VMP Series Over/Undervoltage

Plug-in

12-120V

12-120V

240-480V

240-480V

Features
  • Monitors AC single phase and DC voltages
  • True RMS Sensing ensures more accurate sensing
  • Wide range of user-adjustable voltage pick-up and drop-out settings
  • Fixed time delay on drop-out of 0.5 Seconds
  • Pilot Duty Rating
  • LED indicates output relay status
Enclosure Style Plug-in case utilizing industry-standard 8 pin octal sockets
Configuration/
Contact Rating
  • DPDT (12-240V relays) and SPDT (240-480V relays)
  • (All but VMP240AX) 10A @ 240V AC, 7A @ 30V DC, 1/4HP @ 120/240V AC, C300
  • (VMP240AX) 5A @ 277V AC/30V DC, 1/3 HP @ 120/240V AC, B300
Approvals c-ur-us.jpgCE_Logo.gif  
Technical Documentation

Operation:

Over/Under Voltage Relays 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 below the preset value.

Adjust the pick-up voltage setting (Umax) between the full range as shown on the product nameplate. The drop-out voltage setting (Umin) is fixed at 95% of the pick-up setting. The relay energizes (and the LED is Red) when the monitored voltage is above the pick-up setting for a period longer than the fixed pick-up time delay of 0.5 seconds. The relay de-energizes (and the LED is Green) when the monitored voltage is below the drop-out setting for a period longer than the drop-out time delay (t) of 0.5 seconds.

voltage monitor
Watch the Voltage Monitor Relay Video

Macromatic's Voltage Monitor Relays Knowledge Base contains general and technical industry articles to help you learn more about Voltage Monitor Relays.

12-120V

12-120V

240-480V

240-480V

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