Free Shipping Over $99
Eaton / Cutler-Hammer GFCB120CS GFCI Miniature Circuit Breaker
- 20A
- 1 Pole
- Plug-On
Eaton / Cutler-Hammer
GFCB120CS
GFCI Miniature Circuit Breaker
Brand
Eaton / Cutler-Hammer
SKU
GFCB120CS
Quantity
Shop with Confidence
Add an extra year of protection in your cart.
Eaton / Cutler-Hammer GFCB120CS - 20A GFCI Miniature Circuit Breaker
New
Quantity
Similar Items
20A GFCI Miniature Circuit Breaker
20A GFCI Miniature Circuit Breaker
15A GFCI Miniature Circuit Breaker
Description
Supplied in convenient clamshell packaging, the Eaton GFCB120CS delivers 20 amps of ground-fault protection for residential safety. It includes a standard pigtail neutral wire to facilitate proper installation in wet or damp locations. The plug-on design allows for quick integration into Eaton BR, Bryant, Westinghouse, and Challenger panelboards. Delivering a 10 kAIC rating at 120VAC, this thermal-magnetic breaker combines standard overload defense with sensitive ground-fault detection.Specifications
| Brand | Eaton / Cutler-Hammer |
|---|---|
| Part Number | GFCB120CS |
| Series | GFCB |
| Amperage | 20A |
| Poles | 1 |
| Mounting Style | Plug-On |
| Voltage | 120VAC |
| Phase | 1 |
| AIC Rating | 10kA @ 120VAC |
| Frame Type | GF |
|---|---|
| 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 | Clamshell Packaging |
| Standards | CSA C22.2 No. 144, UL 489, UL 943 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, SWD Rated, Clamshell Packaging |
Product FAQs
5 answersWhat is the difference between the GFCB120 and the GFCB120CS?
The breakers are identical in function and specifications. The CS suffix indicates that the GFCB120CS is shipped in retail clamshell packaging rather than standard bulk packaging.
What is the ground fault trip threshold for the GFCB120CS?
As a Class A GFCI breaker, it is designed to trip when it detects a ground fault leakage current between 4mA and 6mA, providing personnel protection against electrical shock per UL 943 standards.
How do I wire the pigtail neutral on this GFCI breaker?
The breaker features a coiled white pigtail wire that must be connected directly to the neutral bus bar in the load center. The neutral wire from the branch circuit then connects to the designated load neutral terminal on the breaker itself.
Is the GFCB120CS compatible with legacy Westinghouse or Challenger load centers?
Yes, Eaton Type BR breakers are UL classified as direct replacements for legacy Bryant, Challenger, and Westinghouse load centers that originally accepted Type BR breakers.
Can I use this breaker on a shared neutral circuit?
No, single-pole GFCI breakers like the GFCB120CS cannot be used on multi-wire branch circuits with shared neutrals. The shared neutral will cause an imbalance in the current detection, resulting in immediate nuisance tripping.
SuperClub
Join free. Get 500 SuperPoints.
Earn points on eligible purchases and redeem them at checkout.
100 SuperPoints = $1 off.
Warranties
Add an extra year of protection
60-Day Warranty
Your purchase includes 60 days of SuperBreakers warranty coverage.
Add a 1-year warranty extension in your cart.
Get a Quote
Don’t see what you’re looking for?
We source obsolete and hard-to-find parts every day.
Shipping
Free Shipping Policy
Parcel shipments with item value over $99 qualify for free economy shipping within the continental US. Please call to confirm special handling instructions. We do not charge a handling fee or require a minimum amount on any order. SuperBreakers does not ship on customer accounts.
Same Day Shipping
We strive to ship out your items the same day the order is placed. In rare circumstances SuperBreakers may reserve up to 5 business days to consolidate orders for complete shipment.
Expedited Shipments
Orders being shipped via Next Day Air, 2 Day Shipping or 3 Day Shipping must be received by 3 PM EST to guarantee same-day shipments. Expedited orders only ship on normal business days. Shipments will NOT be sent out on Saturdays and Sundays.
International Shipping
All International orders require a $1,000 minimum order threshold. Due to the special nature of these shipments, we require that these be placed with a SuperBreakers representative. Additional shipping and instructions will apply. All International Orders are Non-Cancel and Non-Refundable.