The 1610-21-20A is a miniaturized, single-pole thermal circuit breaker designed for automotive fuse block installation. It features a 20A current rating, a nominal voltage rating of DC 24V, and a press-to-reset button. This cycling trip-free device has a maximum voltage rating of DC 32V and is identifiable by its yellow housing cap. It operates reliably in a wide ambient temperature range from -40°C to +85°C. This circuit breaker is ideal for protecting extra low voltage wiring systems in various vehicles and marine craft.