The 1019995 is a supplementary circuit breaker from Phoenix Contact's TMC 7 series, engineered for device protection in systems requiring reliable overcurrent protection. This device features a snap-action mechanism to increase longevity and a trip-free design that enhances safety by preventing the circuit from being closed during an overcurrent event. The series offers dual-rated (AC/DC) versions, multiple pole configurations, and various trip curves. Common applications include motor control circuits, lighting controls, PLCs, and other sensitive equipment where isolating problematic circuits is critical to maintain overall system operation.