Digital voltage and frequency relay for single-phase AC and DC systems

The VME420 is a powerful, all-in-one unit for single-phase AC and DC systems for 0 to 300 V monitoring over/undervoltage and over/underfrequency. Values are displayed and changed via a digital seven-segment display and menu. Values are displayed as true RMS values, and many different delays can be set.

The VME420 unit utilizes an auxiliary supply voltage to power itself. For the version that is powered off of the monitored line, please see the VME421H.

Key Features
Technical Data
Ordering Information