Voltage monitoring relays in 1 Phase


Voltage monitoring relay in 1P with adjustable levels with NEUTRAL

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Product detail


  • It serves to control supply voltage for appliances sensitive to supply tolerance, protection of the device against under/over voltage.
  • HRN-3x is band voltage relay, HRN-6x is over/under voltage relay
  • Monitors voltage in range AC 48 – 276 V.
  • Umax and Umin can be monitored independently
  • Voltage Umin adjusted as % of Umax.
  • 3-state indication – LEDs indicating normal state and 2 fault states.


  • Phase Type of monitored voltage: AC or DC
  • Monitored levels: undervoltage and/or overvoltage
  • Functions: WINDOW or HYSTERESIS
  • Monitoring range: 48-276 V
  • Output: 1or 2 CO, 16 A
  • Housing: 1 or 3-MODULE
  • Power supply: from monitored voltage or External
MIT Maximize Integrated Technology Co.,Ltd.

MIT Maximize Integrated Technology Co.,Ltd. is a global leader in power quality, industrial automation and power control product and service solutions. Products include circuit breakers, switchgear, UPS and DC power systems, power distribution units, motor controls, meters, sensors, relays and inverters. The principal markets for the Electrical Sector are industrial, institutional, government, utility, commercial, residential, information technology, telecommunications and original equipment manufacturer customers.