MACROMATIC CONTROLS VMP012D Voltage Monitoring Relay, VM Series, DPDT, 10A, Socket, 240VAC, Quick Connect
VM Series Voltage Monitor Relays, 10 A Contact Rating
* Monitors AC single phase and DC voltages
* Wide range of user-adjustable pick-up and drop-out settings
* Fixed time delay on drop-out of 500 ms
* LED indicates output relay status
* Compact plug-in case utilizing industry standard 8 pin octal socket
It provide protection to equipment where either an over or under voltage condition is potentially damaging. They are designed to operate when the operating voltage reaches a preset value and drop-out when the operating voltage drops to a level.