---7,.-.1!--- TYPE AM-1. 8-750 -5 and - BREAKER (Refer to Fig. 1) Catalog Number for Type AM1. 8-750 -5 and - 1200 Amp 2000 Amp Req'd..---- 5 ---(81, ) 07-25C017G00 07-25C017G00 Box barrier Fig. 802B074G001 802B074G001 Vertical barrier 12C278P004 12C278P005 Lower horizontal barrier 258C014P01 258C014P02 Upper horizontal barrier 81B0708G001 281B0708G001 Operating rod assembly 281B0708G007 281B0708G007 Operating rod assembly 2B0292P002 2B0292P002 Booster cylinder 8450012G00 958C08G00 Front bushing 898B0282G001 898B0282G002 Hinge assembly 88C0589P001 88C0589P001 Connection bar 2 /
Assembly complete (Ref. 20) Front view View with side removed Fig. 2. Interrupter assembly TYPE AM-1.8 MAGNE-BLAST CIRCUIT BREAKER INTERRUPTER ASSEMBLY (Refer to Fig. 2) Catalog Number for Ref. Type AM1. 8-750 -5 and - 20 07-21X0524G004 21 24B0100G021 22 12C2721G001 2 12C2721G002 24 12C278P001 25 12C278P002 2 12C2728P015 27 12C2721G009 *28 12C2721G010 29 14C577G001 *0 14C577G002 1 14C577G00 *2 14C577G004 12C27G01 *4 12C27G014 5 14C577G007 * 14C577G008 7 14C577G005 *8 14C577G00 9 108B5521G005 40 108B5521G004 41 414A0102POOB *42 17A91P002 4 92C0750P009 44 92C0750P010 45 92C0750P00 4 92C0750P002 *47 152C59P001 48 152C59P002 49 25C01P009 50 108B5520P001 *51 12C2745P011 52 12C2745P012 5 152C 590 5G002 54 152C5905G00 55 152C5905G007 5 152C5905G010 57 152C5905G012 58 152C5905G01 59 94D018G005 0 94D018G00 1 94D018G007 2 94D018G00 94D018G001 4 94D018G002 5 94D018G004 14C52G002 *7 14C52G00 8 152C5907P00 *9 152C5907P007 70 14C595G00 71 14C595G004 72 * Not illustrated 114C544G00 Req'd 15 18 GEF-448 Interrupter assembly, complete Interrupter sides Upper support Lower support Side brace Rear brace Lower brace Pole piece, left Pole piece, right Pole piece, upper, left Pole piece, upper, ri ht Pole piece, upper, left Pole piece, upper, ri ht Pole piece, lower, left Pole piece, lower, right Pole piece, lower, left Pole piece, lower, right Pole piece, lower, left Pole piece, lower, right Core assembly, 2 1/1 in. Core assembly, 1/1 in. stud Bushing Interrupter support, upper, left Interrupter support, upper, right Block Dust shield Coil support, upper, right Coil support, upper, left Upper runner insulation Insulation plate Coil support, lower, right Coil support, Coil, upper Coil, upper Coil, upper Coil, lower Coil, lower Coil, lower Runner, upper Runner, upper lower, left Runner, upper Lower runner barrier, left Lower runner barrier, right Lower runner shield, left Lower runner shield, right Throat cooler assembly, right Throat cooler assembly, left Muffler ass mbly
GENERAL ELECTRIC COMPANY BREAKER PLANT OPERATION PHILADELPHIA, PA 19142 11-84 (1 000) GENERAL. ELECTRIC
Hl'f. TYPE AM-1.8 MAGNE-BLAST CIRCUIT BREAKER b--- 84 8 Fig.. Rear bushing assembly (Ref. 80) Type HEAR BUSHING ASSEMBLY (Refer to Fig. and 4) Catalog Number for Type AM1. 