CSA approved GFR-3 is housed in a metal enclosure for panel mounting.

Our Ground Fault System protects electrical distribution equipment against damage caused by low magnitude ground currents. GFR-3 operates reliably on either high or low resistance grounded distribution systems.

Ground Fault Protection Relay GFR-3 works with Zero Sequence Current Transformer (Sensor). When the Ground Fault occurs, the Sensor sends the signal to trip GFR-3 relay. DPDT output contacts are provided to operate breakers, annunciators or other devices.

GFR-3 can operate with any Sensor supplied by Skymatic Controls or others. Ordering Information provides more details about the various Relay options, tripping ranges and selection of Sensors.

GFR-3 is an enhanced version of our GFR-2 with built-in self-test circuit and adjustable time delay. The self-test is activated by the TEST pushbutton. This test will trip both the Ground Fault Relay and the breaker. NO-TRIP pushbutton is also provided to test the Ground Fault Relay without tripping the breaker.

Technical Information

1. Power Supply: 115VAC, + 10%, -20%, 50/60Hz, 9Vamax
2. Tripping Range: See Ordering Information
3. Repeatability Better than 1%.
4. Temperature Range: -10°C thru + 55°C
5. Output Contacts: DPDT, 10A @ 115VAC; 2 - N.O. in series - 1A @ 250VDC
6. Operating Time: 0.1 thru 1.2 sec., adjustable
7. Duty Cycle: Continuous
8. Weight (approx.): 0.7 kg
9. Dimensions: 175 x 115 x 75 mm
10. Mounting Position: Semi-flush panel mount
11. Terminal Wire Size: No. 22AWG to No. 12AWG