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Description
Schneider EGR-20USAM | MODBUS-RTU 8Pin Socket, Current ZCT
General Description:
The Schneider EGR-20USAM is a communication module designed to interface with ZCT (Zero Phase Current Transformers) and EOCR protection devices. It features MODBUS-RTU communication via an 8-pin socket, allowing real-time monitoring and data exchange between protective relays and PLCs or SCADA systems.
Key Features:
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Model: EGR-20USAM
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Communication Protocol: MODBUS-RTU
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Connection Type: 8-pin socket
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Application: Current transformer (ZCT) interface
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Function: Enables communication and data transmission from EOCR/ZCT to external systems
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Voltage Supply: Typically 24V DC (check datasheet for confirmation)
Technical Specifications:
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MODBUS Interface: RS-485
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Baud Rate Support: Multiple standard rates (e.g., 9600, 19200 bps)
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Pin Configuration: 8-pin modular socket for easy installation
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ZCT Compatibility: Designed to work with Schneider EOCR series and ZCTs (e.g., ZCT-035, ZCT-080, ZCT-120)
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Indicator LEDs: Communication and power status
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Mounting: DIN rail or panel mount
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Operating Temperature: -10°C to +60°C
Typical Applications:
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Motor protection systems using EOCR relays
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Leakage and ground fault current detection
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Integration into MODBUS-based SCADA/PLC systems
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Remote monitoring and control in industrial automation
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Energy and maintenance management in electrical panels
Benefits:
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Reliable communication between protection devices and central systems
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Plug-and-play setup with modular 8-pin socket
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Real-time data transmission for enhanced safety
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Compact design for space-saving in control panels
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Compatible with Schneider’s EOCR + ZCT systems
Additional information
| brands | Schneider Electric |
|---|
Specifications
| range of product | EOCR |
|---|---|
| Device short name | EGR |
| Product or component typee | Protection relay |
| Protection type | Earth fault, Ig > Ig setting |
| Product specific application | Ground fault protection |
| Network type | AC |
| Network frequency | 50...60 Hz |
| protection ajustment range | 0.2…2.5 A |
| Tripping threshold | 0.2...2.5 A - earth fault current |
| [Us] rated supply voltage | 110...220 V AC |
|---|---|
| Mounting support | 35 mm DIN rail Panel |
| Contacts type and composition | 1 C/O (GR) |
| Short-circuit and overload protection | By 4 A gG fuse |
| [Ue] rated operational voltage | 600 V AC 50...60 Hz for power circuit conforming to UL 690 V AC 50...60 Hz for power circuit conforming to CSA 690 V AC 50...60 Hz for power circuit conforming to IEC 60947-4-1 |
| [Uimp] rated impulse withstand voltage | 6 kV conforming to IEC 60947-4-1 |
| Reset | Manual reset Electrical 0…1 s by interruption of power supply Automatic reset 0.3 s |
| Time delay type | E-Time: 0.2...2 s |
| Display type | 2 LEDs |
| power consumption per relay | 3 W |
| Connections - terminals | Control circuit: cable 2 x 1…1.5 mm²flexible with cable end - M3 Control circuit: cable 2 x 1…1.5 mm²flexible without cable end - M3 Control circuit: cable 1 x 1…2.5 mm²flexible with cable end - M3 Control circuit: cable 1 x 1…2.5 mm²flexible without cable end - M3 |
| Tightening torque | Control circuit: 0.8...1.2 N.m on cable, 4.7 mm |
| height | 52 mm |
| Width | 70 mm |
| Depth | 71 mm |
| Net weight | 0.245 kg |
| Standards | IEC 60947-4-1 |
|---|---|
| IP degree of protection | IP20 conforming to IEC 60529 |
| Ambient air temperature for operation | -20…60 °C conforming to IEC 60947-4-1 |
| Ambient air temperature for storage | -30…80 °C |
| Operating altitude | 2000 m |
| Fire resistance | 650 °C conforming to IEC 60695-2-12 960 °C conforming to UL 94 |
| Shock resistance | 15 gn for 11 ms conforming to IEC 60068-2-7 |
| Vibration resistance | 4 gn on panel mounting conforming to IEC 60068-2-6 2 gn on 35 mm DIN rail conforming to IEC 60068-2-6 |
| Dielectric strength | 2 kV 50...60 Hz in between case and circuit conforming to IEC 60255-5 1 kV 50...60 Hz in between contact conforming to IEC 60255-5 2 kV 50...60 Hz in between circuit conforming to IEC 60255-5 |
| Surge withstand | 6 kV conforming to IEC 61000-4-5 |
| Electromagnetic compatibility | Resistance to radiated electromagnetic fields: 10 V/m level 3 conforming to IEC 61000-4-3 Resistance to electrostatic discharge: 8 kV air, 6 kV contact conforming to IEC 61000-4-2 Resistance to fast transient: 2 kV conforming to IEC 61000-4-4 Conducted RF disturbances: 10 V conforming to EN 61000-4-6 Conducted RF disturbances: class A conforming to EN 55011 |
| [Ith] conventional free air thermal current | 5 A for control circuit |
| Permissible current | 250 V, 5 A AC |
| Unit Type of Package 1 | PCE |
|---|---|
| Number of Units in Package 1 | 1 |
| Package 1 Height | 11.5 cm |
| Package 1 Width | 9.4 cm |
| Package 1 Length | 10.5 cm |
| Package 1 Weight | 283.0 g |
| Warranty | 18 months |
|---|
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