The AFR-S Arc Fault Protection Relay is a cost-effective solution designed to minimize arc-fault damage in low-voltage (LV) or medium-voltage (MV) feeder circuits, often referred to as a feeder protection relay. It comes equipped with three arc sensors for monitoring arc faults on cable connections and busbars within the cabinet.

Its primary functions encompass three-stage phase-to-phase overcurrent protection, overload protection, zero-sequence overcurrent protection, arc flash protection, and high-temperature & over-temperature protection.

This arc fault protection system can automatically detect the light emitted during an arc flash, triggering a rapid shutdown to limit equipment damage, enhance safety, and prevent personnel injuries. It can be used either as a standalone arc protection relay or integrated into more complex switchgear configurations.