Industrial CR305X320B Molded Case Circuit Breaker

ABB CR305X320B is a push-button Start/Stop control kit designed for ABB CR-series contactors used in motor-control circuits in industrial panels. Sized for CR contactors in the 3–4 range, this kit provides a local manual control interface with a Start button to energize the circuit and a Stop button to de-energize it, facilitating straightforward start/stop operation of connected motors. The assembly is described in vendor listings as a NEMA 1 control kit, suitable for indoor, non-hazardous environments, and is intended to mount on or alongside the associated CR-series contactor. By enabling local control close to the equipment, the CR305X320B supports simple, reliable operation of pumps, conveyors, fans, and other motor-driven equipment where a dedicated Start/Stop control is required. When selecting this kit, verify compatibility with your specific CR series contactor size and the coil voltage in your control circuit, and ensure proper wiring and panel clearance per applicable electrical codes.