ABB Tmax XT Undervoltage Release for use with Tmax XT

The ABB under voltage release allows the circuit-breaker to open when the release is subject either to a power failure or a voltage drop. As prescribed in the standards, opening is guaranteed when the voltage is between 70% to 35% Un. After tripping, the circuit-breaker can be closed again if the voltage exceeds the 85% Un. When the under voltage release is not energized, neither the circuit-breaker or the main contacts can be closed. A remote-controlled emergency opening command can be generated by connecting an opening button to the UVR.

48 Vac/dc rated voltage (Ur)
Suitable for XT1, XT2, XT3, XT4
Extremely easy to fit
Standard: IEC 60947-2