Earth leakage relay

Earth leakage and fault current relays provide early warning of insulation deterioration and leakage currents. The relay monitors fault current in DC systems and helps prevent damage to machines and personal injury.

If the current exceeds the set level, the relay responds and indicates a fault.

All our relays can indicate faults in the +/- cable, and some even in branched systems. This significantly facilitates your maintenance work.

The relays feature LED status indicators, high accuracy, and strong immunity to interference.

• Earth leakage relays for DC and AC systems
• Monitoring of insulation faults and leakage currents
• Fault current relays for IT systems and industrial applications

DC Earth Leakage Relays

• DDCA – Monitors IT systems and detects faults in both simple and branched systems
• DDCB – DC earth leakage relay with an external coil for larger cables and busbars
• DDEA – Earth leakage protection for IT systems without grounding (unbalanced systems)
• DDEB – Monitors both symmetrical and asymmetrical ground faults in IT systems

AC Earth Leakage Relays

• DACA – AC earth leakage relay with built-in measuring devices for individual phase monitoring
• DACB – AC earth leakage relay with an external current transformer for larger cables and higher currents