24V DIN Rail Overcurrent Earth Fault Protection AC DC Earth Leakage Relay for Single Phase 3 Phase Power System

• Customization: Available
• Theory: Electromagnetic Relay
• Phase: 3
• Model NO.: ELR-4MD
• Electricity Type: AC DC
• Number of Pole: 3
• Load: Medium Power Relay
• Protective Characteristics: Enclosed Relay
• Action Principle: Electromagnetic Type
• Size: 78*90*60 mm
• Type: Electric Parameter Relay
• Reset Type: Locally, Remote and Automatically
• Measurement: a-Type Residual Current
• Communication: RS485
• Frequency: 50/60Hz
• Transport Package: Carton
• Specification: 10*10cm
• Trademark: Blue Jay
• Origin: China
• Production Capacity: 1000PCS Per Month
• Package Size: 10.00cm * 10.00cm * 10.00cm
• Package Gross Weight: 0.650kg

Product Description

 

Product Description

The ELR-4MA  AC Earth Leakage Relay is an advanced protection device designed to enhance the safety and reliability of electrical systems. With a residual current transformer (RCT), it continuously monitors the residual current in the busbars or branches of the system. When the residual current exceeds the preset threshold, the relay promptly outputs an alarm signal, ensuring early detection of potential faults.

Equipped with an alarm function, the ELR-4MA ensures that alarm signals remain clearly indicated until the reset signal, facilitating easy fault diagnosis and troubleshooting. ELR-4MA is critical for preventing equipment damage, minimizing downtime, and safeguarding personnel against electrical hazards.

Feature

1. Isolated auxiliary power supply; 
2. 2XSPDT relay outputs;
3. Remote test/rest connections;
4. Standard 35mm din rail mounting;
5. RS485 Modbus communication;
6. Type A residual current measurement;
7. Rated residual action current can be set ;
8. Limit non-driving time can be set ;
9. Two sets of relay outputs (settable) ;
10. The fault alarm of transformer can be set; Warning value can be set ;

Application

1. Smart grid system;
2. Medium and low voltage systems;
3. Commercial and residential buildings;
4. Utilities and power distribution systems;
5. Motor control panels and switchboards;
6. Distribution line grounding fault protection
7. General grounding fault protection load
8. Direct grounding protection
9. High resistance grounding fault protection grounding

Specification

Parameter	Value
Auxiliary power supply	85-265Vac/dc
Power consumption	≤4VA
Frequency	50/60Hz, Accuracy ±0.01Hz
Leakage current alarm threshold	6mA-60A, can set as need.
Time delay	50ms-10sec, can set as need.
Communication	RS-485 MODBUS-RTU
Display	LCD with backlit
Withstand voltage	2.5KV 1min
Insulation	Input, output, power supply to shell >5MΩ
Storage environment	-40~70°C
Working environment	-25~55°C Altitude ≤2500m, 0~95%RH, non-condensing, non-corrosive gas

 

Wiring Diagram

 

Dimension

 

Company Profile