Series 12X Shortstop Circuit Breakers - Cooper …

1 Series 12X Shortstop Circuit BreakersSpecificationsSingle Pole Thermal Type BreakersApplications: Battery chargers, trucks, buses, RVs, trolling motors, etcRating: 5-50A, 14 Vdc; 28 Vdc ( Series 123, 124, & 125)Interrupt Rating: Main Circuit Protection: @ 12 Vdc ( Series 123 w/plastic cover);Branch Circuit Protection: @ 12 Vdc ( Series 121 & 124 -01 sealed & Series 123 w/plastic cover)Operating Temperature Rating: 40 F ( 40 C) to 185 F (85 C)Storage Temperature Rating: 40 F ( 40 C) to 260 F (125 C)Materials: Black UL-Rated thermoplastic body (thermoset for Type II body & buttons). Cover is grey thermoplastic or steel-Type l gold, Type ll silverMarking: Custom marking available. Consult factory for optionsTermination: #10-32 thread and quick-connect options availableTorque Rating: 24 in-lbs ( ) maxMounting Torque Rating: Plastic cover - 15 in-lbs ( ); Metal cover - 30 in-lbs ( )Ingress Protection Rating: IP66 On plastic cover version only (except for terminals)Compliances: SAE J553; SAE J1171 (ignition protected)Auto, Manual & Modified Reset Circuit BreakersTerminal "( ).

2 69"( ).69"( ).56"( ).37" ( ).56"( ).66"( ).66"( )Two 10-32 studs:.66" (AUX); .56" (BAT)ATwo 10-32 studs:.56" (AUX & BAT)BTwo 10-32 studs:.66" (AUX & BAT) "( )Two 10-32 studs(AUX & BAT)LCover & Bracket OptionsPart Numbering "( ) "( ) "( ) "( ) "( ) "( ) "( ) "( ) "( ) "( ).79"( ).79"( ).69"( ).69"( ).79"( ) "( ) "( ).64"( ).62"( ).69"( ).83"( )O BracketO BracketA BracketA BracketB BracketC BracketB BracketC " ( ).37" ( ).79"( ).38" ( )METAL COVERPLASTIC "( ).37" ( ).83"( )BATAUXBATAUX500%50020010040302015105040 0%300%200%100%TIME VS. PERCENT OF RATED CURRENTTIME IN SECONDS% 0F RATED CURRENT150%100%50%0%% 0F RATED CURRENT50 77 100 150 200 250 300 0 (10 )(25 )(38 ) (65 )(93 ) (121 ) (149 )(-18 )TEMPERATURE IN DEGREES F (TEMPERATURE IN DEGREES C )TEMPERATURE DERATING CURVES10 AMPS & BELOWTYPICAL CURVE15 AMPS & ABOVETYPICAL CURVE10 AMPS & BELOWTYPICAL CURVE15 AMPS & ABOVETYPICAL "( )E BracketSeries 123O Bracket "( ).

3 83"( ).62"( ).06"( ).12" ( )dia. " ( )Ref. (Typ)w/base attachedReset button*BATAUX( * Reset on BAT side)HA / HBHex Nut#10-32 Keps Lock Nut#10-32 Whiz Lock#10-32 Lock WasherWA / WBKA / KBSeries12121 Type I, 12 VDC122 Type II,12 VDC123 Type III,24 VDC124 Type I,24 VDC125 Type II,24 VDCT erminalA 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)** H One 10-32 (Bat), QC (Aux)L Two 10-32 studs; .37(Aux & Bat)Rating 05 5 amps08 8 amps10 10 amps12 12 amps15 15 amps20 20 amps25 25 amps30 30 amps35 35 amps40 40 amps50 50 ampsBracket0 No bracketA BracketB BracketC BracketE Bracket(plastic only)Mtg. Holes0 No bracket1 .140 .196 .237 dia.(metal only)4 .265 dia.

4 (plastic only)5 .228 dia.(plastic only)6 .221 dia.(metal only)Cover* M Metal*P Plastic*Options 01 Waterproof(metalcovers only)02 Splashproof(optional onmetal covers -add 02 suffix;std. on plasticcovers - omit02 suffix.)HardwareWA Whiz-lock nutassembledWB Whiz-locknut bulkHA Nut & lockwasherassembledHB Nut & lockwasher bulkKA Keps lock nutassembledKB Keps locknut bulk* Series 123 available in plastic cover only. Series 122 & 125 available in metal cover only. **40A maximum **30A maximumCircuit Protection12X Shortstop Circuit BreakersCooper Bussmann Transportation Products t 1 IPOF t 'BY t XXX DPPQFSCVTTNBOO DPN 70