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Product Description
Earth Leakage Relays (ELR), also known as Residual Current Relays (RCDs) or Residual Current Devices (RCDs), are protective devices designed to detect leakage currents that flow through the earth or ground. These devices play a critical role in safeguarding electrical systems by preventing electrocution, electrical fires, and damage to equipment caused by faulty wiring, insulation failures, or ground faults.