Eaton QB3050GF Ground Fault Circuit Breaker
- 50A
- 3 Pole
- Bolt-On
Quantity
Eaton QB3050GF 3 Pole Ground Fault Circuit Breaker
New
Quantity
Description
Eaton QB3050GF 3 Pole Ground Fault Circuit Breaker
The Eaton QB3050GF is a 3 Pole molded case ground fault circuit breaker with a current rating of 50 Amps and a voltage rating of 208Y/120V. It has an interrupting rating of 10kAIC. The QB3050GF has a bolt-on mounting type.
Specifications
| Brand | Eaton |
|---|---|
| Series | QB |
| Amperage | 50A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 208Y/120VAC |
| Phase | 3 |
| AIC Rating | 10kA @ 208Y/120VAC |
| Terminal Type | Lugs |
|---|---|
| For Use With | Eaton Quicklag Panelboards |
| Wire Gauge | 14-4 AWG |
| Max Wire | 4 AWG |
| Min Wire | 14 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-time, Instantaneous |
| Trip Adjustability | Fixed |
| Special Classification | GFCI |
|---|---|
| Approval | UL |
Product FAQs
6 answersWhat type of panelboards accept the Eaton QB3050GF breaker?
This bolt-on breaker is designed for Eaton and Cutler-Hammer commercial panelboards configured for QB-series branch breakers. It cannot be installed in standard residential plug-on load centers.
What is the ground fault trip threshold for the QB3050GF?
This breaker features a 5mA Class A ground fault trip sensitivity, which is designed specifically for personnel protection against electrical shock.
Does the QB3050GF require a neutral connection to function properly?
Yes. The breaker must be connected to the panelboard neutral bus to power the internal ground fault circuitry. This allows the breaker to accurately monitor the current balance across the phases and detect any leakage to ground.
When is a 5mA GFCI breaker required instead of a 30mA equipment protection breaker?
A 5mA Class A GFCI is required by the National Electrical Code for personnel protection in areas with elevated shock risks, such as wet or damp locations. Breakers with a 30mA threshold are strictly for equipment protection and do not meet personnel safety standards.
How does the QB3050GF differ from the QBH3050GF?
The QB3050GF provides a standard 10kAIC interrupting rating. The QBH3050GF is the high-interrupting alternative, rated for 22kAIC. Always verify the available fault current at your panelboard to ensure you select the correct interrupting rating.
How often should the ground fault function of this breaker be tested?
Eaton recommends testing the GFCI mechanism monthly using the integrated test button. This ensures the internal circuitry and mechanical trip linkage are functioning correctly to provide personnel protection.
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Reviews
Review summary
Customers rate this product 5.0 out of 5 based on 1 review.
- MCMarcos C.Verified BuyerReviewingEaton / Cutler-Hammer QB1030GF - 30A GFCI Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars11/20/25circuit breakers
good product and showed up on time