the ELR-4MD DC Earth Leakage Relay is an advanced protection device designed to enhance the safety and reliability of electrical systems. with a hall effect current sensor (HCT), it continuously monitors the residual current in the busbars or branches of the DC 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-4MD DC digital earth leakage relay ensures that alarm signals remain clearly indicated until received the reset signal, facilitating easy fault diagnosis and troubleshooting. ELR-4MD DC earth leakage protection relay is critical for preventing equipment damage, minimizing downtime, and safeguarding personnel against electrical hazards.

Feature
2*SPST relay outputs;
Hall current sensor measurement;
Remote test/rest connections;
Standard 35mm DIN rail mounting;
RS485 Modbus communication;
Adjustable trip levels and time delay.

Application
Smart grid system;
Medium and low voltage systems;
Commercial and residential buildings;
Utilities and power distribution systems;
Motor control panels and switchboards;
DC system leakage current measurement;
Industrial control system (PLC, SCADA, DCS).