Stops power surges from damaging your amps, protects your trolling motor from electrical damage. Compatible with all 12 and 24 volt systems. Mount on panel or firewall; unique push button reset can also be used as a kill switch. No more spending money on replacing fuses. High conductivity and craftsmanship, high temperature pressure resistance. Type: Car Circuit Breaker Operating type: Electronic Input voltage: 12-42 VDC Current: 300A Open circuit speed: Normal open circuit speed Installability: Easy to install, can be installed on any flat panel or wall Function: Over current protection, over voltage protection, current residual protection, overcharge protection Other Function: Includes waterproof protective plastic cover Car audio/video overload protector Automatic detection, manual recovery Operating temperature: -32°C to 82°C Size: 74x48x45mm Material: Plastic + Metal Color: Black Package Contents: 1 x Circuit Breaker Only the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture to differ slightly from the real thing. Measurement allowed error is +/- 1-3cm.