Blue Sea Systems Circuit Breaker 187 Surface 120A 7146Surface mount thermal circuit breaker combines switching & circuit protection into one device. Blue Sea 187 series surface mount circuit breaker 120 amps DC rating Bright yellow reset lever for visual identification of open circuit Ideal for main circuit protection of large size battery banks Combines switching and circuit protection into a single device Trip-free design cannot be held ON during fault current condition Not to be used where high inrush currents are expected Type III class – switchable/manual reset 48 volts DC maximum voltage 5000 amps interrupt capacity @ 12 volts DC 3000 amps interrupt capacity @ 24 volts DC 1500 amps interrupt capacity @ 42 volts DC 5/16”-18 terminal studs accepts up to 1/0 AWG heavy duty wire Waterproof for use in areas that may experience water spray Recessed mounting holes for clean appearance #10 (M5) mounting screw size 2.323 in. width x 3.439 in. height x 1.797 in. depth SAE J1171 ignition protected – safe for installation aboard gasoline powered boats CE marked IP66 – protected against ingress of dust and water from heavy seas