EOCR-3DE Overview

✔ Built-in MCU (Microcontroller Unit)

✔ Real-time processing / High accuracy

✔ Overcurrent protection range: 05: 0.5~7A, 80: 5~80A

✔ Secondary current transformer ratio setting: 1A / 5A

✔ Undercurrent protection range: Set below overcurrent

✔ Operating time characteristics: Definite time / Inverse time

✔ Undercurrent trip output

✔ Common output for undercurrent output and OC output

✔ AL output (07-08) automatically switches to dedicated undercurrent (UC) output contact

✔ Digital display screen

✔ Automatic three-phase current cyclic display: Digital ammeter (each phase at 5-second intervals) / Fixed-phase management function through manual cycling

✔ Trip cause digital display: Simple fault, self-diagnosis function

✔ Final trip cause confirmation function: Records the causes of the last three trips and current confirmation at the time of the trip

✔ Confirmable even when power is restored

✔ Manual (immediate) / Automatic reset

✔ Fault protection function (FS: ON)

✔ Self-diagnosis function: Relay power-on, normal operation (selectable by setting)

✔ 35mm DIN rail mounting, suitable for various environments

✔ Suitable for variable frequency systems: 20~400Hz

✔ Terminal type and through type selectable

• Overload protection, set value (In > Overcurrent setting value)

• Under-current protection, set value (In < Under-current setting value)

• Locked rotor protection during operation, set value (In > 1.5...5 times the overcurrent setting value)

• Phase failure protection

• Reverse phase protection

• Locked rotor protection during startup, set value (In > 2...10 times the overcurrent setting value)

• Unbalance protection (5...50%)

[Us] Rated 

Input Voltage

100~240V AC / AC

35mm DIN rail mounting or screw fixing

• 1 NC + 1 NO OL): One normally closed contact and one normally open contact, used for overload protection.

• 1 NO AL): One normally open contact, used for alarm function.

[[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

6 kV Conforming to IEC 60947-4-1

Bar graph and 7-segment LED display

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

Control circuit 0.8...1.2 N·m suitable for 4.7 mm cable.

56.3 mm

70 mm

106 mm

0.27 kg

- Panel mounting: 4 gn, compliant with IEC 60068-2-6

- 35 mm rail mounting: 2 gn, compliant 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