Welugnal FUS0011 Automotive Marine Circuit Breaker, 12V–48V DC, Manual Reset

For a boat or vehicle electrical setup that needs resettable circuit protection, the Welugnal FUS0011 is a surface-mount automotive and marine circuit breaker. It works across 12V–48V DC systems. Manual reset and a disconnect button make operation straightforward, while its compact housing fits surface-mount installation.

Key features

This thermal circuit breaker combines circuit protection with a manual reset. If the circuit opens, the red flag indicates the open position, push it back up until it clicks to reset. The red button also serves as a disconnect, and the breaker can be used as an on/off switch for an electric motor. That combination is useful when you want an accessible way to disconnect a motor and restore the circuit after it opens, rather than using a basic switch alone.

The housing is thermoplastic rated UL 94V-0, with IP67-grade splash and dust protection. Its interrupt capacity is 3,000A at 48 Vdc, and the listed operating temperature range is -32°C to 82°C. It has one pole, a 1/4-inch-28 stud size and a protective stud insulator. The product is identified as meeting S.A.E. J1625 and J1171, and UL1500 ignition-protection requirements.

How to use it

Mount the breaker on a suitable surface as part of the intended electrical installation. The red control provides a clear way to disconnect, while the red flag shows when the circuit is open. To reset it, push the flag upward until it clicks into the closed-circuit position. Follow the requirements for the specific motor and electrical system when selecting and installing circuit protection.

Usage tips

For a trolling motor or another electric motor application, position the breaker where its disconnect and reset controls are accessible after installation. The surface-mount format and included stud insulator support a practical setup around the battery connection, while the manual reset avoids treating the breaker as a simple switch alone. Its stated 12V–48V DC range makes it relevant to a range of marine and automotive electrical setups, match the system and installation to the breaker’s intended use.

Questions before you buy

How do you reset the breaker? Push the red flag upward until it clicks into the closed-circuit position. The flag points down and to the right when the circuit is open.

Can it also switch an electric motor off and on? Yes. It can be used as an on/off switch for an electric motor, and the red button acts as the disconnect.

What mounting and connection details should I plan for? It is designed for surface mounting and has a 1/4-inch-28 stud size. A protective stud insulator is included, so plan the installation around that connection format.

Buying verdict

The Welugnal FUS0011 suits buyers looking for a manual-reset thermal breaker for an automotive or marine motor setup. Its 12V–48V DC range, accessible disconnect and reset controls, and surface-mount design bring circuit protection and practical switching together in one component.