This Circuit Breaker (4430.3977) manufactured by Schurter is a 1 Amp, 1 pole thermal circuit breaker with manual reset and is rated up to 12V AC/DC. It has a snap-in mounting, push-to-reset operation, and an overload and short-circuit protection feature. The 4430.3977 is quick and easy to install, and can be used in automotive, commercial machinery, and many other applications. Additionally, it has an electrical life of 3,000 cycles.