R-K Electronics, Inc. Protection Relays & Systems ZVR-120A-FAB

The ZVR-120A-FAB is a zero speed switch designed to detect loss of motor speed by monitoring current through a shunt or AC voltage. It operates on a 100-120VAC supply and features a fixed 1-second time delay and fixed 35mV sensitivity. The output is a single-pole double-throw (SPDT) contact rated for 10 amps at 240VAC. Mounting is via Din rail or surface, with a plug-in terminal block. It accepts input signals up to 600V AC or DC with frequency response from DC to 400 Hz. Operating temperature range is 0°C to 65°C, storage from -40°C to 85°C. The device has 5% hysteresis at typical settings and weighs 8 oz. Physical dimensions are 5.875 inches for Din rail mounting, 5.313 inches for surface mounting.