Series 18X Hi-Amp Circuit Breaker Series 187 …

1 Series 18X Hi-Amp Circuit BreakerSeries 187 Marine Rated Circuit Breaker (MRCB)SpecificationsSingle Pole Thermal Type BreakersApplications: Typically used in DC power systems in marine applications (as a main or branch Circuit Breaker ), truck and bus systems, RV systems, add-on protection for accessories, lift gates, etc. This unit is external ignition protected and : 25-150A, 48 VdcInterrupt Rating: Main Breaker Protection Interrupt Rating (5kA@ 12 Vdc). (Consult factory for higher voltage interrupt ratings.)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 94V0 thermoset plastic body. Cover and lever are UL-rated 94V0 thermoplasticMarking: Standard marking includes amp/volt ratings. Custom markings also availableTermination: 5/16-18 threaded studsTorque Rating: 75 in-lbs ( m) maxMounting Torque Rating: Panel or surface-mount options; 50 in-lbs ( N m) maxIngress Protection Rating: IP66 Features / Options: A manual reset Circuit Breaker with On-Off switch capabilityCompliances: ABYC E-11; CE; SAE J1171 (ignition protected)Consult factory for time characteristic Reset Circuit Breakers With Switch FunctionDimensions - mm(in)Part Numbering System(Dims.)

2 Shown are for reference only. Consult factory for latest prints)SpecificationsSingle Pole Thermal Type BreakersApplications: Typically used in auxiliary and accessory circuits in truck, bus , RVs and marine systems. Others include battery chargers and DC audio systems. Series 181, 184 & 185 are sealed for engine compartment and bilge area : 25-150A, 30 Vdc; 48 Vdc ( Series 184 & 185)Interrupt Rating: 3000A @ 30 VdcOperating Temperature Rating: 25 F ( 32 C) to 180 F (82 C)Storage Temperature Rating: 30 F ( 34 C) to 300 F (149 C)Materials: Black UL-rated 94V0 thermoset plastic. Thermoplastic elastomer stud insulators are provided on covered units with F-style (surface-mount) basesMarking: Standard marking includes amp ratings and part numbers. Custom markings also : 1/4-28 threaded studsTorque Rating: 50 in-lbs ( m) maxMounting Torque Rating: Panel or surface-mount options; 50 in-lbs ( m) max.

3 Threaded insert option has a max torque of 25 in-lbs ( m).Ingress Protection Rating: IP67 Features / Options: Series 184 & 185 have a unique reset mechanism which provides visual indication of tripped condition. Series 185 also features a push-to-trip optionCompliances: SAE J1625; ABYC E-11; CE; SAE J1171 (ignition protected)Auto, Manual & Switchable Reset Circuit BreakersDimensions - in(mm)(Dims. shown are for reference only. Consult factory for latest prints) ( ) ( ) ( ) ( ) ( ).66( ) *( ).40 ( ) ( )Stud ( ) (2)Reset lever(Shown inoperatingposition series184/185).26 ( ) dia. (2)Reset lever(Shown tripped) 1/4-28 StudsMolded coverMolded cover*Overall heights of Series 181 &183 Trip button ( Series 185).57( ) ( ).31 ( ).89 ( ) *( )Tamper ( ) ( ) ( ) ( )Surface MountPanel Mount600%500%500200100403020151050400%30 0%200%200%150%100%50%0%100%TIME VS. PERCENT OF RATED CURRENTTIME IN SECONDS% 0F RATED CURRENT% 0F RATED CURRENT-50 50 77 100 150 200 250 0 (-45 )(10 )(25 )(38 )(65 )(93 )(121 )(-18 )TEMPERATURE IN DEGREES F (TEMPERATURE IN DEGREES C )TEMPERATURE DERATING CURVESF lange mountgasket forthru-wallapplications(option 07)Part Numbering SystemSeries18181 Type I, 30V183 Type I*, 30V184 Type III, 42V185 Type III-PTT, 42 VRating025 25 amps030 30 amps035 35 amps040 40 amps050 50 amps060 60 amps070 70 amps080 80 amps090 90 amps100 100 amps110 110 amps120 120 amps135 135 amps150 150 ampsMounting F Surface MountP Panel MountTerminal Ship w/o nuts01 Sems nuts installed02 Sems nuts shipped bulk03 Stainless Steel Std.

4 Nuts & washers installed04 Stainless Steel Std. nuts & washers shipped bulk07 Flange gasket & Sems nuts installed(Panel Mount Only)08 Threaded insert and Sems nutsinstalled12 Stainless steel nuts and lockwashersinstalled13 Stainless steel Sems nut installedMarking0 Blank cover1 Standard Marking; Part Number,Amp Rating181, 184, 185 Series - Top Surface183 Series - Side SurfaceS Standard Ignition ProtectedMarking(Consult factory for special markings.)* 183 Available in PanelMount Only (Coverless)RMRCBBUSSTRIPOFFRESET48V DC MAX25 AIGNITION PROTECTEDWEATHERPROOF [ ] [ ]ON [.660] [ ] [ ] [ ]( ) ( ) ( ) ( ) ( .72) ( ) (.16) ( ) (.73) ( ) [ ] [ ]MRCB25A48V DC MAXWEATHERPROOFIGNITION PROTECTEDRESETBUSSOFFONP anel MountMounting TemplateFirewall MountSeries18 7187 Manual Reset - SwitchingStyle Circuit BreakerRating025 25 amps030 30 amps035 35 amps040 40 amps050 50 amps060 60 amps070 70 amps080 80 amps100 100 amps110 110 amps120 120 amps135 135 amps150 150 amps200 200 ampsMounting F Surface mountP Panel mountHardware 00 No hardware03 Stainless nuts & lockwashers - installedon studs04 Stainless nuts & lockwashers - suppliedbulk packedMarking1 Standard marking; Part Number,Amp Rating(Consult factory for special marking options.)

5 05101520304050100150200400600600%500%400 %300%200%100%Time vs Percent of Rated CurrentTime in seconds% OF RATED CURRENTT emperature Derating CurvesTemperature in Degrees OF RATED CURRENT-50 F0 F50 F77 F100 F150 F200 F250 F0%50%100%150%200%Cooper Bussmann Transportation Products Phone: Fax: Cooper Bussmann Transportation Products Phone: Fax: 71