The Blue Sea 187 Series 40 A is a thermal (bimetal) circuit breaker that combines switching and protection functions in a single unit.
It trips on overcurrent, resets manually, and also serves as an on/off switch; its trip-free design keeps the circuit open even if the handle is held down. Waterproof to IP66 and ignition-protected to SAE J1171 (suitable for gasoline-powered boats), it is a marine-grade 12/24 V DC (max. 48 V) unit with panel mount.
Our expert team is ready to help you find the right fuse, circuit breaker, and distribution solution for your boat's DC system.Feel free to reach out with any questions.
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