About this item#1 Function: This circuit breaker can protect the amplifier from being damaged by the over-load current or voltage. Meanwhile, the power supply can also be protected to avoid battery crack and explosion caused by short circuit. #2 Specification: Voltage 12-48V DC, compatible with all 12V/48V Systems. Ambient temperature: -32 c to 82 c (-25 f to 180 f) #3 Manual Reset Circuit Breaker, Use in place of an inline fuse holder, the unique push button reset can also be used as a Kill Switch. #4 Protects your trolling motor from electrical damage, prevents excessive current and stops power surges from damaging Amps. #5 Application: Suitable for car audio/video system, boat, trucks, buses, RV's, ATV winches, marine and DC sound amplifier system overload protection. Hamolar 20~150Amp Circuit Breaker with Switch Manual Reset - Rated current(Style-A): 20A / 30A / 40A / 50A / 60A / 80A / 100A / 125A - Rated current(Style-B): 30A / 40A / 50A / 60A / 80A / 100A / 150A / 200A / 250A / 300A - Rated voltage: 12 to 48V DC (Maximum) - Manual Reset Circuit Breaker - Red manual reset button - Ambient temperature: -32 C to 82 C (-25 F to 180 F) _x000D_