EOCR-i3M420 Overview

✔ Higher measurement accuracy (1% level)

✔ Harmonic distortion rate measurement (THD) and alarm output

✔ Built-in temperature/humidity sensor (separate specification)

✔ Protection functions: Overcurrent, undercurrent, phase loss, reverse phase, 

     unbalance, locked rotor during start-up and operation

✔ Thermal accumulation inverse time protection function

✔ 4~20mA analog output, runtime storage function, fault cause storage function, 

     restart limit function, fail-safe function

✔ Communication function: Modbus/RS-485

✔ Enhanced monitoring function — remote (400m) real-time monitoring: 

    Three-phase current and action reasons

✔ Bar graph display function

✔ Three-phase and single-phase usage function

✔ Three-phase current cycling display function

✔ For iFM420, protection function and actions will not be affected even if the 

    display window is removed

✔ Compliant with RoHS

✔ Password protection during setup

Overload Protection, In > Overcurrent Setting

Underload Protection, In < Undercurrent Setting

Locked Rotor During Start-up, In > 2...8 times overcurrent setting

Locked Rotor During Operation, In > 1.5...5 times overcurrent setting

Phase Loss Protection

Imbalance Protection, 10...50%

Reverse Phase Protection

[Us]Rated 

Input Voltage

Power Frequency

0.5...32 A (Inverse time, thermal accumulation inverse time)

0.5...80 A (Definite time)

35 mm DIN Rail

Panel Mounting

1 NC + 1 NO OL)

Manual reset

Automatic reset：0.5…1200 s

Electric reset：0…1 s

Start-up Delay Time: 0...200 seconds

Overcurrent Action Time: 0.2...30 seconds (Definite time)

Overcurrent Action Time: 1...30 class (Inverse time, thermal accumulation inverse time)

Undercurrent Action Time: 0.5...30 seconds

[Ue]Rated Operational 

Voltage

600 V AC 50...60 Hz Main Circuit Conforming to UL

690 V AC 50...60 Hz Main Circuit Conforming to CSA

690 V AC 50...60 Hz Main Circuit Conforming to IEC 60947-4-1

[Uimp]Rated Impulse 

Withstand Voltage

[Ith]Continuous 

Current

Control Circuit Cable: 2 x 1…1.5 mm², Flexible Cable with Terminal - M3

Control Circuit Cable: 2 x 1…1.5 mm², Flexible Cable without Terminal - M3

Control Circuit Cable: 1 x 1…2.5 mm², Flexible Cable with Terminal - M3

Control Circuit Cable: 1 x 1…2.5 mm², Flexible Cable without Terminal - M3

Main Circuit Terminal: 1 x 2.5…25 mm², Flexible Cable without Terminal - M6

Control Circuit: 0.8...1.2 N·m, Suitable for Cable, Diameter 4.7 mm

Main Circuit: 2.5 N·m, Suitable for Terminal Clamp, Diameter 11 mm

3DM2

Height

Width

Depth

Weight

Storage Temperature

4 gn panel mounting in compliance with IEC 60068-2-6

2 gn 35mm DIN rail mounting in compliance with IEC 60068-2-6

2 kV 50...60 Hz between enclosure and circuit in compliance with IEC 60255-5

1 kV 50...60 Hz between contacts in compliance with IEC 60255-5

2 kV 50...60 Hz between internal circuits in compliance with IEC 60255-5

Electromagnetic 

Compatibility

- Radiated RF immunity 10 V/m level 3 in accordance with IEC 61000-4-3

- Electrostatic discharge immunity 8 kV air, 6 kV contact in accordance with IEC 61000-4-2

- Transient overvoltage 2 kV in accordance with IEC 61000-4-4

- Conducted RF immunity 10 V in accordance with EN 61000-4-6

- Conducted RF emission class A in accordance with EN 55011

18 months warranty

The analog current (4-20mA) signal output is powered by a 4-wire (Active) system, so the input side must be connected to a 2-wire (Passive) system.

The analog current (4-20mA) signal output is powered by a 4-wire (Active) system, so the input side must be connected to a 2-wire (Passive) system.