Blue Sea Systems Bussman Series 187 Marine Rated Circuit Breaker (MRCB), 120 Amps - Surface Mount

Typically used in DC power systems in marine applications (as a main or branch circuit breaker), truck & Bus systems, RV systems, add-on protection for accessories, lift gates, etc. This unit is external ignition protected & weatherproof. Combines switching & circuit protection into a single device clear, single lever operation "trip free" design cannot be held "on" during fault current condition waterproof recessed mounting holes for clean appearance large clearance around terminal studs accept heavy Gauge wire lugs robust 5/16 M8 Terminals provide high torque connections large lever with vertical/horizontal orientation provides indication of trip status ignition protected - safe for installation aboard gasoline powered boats amperage: 120A maximum voltage: 48V DC circuit breaker type: thermally responsive bi-metal blade interrupt capacity (the fault current that a device, normally a fuse or circuit breaker is capable of breaking without damage.): 5000A @ 12V 3000A @ 24V 1500A @ 42V minimum operating temperature: -40° C maximum operating temperature: 85° C case material: thermoset polyester circuit breaker class: type III - switchable/manual reset - trip free

• The Series 187 marine rated circuit breaker features a Manual reset with switchable function and is single pole thermal type.
• "Trip free" design cannot be held "on" during fault Current condition
• Recessed mounting holes for clean appearance
• Combines switching and circuit protection into a single Device
• Waterproof (marine rated)