Current and voltage relay TRM-30M - 1-phase, 30 A, digital display

Product description

The TRM-30M is a single-phase digital relay designed to protect sensitive equipment against overcurrent, overvoltage, and undervoltage.
With the device, the current limit and delay can be precisely set and the measured voltage and current values are displayed on a two-line display. A current transformer is included.

Main Features

• Overload protection: adjustable current from 0.5 ... 30 A

• Overvoltage protection: activation at voltage > 250 V (fixed)

• Undervoltage protection: activation at voltage < 150 V (fixed)

• Voltage hysteresis: 5 V

• Voltage fault delay: 2 s

• Voltage fault reset: 2 s

• Clear two-line LED display:

  • Upper line - voltage and overcurrent

  • Lower line - delay time and current

• LED status indication "OUT

Operating principle

• When the current is connected, the set overcurrent value and delay time are displayed.

• The device monitors the voltage between the phase and neutral conductor and the current drawn from the mains.

• If the set values are exceeded, the relay switches to a fault state:

  • NO contact open, NC contact closed

  • The LED "OUT" turns off

  • The associated display is flashing

Protection functions

• Overload (overcurrent): when the set current and time delay are exceeded

• Overvoltage: at a voltage above 250 V (automatic return after falling below 245 V)

• Undervoltage: at a voltage below 150 V (automatic return after rising above 155 V)

Signaling

• Upper display flashes: high or low voltage fault

• Lower display flashes: high current fault

• LED OUT: lit during normal operation

Relay status

Usage

• Protection of single-phase sensitive equipment (motors, heating, lighting)

• Current and voltage monitoring in industrial and household applications

• Accurate limit and time delay settings for reliable operation