Circuit Protection Protective rubber caps prevent unnecessary short circuits. ^ This car circuit breaker is used in protecting of car audio and video system, prevent power surges from damaging your equipment. Prevent car currents from being too high and damage automotive electronic equipment. ^ Waterproof Design Unique button reset can also be used as a close switch. ^ High-technology waterproof case, practical and durable in use.Ideal for use in harsh environments, like motorsport, to provide protection in the event of current overload or short circuit. ^ Universal Widely used for Motor Car Marine Boat with 12-48V voltage input replacement. ^ Switchable surface mount circuit breakers typically found in auxilliary and accessory circuits in trucks, buses, motorhomes & marine systems. ^ Please kindly confirm your original circuit type before purchasing. ^ Easy to Use Manual reset arm is easy to operate, automatic testing and manual coverage. ^ Simple and convenient to be installed on the panel or firewall. ^ Guarantee Please feel free to contact us if you have any question. We will give you a satisfied reply in 24 hours. ^ Product Description ^ MOTTDAM Car Circuit Breaker ^ Product Function ^ Suitable for a wide range of DC system voltages from 12V to 48V. Safe,Designed to protect the system from over-current as a result of high power draw, short-circuits, wiring mistakes, equipment faults or any other high current event.With mount cover protective the stud to be isolated, splash&dust proof. ^ Product Introduction ^ Product Size ^ Product size is 8.5CMX4.5CM ^ Manual Rest Design ^ Visible reset lever shows open condition, unique push button reset Can also be used as a kill switch. Button on circuit breaker can act as a master disconnect for circuits. ^ IP67 Waterproof ^ The screw inside is made of pure copper, Housing made from thermal plastic UL rated 94V0. ^ It is also water resistant (IP67 rated) and UL1500 Ignition Protect.