8-750 -5 and - 94 95 105 102 10 104 10 101 Fig. 4. Contact assembly (Ref. 100) 1200 Amp 2000 Amp Req'ct RO II. L. F 07-21 X044G047 07-21X044G048 HPar bushin assembly HO n 21X044G049 21X044G050 Hear hushing as!embly HI All R45D0124G00 95BC084G005 Bush in 82 All Glf!C044P017 19C044P007 lnt Prrupte r bupport GEF-448 8 All 20RAR017G001 20BAB017G001 Flexible connector, lon, left 84 All 20RAR017G002 208A8017G002 Flexible connector, long, ri ht H5 All 20RAB017G00 20BAR017G00 Flexible connector, short, left flfj All 20RAB017G004 20BAB017G004 Flexible connector, short, right fl7 All 21X044G02 21X044G02 Stationary arcin contact 88 All 208AH01G002 208AB01G002 Throat barrier assembly *89 All 0114450H7 P004 04450B7P004 Buff<>r *90 All Q(j55724 P002 055724 1'002 Clamp for buffer 91 All 12C2722P005 12C2722P004 Baffle 092 c. N12 P2542B N12P2542n 18 Spring guide g2 B N121'2542B N12P2542n 24 Sprin guide.9 c. 92C077RP007 92C077BP007 Spring retainer gj B fl2rc07fl2 POO 5 82BC07B2P005 Sprin retainer 94 c. 121A5%4P001 121 A5%4 POOl lfl Primary contact fin er spring 94 B 121!\ri%41'001 121A594P001 24 Primary contact fin er spring 94A c. 0094P005 0094P005 18 Spacer 94A B 0094P005 0094P005 24 Spacer 95 c. 114C5B2 P002 114C582 P002 18 Primary contad finger 95 B 114C5B2 P002 114C582P002 24 Primary contact finger *Not illustrated A All except breakers with "B" in suffix CONTACT ASSEMBLY (Refer to Fi. 4) ltd. Catalog Number for Type AM1. 8-750 -5 and - Type 1200 Amp 2000 Amp Req'd 100 A 07-21X04G15 07-21X04G157 Contact assembly 100 B 21X04G158 21X04G159 Contact assembly 101 All 227A50G001 227 A50G001 Movable arcing contact 102!:> 114C582 1'004 114C5R2P004 Movable primary contact 10 n 14A914P00 17 A91 4 P00 Movable primary contact 104 B 17A914P004 17A914P004 Movable primary contact 105 All 25RC0P007 258C0P007 Contact arm 105 All -- -- -- ------ 25BC0P00 Contact arm 10 All 21X04G094 21X04G094 Tube and piston assembly A All except breakers with "B" in suffix 4
GEF-448 TYPE AM-1.8 MAGNE-BLAST CIRCUIT BREAKER RECOM;"viENDED PARTS FOR NOR!'viAL MAINTENANCE Fig. Ref. Catalog Number for Type AM1. 8-750 -5 and - Type 1200 Amp 2000 Amp Req'd. 1 All 07-2B0292P002 07-2B0292P002 Booster cylinder 1 5 H.L.F 15B790G001 15B 790G001 Operating rod assembly 1 5 HB, LB. FB 15B790G007 15B790G007 Operating rod assembly 8 All 208A8017G001 208A8017G001 Flexible connector. long, left 84 All 208A8017G002 208A8017G002 Flexible connector. long. right 85 All 208A8017G00 208A801 7G00 Flexible connector. short, left 8 All 208A8017G004 208A8017G004 Flexible connector, short, right 88 All 208A801G002 208A801G002 Throat barrier assembly 87 All 21X044G02 21X044G02 Stationary arcing contact 4 121A594P001 121A594P001 18 Primary contact finger spring 4 B 121A594P001 121A594P001 24 Primary contact finger spring 4 *94A 0094P005 0094P005 18 Spacer 94 94 4 *94A B 0094P005 0094P005-24 Spacer 4 95 114C582P002 114C582P002 18 Primary contact finger 4 95 B 114C5 82P002 114C582P002 24 Primary contact finger 4 102 114C582P004 114C582P004 Movable primary contact 4 10 B 17A914P00 17A914P00 Movable primary contact 4 104 B 17A914P004 17A914P004 Movable primary contact 4 101 All 227 A50G001 227A50G001 Movable arcing contact 4 10 All 21X04G094 21X04G094 Tube and piston assembly 2 70 All 14C595G00 14C595G00 Throat cooler assembly, right 2 71 All 14C595G004 14C595G004 Throat cooler assembly. left 2 All 14C52G002 14C52G002 Lower runner barrier. right 2 *7 All 14C52G00 14C52G00 Lower runner barrier, left 2 49 All 25C01P009 25C01P009 Upper runner insulation 2 8 All 152C5907P00 152C5907P00 Lower runner shield, left 2 *9 All 152C5907P007 152C5907P007 Lower runner shield, right 2 50 All 108B5520P001 108B5520P001 Insulation plate *Not illustrated. All except breakers with"b" in suffix. 5