A type GFR ground fault protection system, when properly installed on a grounded electrical system, will sense phase-to-ground fault currents. When the level of fault current is in excess of the pre-selected current pickup and time delay settings, the GFR relay will initiate a trip action of a disconnect device, which will open the faulted circuit and clear the fault. The GFR devices are UL class 1 devices designed to protect electrical equipment against extensive damage from arcing ground faults. A basic type GFR ground fault protection system consists of a ground fault relay, a ground fault current sensor and a disconnect device equipped with a shunt trip device. This disconnect device can be a molded case circuit breaker, a power circuit breaker, a bolted pressure switch or other fusible disconnect device, suitable for application with UL class 1 ground fault sensing and relaying equipment.

EATON Ground Fault Relay, Mechanical Reset Interlocking Reset, Series: GFR, 120 VAC, Specifications: 50 to 60 Hz, 5 to 60 A Ground Current, Flush Mounting, 7.9 in L x 5.4 in W x 3.9 in H Dimensions

• One current sensor
• One relay unit
• One circuit breaker or disconnect device with shunt trip or a shunt trip attachment for mounting in existing breaker
• Optional test panel

• Catalog https://externalassets.unilogcorp.com/ASSETS/DOCUMENTS/ITEMS/EN/IDW_DOCUMENT_06a1543811f7cd5c53cd7838f45ad3465b660e3cdae395b9e5e4d5a07d8005d8.pdf
• Specification Sheet https://externalassets.unilogcorp.com/ASSETS/DOCUMENTS/ITEMS/EN/IDW_DOCUMENT_896aba82ca6075b765c009b5f3c13890832e7bd9762bd0fd0ba82812a0ffac40.pdf