Earth-leakage monitoring relay ELR-4MA

current2 NOAC/DC

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 alarm function, the ELR-4MA ensures that alarm signals remain clearly indicated until received 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. • Isolated auxiliary power supply; • 2XSPDT relay outputs; • Remote test/rest connections; • Standard 35mm din rail mounting; • RS485 modbus communication;