Eaton / Cutler-Hammer QBGFT2040 GFCI Miniature Circuit Breaker

This bolt-on Quicklag breaker is designed for commercial Eaton and Cutler-Hammer Pow-R-Line panelboards, including the PRL1a, PRL2a, PRL1X, and PRL2X series. It will not fit in standard residential plug-on load centers.

Yes. The QBGFT2040 is the direct manufacturer upgrade for the discontinued QBGF2040. The newer T model includes an automated self-test feature to comply with updated UL 943 safety standards while keeping the exact same physical dimensions and bolt-on configuration.

It provides Class A personnel ground fault protection with a 5mA trip sensitivity. This protects personnel from shock hazards in damp or wet locations, as opposed to the 30mA threshold found on equipment protection (EPD) breakers.

The QBGFT2040 is equipped with a pigtail neutral wire. This coiled white wire must be terminated directly to the panelboard neutral bus to supply power to the internal GFCI sensing circuitry, even if the 240V load being served does not require a neutral connection.

Yes, this circuit breaker is HACR rated. It is approved for use with modern heating, air conditioning, and refrigeration systems that require this specific overcurrent protection rating.

Yes. To maintain compliance with modern National Electrical Code (NEC) and UL guidelines, the QBGFT2040 routinely performs internal self-diagnostics to ensure the electronic ground fault sensing circuitry remains fully operational.

Yes, the QBGFT2040 features an internal common trip mechanism. If a short circuit, overload, or ground fault occurs on either phase, both poles will open simultaneously to fully and safely disconnect the 240V circuit.