EOCR-iFDM Overview

✔ Built-in MCU (Microcontroller Unit) enhances measurement accuracy (1% level)

✔ Improved measurement accuracy (1% level)

✔ Harmonic Distortion Measurement (THD) and Alarm Output

✔ Built-in Temperature/Humidity Sensor (optional specification)

✔ Protection functions: Overcurrent, Undercurrent, Phase Loss, Phase Reversal, 

Phase Imbalance, Locked Rotor during Start, Locked Rotor during Run

✔ Thermal Accumulative Inverse Time Protection

✔ Alarm function, Runtime Recording, Fault Cause Recording, Restart Limitation, 

Fail-Safe Function

✔ Communication function: Modbus/RS-485

✔ Enhanced Monitoring: Three-phase Current, Alarm and Action Reasons

✔ Bar Graph Display Function

✔ Applicable for both three-phase and single-phase systems

✔ Three-phase current cycling display function

✔ For iFDM, protection and operation remain unaffected even if the 

display panel is removed.

✔ UL, CCC certified, RoHS compliant

✔ Password protection for settings

Overload Protection: In > Overcurrent Setting

Underload Protection: In < Undercurrent Setting

Locked Rotor during Start: In > 2...8 times Overcurrent Setting

Locked Rotor during Run: In > 1.5...5 times Overcurrent Setting

Phase Loss Protection

Imbalance Protection: 10...50%

Phase Reversal Protection

[Us] 

Rated Input Voltage

Communication

0.5...32 A (Inverse Time, Thermal Accumulative Inverse Time)

0.5...80 A (Definite Time)

35 mm DIN Rail

Panel Mounting

1 NC + 1 NO OL)

1 NO AL/UL/TO)

Manual reset

Electric reset：0.5…1200 秒

Automatic reset：0…1 秒

Start Delay Time: 0...200 seconds

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

Overcurrent Action Time: 1...30 levels (Inverse Time, Thermal Accumulative 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

Permissible 

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

Tightening 

Torque

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

iFDM

Height

Width

Depth

Weight

torage Temperature

Vibration 

Resistance

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

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

Dielectric 

Strength

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