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Eaton / Cutler-Hammer GFCB120W1 GFCI Miniature Circuit Breaker
- 20A
- 1 Pole
- Plug-On
Eaton / Cutler-Hammer
GFCB120W1
GFCI Miniature Circuit Breaker
Brand
Eaton / Cutler-Hammer
SKU
GFCB120W1
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Eaton / Cutler-Hammer GFCB120W1 - 20A GFCI Miniature Circuit Breaker
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Description
Built for residential and commercial use, the Eaton GFCB120W1 delivers reliable Class A ground-fault protection. This 1-pole, 20A breaker operates at 120VAC and includes a pigtail neutral. It installs into Eaton BR, Bryant, Challenger, and Westinghouse load centers via a plug-on connection. This model is replaced by the GFTCB120. Featuring a 10kAIC rating and 5mA trip sensitivity, it actively monitors for ground faults.Specifications
| Brand | Eaton / Cutler-Hammer |
|---|---|
| Part Number | GFCB120W1 |
| Series | GFCB |
| Amperage | 20A |
| Poles | 1 |
| Mounting Style | Plug-On |
| Voltage | 120VAC |
| Phase | 1 |
| AIC Rating | 10kA @ 120VAC |
| Terminal Type | Box Lugs |
|---|---|
| For Use With | Eaton BR Load Centers, Bryant Load Centers, Challenger Load Centers, Westinghouse Load Centers |
| Wire Gauge | 14-4 AWG |
| Max Wire | 4 AWG |
| Min Wire | 14 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LIG |
| Trip Function | Long-Time, Instantaneous, Ground Fault |
| Trip Adjustability | Fixed |
| Special Classification | GFCI |
|---|---|
| Available Options | Padlock Attachment |
| Accessories | Bell Alarm |
| Standards | CSA C22.2 No. 144, UL 489, UL 943 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, SWD Rated |
Product FAQs
6 answersWhich load centers are compatible with the GFCB120W1 breaker?
This plug-on breaker is designed for use in Eaton BR, Bryant, Challenger, and Westinghouse load centers. It is not compatible with Eaton CH series panels.
What level of ground fault protection does this breaker provide?
The GFCB120W1 delivers Class A ground fault protection with a 5mA trip sensitivity. It actively monitors the circuit to protect personnel from electrical shock.
How is the pigtail neutral connected during installation?
The white pigtail wire must be connected directly to the neutral bar of the load center for the ground fault protection to function. The load neutral wire connects to the designated lug on the breaker itself.
Can I extend or splice the white pigtail wire if it does not reach the neutral bar?
No. According to Eaton guidelines, the factory pigtail is the maximum length permitted and cannot be spliced. You must install the breaker in a panel location where the original pigtail reaches the neutral assembly.
Is the GFCB120W1 still in production or has it been replaced?
The GFCB120W1 is a legacy model that has been replaced by the newer Eaton GFTCB120 catalog number. Both models provide the same 20A ground fault protection for BR style load centers.
What type of trip mechanism does the GFCB120W1 utilize?
It features a thermal-magnetic trip mechanism for standard overload and short-circuit protection, combined with integrated ground fault circuitry to detect leakage currents.
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