Technical Data Parameter Specification Product Type Undervoltage Release (UVR) - Accessory Compatible Series NZM2 and NZM3 Molded Case Circuit Breakers Rated Control Supply Voltage (Us) 24 V AC Tripping Delay Typically 1 - 3 seconds (to avoid nuisance tripping on brief voltage dips). Function Automatically trips the breaker when voltage drops below the threshold. Prevents the breaker from being closed if the control voltage is absent or too low. Duty Cycle Continuous (Can be powered continuously unlike a shunt release). Mounting Factory-installed or field-mounted on the side of compatible NZM2/NZM3 breakers. Connection Screw terminals for control wiring. Standards IEC 60947-1, IEC 60947-2
