20 Amp current rated panel mount circuit breaker. Manual reset type 3 circuit breaker utilizes a push button that pops out when the breaker trips, and resets when the button is pushed back in. The 20 amp current rating is printed on the button for easy identification of the circuit's capacity. This circuit breaker is designed to be panel mounted so the bulk of the breaker and the wiring is hidden from view. Wires are attached to the breaker using the 1/4 inch male tabs located on the back. These circuit breakers are thermal in design, which means that the breaker heats up until the bi-metallic elements inside separate. It also means that the circuit breaker's amperage capacity can vary up to 30% depending on the ambient operating temperature. This is suitable for most circuits found in automotive and marine applications. For 12 volt and 24 volt DC circuit protection, but can also be used for 120 volt and 240 volt AC circuits. Breaker operating temperature is -23°C - 65°C (-10°F - 150°F ). RoHS compliant and meets UL standard 1077 and CSA C22.2 No. 5.1-M91a.