Square D QO120EPD GFEP Miniature Circuit Breaker

A GFEP (Ground Fault Equipment Protection) breaker, like the QO120EPD, provides a 30mA trip threshold designed to protect equipment from ground faults. A GFCI (Ground Fault Circuit Interrupter) breaker provides a 5mA trip threshold designed strictly for personnel protection against electric shock.

Yes. This breaker features a pigtail neutral wire that must be connected directly to the neutral bus bar in the panel. The ground fault sensing circuitry will not function properly without this connection.

No. Square D QO breakers have a 3/4-inch width per pole and use a unique mounting clip. They are not physically compatible with Homeline panels, which require standard 1-inch wide format breakers.

You can physically install this breaker into a Square D Plug-on Neutral (PON) load center, but it will not connect directly to the neutral bar through the mounting rail. You must still land the attached pigtail wire onto the panel's neutral bus.

The QO120EPD is an Equipment Protection Device with a 30mA ground fault trip level, typically used for protecting equipment like heat trace cables or well pumps. The QO120GFI is a Class A GFCI with a 5mA trip level required by code for personnel protection in wet areas like bathrooms or kitchens.

Once installed and energized, press the push-to-test button on the front of the breaker. The breaker should trip immediately and display the Visi-Trip indicator flag. To reset the breaker, push the handle completely to the OFF position, then back to the ON position.