Bender GmbH SUD472 Voltage Relay

The Bender SUD472 voltage relay is a three-phase voltage monitoring device designed to protect electrical systems by signaling when the line voltage falls below or rises above preset limits, preventing equipment damage from undervoltage or overvoltage conditions. The B933702 variant includes a normally open alarm contact that signals when the monitored voltage leaves its acceptable range, enabling straightforward interlocking, alarm signaling, or switching of auxiliary devices in control panels. Used in industrial power distribution to protect motors, transformers, and other critical loads, the SUD472 family is designed to monitor three-phase networks reliably; for exact voltage thresholds, timing characteristics, installation notes, and wiring practices, consult the SUD472 datasheet and the specific B933702 documentation from Bender.