EOCR-3MZ2 Overview

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

✔ High-frequency component filtering - Function to measure leakage current by 

     eliminating high-frequency components and pulse noise

✔ Harmonic Distortion Rate Measurement (THD) and Alarm Output

✔ Protection Functions: Overcurrent, Undercurrent, Phase Loss, Reverse Phase,  Ground 

     Fault, Imbalance, Locked Rotor during Start-up, Locked Rotor during Operation

✔ Auxiliary Functions: Runtime Storage, Fault Cause Storage, Restart Limit Function, 

    Fail-Safe Function

✔ Enhanced Monitoring Functions: 

    Three-phase current and leakage current, action causes

✔ Bar Graph Display Function

✔ Compatible with Three-phase and Single-phase

✔ Three-phase Current and Leakage Current Cycling Display Function

✔ For FMZ2, protection functions and actions will not be affected even if the 

    display window is removed

✔ Compliant with RoHS

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%

Ground Fault Protection, Ig > Ground Current Setting

Reverse Phase Protection

[Us]

Rated Input Voltage

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

0.5...80 A (Definite time)

0.03...10 A (Definite time) - Ground Fault Current

35 mm DIN Rail

Panel Mounting

Contact Type
 & Composition

A type : 1 NO, OL & 1 NO, GR

C type : 1 NC+1 NO, OL/GR

D type : 1 NC, OL & 1 NO, GR

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

Ground Fault Action Time: 0.03...10 seconds

Ground Fault Action Delay Time During Start-up: 0...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

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

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

FMZ2

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

Wiring Diagram for 3-Phase Motor (Output Contact Type A, a-a Contact)

Wiring Diagram for 3-Phase Motor (Output Contact Type C, Common Contact)