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17717479099 | EOCR-3EZ Overview ✔ Built-in MCU (Microcontroller Unit) ✔ Real-time processing / High accuracy ✔ Integrated dedicated MCU microcontroller ✔ Current protection range: Model 05: 0.5~7A; Model 80: 5~80A ✔ For current above 80A, use external CT with Model 05 for protection, secondary current can be set to 1A or 5A ✔ Digital display ✔ Power-off mode options: N and R ✔ 35mm DIN rail mounting ✔ Reset modes: Manual (RESET), power-off, and automatic reset options ✔ Suitable for 20~400Hz variable frequency environments ✔ Three fault records, data retained even during power outages ✔ Terminal or through-wiring options available | |
EOCR3EZ-05AUH EOCR3EZ-80AUH EOCR3EZ-05CUH EOCR3EZ-80CUH | ||
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EOCR3EZ-05AUT EOCR3EZ-80AUT EOCR3EZ-05CUT EOCR3EZ-80CUT | ||
EOCR-FEZ Protection Functions
✔ Overcurrent (Definite Time: 0.5...30 sec, Inverse Time: 1...30 levels)
✔ Undercurrent (0.5...30 sec)
✔ Phase Loss (within 3 sec)
✔ Reverse (0.1...0.3 sec)
✔ Current Imbalance (within 8 sec)
✔ Locked Rotor (after D-Time)
✔ Ground Fault (0.03...10 sec)
EOCR-3EZ Product Features
| Product Specifications |
| Product Range | EOCR |
| Model Name | EOCR-3EZ Electronic Overcurrent Relay |
| Protection Type | • Overload Protection, Setting Value (In > Overcurrent Setting Value) • Undercurrent Protection, Setting Value (In < Undercurrent Setting Value) • Locked Rotor Protection During Operation, Setting Value (In > 1.5...5 times Overcurrent Setting Value) • Phase Loss Protection • Phase Reversal Protection • Locked Rotor Protection During Start-up, Setting Value (In > 2...10 times Overcurrent Setting Value) • Imbalance Protection (5...50%) • Ground Fault Protection, Setting Value (Ig > Ground Fault Setting Value) |
[Us] Rated Input Voltage | 100~240V AC / AC |
| Power Frequency | 50...60 Hz |
| Relay application | Motor protection |
| Protection Range | 05：0.5-7 A When Used with External CT: Primary: 10-800 A Secondary: 1 A, 5 A |
Ground Fault Current (Ec) | 0.03-10A |
| Mounting Method | 35mm DIN rail mounting or screw fixing |
| Electrical/Mechanical Characteristics |
| Contact Type | Type A: •1 NC + 1 NO (OL): One normally closed contact and one normally open contact for overload protection •1 NO (GR): One normally open contact for ground fault protection Type C: •1 NC + 1 NO (OL): One normally closed contact and one normally open contact for overload protection •1 NO (AL): One normally open contact 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 |
| Reset method | Manual reset / Electric reset / Automatic reset |
| Time Setting | Overcurrent Trip Time: 0.2...30 seconds (Inverse Time) |
| Display Type | Bar graph and 7-segment LED display |
| Power Consumption | 5 W |
| Continuous Current | 3 A control circuit |
| Permissible Current | 100...240 V，3 A |
| Wiring | Control Circuit Cable: 2 x 1…1.5 mm² Flexible Cable with Terminals - M3 Control Circuit Cable: 2 x 1…1.5 mm² Flexible Cable without Terminals |
| Tightening Torque | Control circuit 0.8...1.2 N·m suitable for 4.7 mm cable |
| Dimensions and weight |
| type | Through bottm-hole type | Through screw-terminal type |
| Height | 56.3mm | 91.3 mm |
| Width | 70mm | 70 mm |
| Depth | 106 | 106 |
| Weight | 470g | 640g |
| Using Environment |
| Using Temperature | Matching IEC 60947-4-1, -20…60 °C |
| Storage Temperature | -40…85 °C |
| Using Altitude | 2000m |
| IP Rating | IP20 conforming to IEC 60529 |
| Fire Resistance | 650°C, compliant with IEC 60695-2-12 standard |
| Shock Resistance | 15 gn 11 ms compliant with IEC 60068-2-7 |
| 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 |
| Surge Withstand | 6 kV compliant with IEC 61000-4-5 |
| 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 |
| Certification and standards |
| Standards | Matching IEC 60947-4-1 |
| Certification | CE |
| 18 months warranty |
EOCR-3EZ Reference Wiring
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※ When FS is set to ON and operating power is applied to A1, A2, OL output 97┤├98 switches to OFF ※ The ZCT terminal must be used without grounding | ※ When FS is set to ON and operating power is applied to A1, A2, OL output 97┤├98 switches to OFF ※ The ZCT terminal must be used without grounding |
※ The control power should be supplied by an isolation transformer connected between phases | ※ The control power should be supplied by an isolation transformer connected between phases |
EOCR-3EZ Dimensions
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EOCR-3EZ Product Ordering
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If you are interested in our products, or if we can help you, you can call our national customer service number at any time:+86-17717479099
You can also communicate with us online, of course, you can also leave us a message below, we will be happy to serve you!
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