Square D QOB225GFI GFCI Miniature Circuit Breaker

This bolt-on circuit breaker is designed specifically for Square D NQ and NQOD panelboards. It cannot be installed in standard QO load centers.

If you are installing a 25A GFCI breaker in a residential Square D QO load center, you will need the plug-on version, catalog number QO225GFI, instead of this bolt-on model.

The coiled white pigtail wire must be routed and secured to the neutral bus bar in the panelboard. The load neutral wire must then be landed directly on the breaker terminal to enable ground fault sensing.

This breaker provides Class A ground fault protection. It is calibrated to trip when it detects a ground fault leakage current between 4 and 6 milliamps (mA) to protect personnel from electrical shock.

Yes. While it is a 120/240V breaker, it can protect straight 240V loads (like a well pump or heater) that do not use a load neutral. The pigtail must still be connected to the panel neutral to power the internal GFCI circuitry.

The QOB225GFI is a 2-pole breaker that requires two standard 3/4-inch spaces in an NQ or NQOD panelboard.

This breaker features a Visi-Trip indicator. When the breaker trips due to an overload, short circuit, or ground fault, the handle moves to the center position and a highly visible red indicator appears in the window for fast identification.

The QOB225GFI provides Class A ground fault protection for personnel, tripping at 4 to 6 mA. The QOB225EPD is an Equipment Protection Device that trips at a higher 30 mA threshold to protect equipment, not personnel.