Manufacturer/Brand

Schneider Electric

Product Range (Series)

EOCR series

Model Name

EOCR-i3DM digital motor protection relay

place of origin

South Korea (Yishan Factory)

Authorized General Agent in China

Shanghai Hanshi Electric Automation Equipment Co., Ltd

Protection function setting range

Protection setting range

0.5~32 A (inverse time limit/thermal accumulation inverse time limit), external CT should be used for 32A and above
0.5-80 A (timed limit), external CT is used for 80A and above

Time Setting

Overload protection OC: timed limit (0.2-30 seconds); Inverse time limit (1-30 classes)

Underload protection UC: timed limit (0.5-30 seconds)

Phase loss protection PL: 0.5 to 5 seconds (can be set to turn off)

Reverse protection RP: Action time 0.15 seconds

Unbalance protection Ub: action time 1-10 seconds, set range 10-50%

Starting blockage Sc:+0.5 seconds after the start delay (D-Time) ends

Running stall JA: 0.2 to 10 seconds

Short circuit protection SH (optional)

startup delay

0-200 seconds can be set or turned off (D-time)

Measurement and communication functions

measurement accuracy

± 1%, True RMS (32-bit MCU)

THDmonitoring

Display when total harmonic distortion occurs, alarm threshold can be set

communication interface

Communication protocol: Modbus RTU

Communication method: RS-485

Baud rate: 2400~38400 bps

Electrical parameter monitoring

Real time display of three-phase current, alarm and action reasons

Electrical and mechanical characteristics

Control power supply (Us)

U：100–240 V AC/DC

B：24 V AC/DC

power frequency

50/60 Hz

Installation Method

35mm DIN rail installation

Output contact

1 NC+1 NO (95-96/97-98): Overload trip (OL)

1 NO (07-08): Alarm (AL)/Underload (UL)/Alarm (TO)

Fuse specifications

BY 4 A gG

Rated voltage of main circuit [Ue]

600 V AC, 50-60 Hz (main circuit, UL compliant)

690 V AC, 50-60 Hz (main circuit, compliant with CSA)

690 V AC, 50-60 Hz (main circuit, compliant with IEC 60947-4-1)

Impact withstand voltage (Uimp)

6 kV (compliant with IEC 60947-4-1)

Reset method

Manual reset (RESET)

Automatic reset (0.5-1200 seconds)

Electrical reset (power-off reset, 0-1 second)

Communication remote reset (via Modbus communication)

display interface

Bar load rate chart+5-digit seven segment digital tube LED

Relay power consumption

3 W

Contact capacity/It

Control circuit continuous current Ith: 3A

Allowable current: 250 V, 3 A

Wiring specifications

Control circuit cable: 2 × 1-1.5 mm ² (with/without terminal flexible cable M3)

Control circuit cable: 1 × 1-2.5 mm ² (with/without terminal flexible cable M3)

Main circuit terminal: 1 × 2.5-25 mm ² (flexible cable M6 without terminal)

Tightening torque

Control circuit terminal: 0.8-1.2 N · m (cable diameter 4.7 mm)

Main circuit terminal: 2.5 N · m (terminal clamp diameter 11 mm)

External dimensions/weight

Window type (W × H × D): 70 × 74.5 × 83.8 mm 0.315 kg

Bottom hole type (W × H × D): 70 × 56.3 × 108.1 mm 0.355 kg

Terminal type (W × H × D): 70 × 91.3 × 108.1 mm 0.473 kg