ATO / ATS Circuit Breakers

Bussmann offers a large selection of automotive circuit breakers including both OEM-style and fuse-replacement devices.

Circuit breakers are available with three types of reset after an overcurrent event.

Type II - Modified Reset Type II circuit breakers will remain "tripped" by an internal resistor (in the OFF position) as long as the circuit is powered.

Type II breakers can be reset by turning the circuit off, or by turning the ignition switch to the OFF position. These devices are sometimes called "non-cycling breakers."


Type III Manual Reset Type III circuit breakers will remain tripped (in the OFF position) until an indicator button or lever is manually reset.

Some Type III breakers are available with a switch feature that allows the use of an external button to de-energize the circuit.