ABB Tmax XT Undervoltage Release for use with XT1, XT4

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.

220 to 240 Vac and 220 to 250 VDC rated voltage (Ur)
Suitable for XT1, XT2, XT3, XT4
Extremely easy to fit
Standard: IEC 60947-2