Product Details: The Littelfuse ACB Series Automatic Reset Circuit Breaker is the perfect wiring harness protector for DC automotive systems. This circuit breaker is designed to mount in ATO style fuse blocks and features an SAE type I type II modified reset. It is ideal for automotive headlamps and other applications that require a reliable and efficient circuit breaker. With its automatic reset feature, this circuit breaker is designed to provide superior protection and performance. It is also UL recognized and CSA certified for added safety and reliability. FleetPride is your First Click in Heavy Duty®.