The ABB 1SDA062087R1 is an under-voltage release (UVR) module for the T7 and T7M air circuit breaker frames, operating on a 24 VAC/DC control supply. It trips the breaker when the control voltage drops below a set threshold, providing undervoltage protection for downstream loads.
Classified under Voltage & Current Transducers in the Sensors top category, the UVR T7-T7M-X1 is a protection accessory, not a measurement transducer. It monitors the control voltage and mechanically releases the circuit breaker's stored-energy mechanism when the voltage falls outside the operating band.