the only controlled copy of this bif document is the electronic read-only version located on the bussmann network drive. all ot her copies of this bif document are by definition uncontrolled. this bulletin is intended to clearly present comprehensive product data an d provide technical information that will help the end user with design applications. bussmann reserves the right, without notice, to cha nge design or construction of any products and to discontinue or limit distribution of any products. bussmann also reserves the right to c hange or update, without notice, any technical information contained in this bulletin. once a product has been selected, it should be te sted by the user in all possible applications. shortstop series 120 auto, manual & modified reset circuit protectors form no. 120 shortstop page 1 of 1 bif document: 2067 bussmann sb98107 12-16-98 .69" (17.5) .69" (17.5) .69" (17.5) .56" (14.2) .56" (14.2) .54" (13.7) .37" (9.4) .56" (14.2) .66" (16.8) .66" (16.8) .41" (10.3) .41" (10.3) two 10-32 studs: .66" (aux); .56" (bat) a two 10-32 studs: .56" (aux & bat) b two 10-32 studs: .66" (aux & bat) c two .25" q.c. (aux & bat) d .41" (10.3) .84" (21.4) .84" (21.4) .56" (14.2) .41" (10.3) .69" (17.5) .69" (17.5) .99" (25.2) double .25" q.c. (aux); one 10-32 stud (bat) h double .25" q.c. (aux); single .25" q.c. (bat) j one .25" q.c. (aux); one 10-32 stud (bat) e .99" (25.2) .30" (7.7) two .25" q.c. (aux & bat) perpendicular orientation two 10-32 studs (aux & bat) k l specifications single pole thermal type breakers ratings: 8a to 50a; 12 vdc; 24 vdc. operating temperature: ?0? (?3?) to 150? (65?). storage temperature: ?0? (?9?) to 200? (93?). applications: battery chargers, trucks, buses, rv s, trolling motors, etc. approvals: complies with sae standard j553. 600% 500% 500 200 100 40 30 20 15 10 5 0 400% 300% 200% 200% 150% 100% 50% 0% 100% time vs. percent of rated current time in seconds % 0f rated current % 0f rated current -50 50 77 100 150 200 250 0 temperature in degrees f. temperature derating curves 1.24" (31.5) 1.27" (32.3) 1.27" (32.3) 1.24" (31.5) 1.24" (31.5) 1.24" (31.5) 1.27" (32.2) 1.27" (32.2) 1.56" (39.6) 1.56" (39.6) 1.56" (39.6) .79" (20.1) .79" (20.1) .69" (17.5) .69" (17.5) .79" (20.1) 1.56" (39.6) 1.56" (39.6) .64" (16.3) .62" (15.7) .69" (17.5) .83" (21.1) o bracket o bracket a bracket a bracket b bracket c bracket e bracket series 123 o bracket w/reset b bracket c bracket .38" (9.6) .37" (9.4) .79" (20.1) .38" (9.6) metal cover plastic cover 1.27" (32.3) .83" (21.1) .62" (15.7) .83" (21.1) .37" (9.4) .83" (21.1) .06" (1.5) .12" (3.0) dia. boss .62" (15.7) ref. (typ) w/base attached reset button cover & bracket options terminal options part numbering system series ooo 12 121 ?auto reset 12 vdc 122 ?modified 12 vdc 123 ?manual 24 vdc 115 vac 124 ?auto 24 vdc 125 ?modified 24 vdc terminal o a two 10-32 studs; .66 (aux), .56 (bat) b two 10-32 studs; .56 (aux & bat) c ?two 10-32 studs; .66 (aux & bat) ***d ?two .250 qc; (aux & bat) ***e ?one .250 qc (aux); one 10-32 stud (bat) ** h ?one 10-32 stud .56 (bat), double .250 qc (aux) ***j ?single .250 qc (bat) double .250 qc (aux) ***k two .250 qc (aux & bat) l two 10-32 studs; .37 (aux & bat) rating oo 08 ?8 amps 10 ?10 amps 12 ?12 amps 15 ?15 amps 20 ?20 amps 25 ?25 amps 30 ?30 amps 35 ?35 amps 40 ?40 amps 50 ?50 amps bracket o o ?no bracket a bracket b bracket c ?bracket e ?bracket (plastic only) mtg. holes o 0 ?no bracket 1 ?.140 dia. 2 ?.196 dia. 3 ?.237 dia. (metal only) 4 ?.265 dia. (plastic only) 5 ?.228 dia. (plastic only) 6 ?.221 dia. (metal only) cover* o m metal p plastic options oo 01 ?waterproof (metal covers only) 02 ?splashproof (optional on metal covers - add 02 suffix; std. on plastic covers - omit 02 suffix.) hardware oo wa ?whiz-lock nut assembled wb ?whiz-lock nut bulk un- assembled ha ?nut & lock washer assembled hb ?nut & lock washer bulk unassembled ka ?keps lock nut assembled kb ?keps lock nut bulk unassembled * series 123 available in plastic cover only. series 122 & 125 available in metal cover only. ** 40a maximum *** 30a maximum rev. a sb98107 12-16-98
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