Eaton / Cutler-Hammer CHFN120A1CS Dual Function Miniature Circuit Breaker
- 20A
- 1 Pole
- Plug-On
Quantity
Eaton / Cutler-Hammer CHFN120A1CS - 20A Dual Function Miniature Circuit Breaker
New
Quantity
Description
Part of Eaton's CH series, the CHFN120A1CS provides dual function protection by combining arc-fault and ground-fault capabilities. This 20A breaker protects residential circuits. Designed for quick installation, it mounts into Eaton CH load centers via a plug-on configuration. It features a pigtail neutral and replaces the legacy CHFAFGF120. With a 10 kAIC rating, it relies on thermal-magnetic trip technology. A visual trip flag and self-test functionality ensure ongoing circuit protection.Specifications
| Brand | