[Application] Ideal For Harsh Environments, suitable for use on auxiliary DC electrical systems. Ideal for use in harsh environments, like motorsport, to provide protection in the event of current overload or short circuit. Switchable surface mount circuit breakers typically found in auxilliary and accessory circuits in trucks, buses, motorhomes & marine systems. [Water resistant housing] Sealed, waterproof unit suitable for use in engine compartments and Bilge area's. [High-current circuit breaker] Using bimetal structures, when the circuit is overloaded, quickly power protection. Widely used in special vehicles, off-road vehicles winch, yachts and ships electrical control. [Connection Stud] Connection Stud Size - M6 x 2 - Nuts supplied with integral lock washers to prevent loosening due to vibration. [Manual power off] We need to disconnect the circuit when refitting, directly press the elliptical red button on the fuse, then the long handle will automatically pop up to cut off the power. Press the long handle back to the original position to form a passage.