Suitable for Car audio/video system, Boat, Trucks, Buses, RV's, ATV winches, Marine and DC sound amplifier system overload protection.How to work?1) When the system is over power or short circuit, the breaker will cut and save your equipment.2) No need to replace the fuses, the system can be reset by a simple switch which also offers safe and instant system shut down.Feature:High current circuit breaker, to protect to your system.Prevents excessive current and stops power surges from damaging Amps.Water resistant housing, splash & dust proof.Unique push button Reset can also be used as a kill switch.Self-test, manual control and easy to operate with manual reset arm.Surface mount: can be mounted on panel or firewall.Manual reset, continue to use, very convenient.Models: 30A,40A, 50A, 80A, 100A, 150A, 200A, 250A, 300A.Easy installation, with waterproof mount cover protective the 14-28 threaded stud to be isolated.Specifications:Power Rating: 100 AVoltage: DC 12V - 36V (Max)Size: 72mm x 46mm x 31mmOperating Temperature: -32 c to 82 c (-25 f to 180 f)Storage Temperature: -34 c to 149 c (-30 f to 300f)Surface Mount, protective stud insulator includedRed manual reset buttonPackage Includes:1 x 100A Circuit BreakerNote:1. Please correctly push the button to avoid damage the Circuit Breaker.2. Please order and use the Circuit Breaker with right work temperature, to avoid it is too heat and stop work.