DPB51 is a multifunction 3-phase mains monitoring relay.

It operates on 3P and 3P+N systems, monitoring phase loss and phase sequence, overvoltage and undervoltage.

Power supply provided by the monitored mains.

Delay on alarm, up to 30s, for over/under voltage alarms.

For mounting on DIN-rail or back panel.

Benefits

• Wide voltages ranges. Working in systems from 208 to 480 VAC.

• Adjustable voltage levels and time delay. To allow a correct response to real alarm conditions.

• Output and status LED indication. For quick troubleshooting.

• Ultra-high harmonic immunity. For very noisy environments.

• High Compactness. 17.5 mm DIN rail housing.

Features

• Monitoring 3-phase mains with 3 wires (3P) or 4 wires (3P+N).

• Detection of the correct phase sequence and phase loss.

• Front dial adjustable overvoltage and undevoltage setpoints.

• Time delay.

• Changeover relay output