The 1019985 is a UL 1077 supplementary protector from Phoenix Contact's TMC 7 series, providing reliable overcurrent protection for various devices. It features a snap-action mechanism that reduces contact wear for increased longevity and a trip-free design that enhances safety by preventing the circuit from being closed during an overcurrent event. The series is available in dual-rated (AC/DC) versions with multiple pole configurations and trip curves. These protectors are ideal for isolating problematic circuits in systems such as motor control circuits, lighting controls, and PLC I/Os, allowing the rest of the system to remain operational.