Features: brand new and high quality Wide applications, battery chargers, stereos, for cars, trucks, buses, ships, recreational vehicles, trailer motors, etc, bring your life more convenience. With protective cover avoid electrical shorts and corrosion, durable and waterproof, can protect the internal circuit breaker well. The car circuit breaker is equipped with a plastic for shell, which can effectively protect from corrosion, circuit breaker boot insulates your circuit from shorting out by protecting it from the elements in power leads and automotive applications, and the insulating plastic can reduce the risk of electric shock for users. Fuse with thermal automatic reset feature, circuit breaker allows you to use electrical appliances safely and securely. It offers power protected when circuit is overloaded/ shorting by this over-current circuit breaker. High and low temperature resistance. Circuit breaker is plastic,can be Mounted in any Orientation. Specifications: Material:Thermoplastic for Shell Size:Approx.4x2.1x4cm/1.57x0.94x1.57inches Rated voltage: 12/24V Rated current: 20A/30A/40A/50A (5-50A available) Suitable for 6-28VDC applications Manual reset button (on the Bat. side) Plastic body and mounting bracket #10-32 Bolt length .37in (9.4mm); bolt spacing .69in (17.5mm) Wing mounting hole spacing: 1.56in (39.6mm) Interruption rating: 2.5KA @ 12Vdc Working temperature: -40F-185F (-40C-85C) Torque rating: 15in-lb IP66 waterproof: IP66 on plastic cover(except for terminal) Note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thanks for your understandings. Package includes: 1 Set Circuit Breaker