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Performs continuous monitoring and detection of ground faults in low-voltage circuits due to the deterioration of insulation in electrical devices.

Higher reliability ensured with improved resistance to high-frequency noise when used for inverter loads.

Remote monitoring of cubicles is possible with automatic-reset models.

Ground Fault Relays and through-type ZCTs (zero-phase current transformers) are mutually compatible.

The through-type ZCTs are equipped with test terminals, allowing operation tests for Ground Fault Relays to be performed with ease.

Series now includes K6EL-R50, which operates at 50 mA ±10%.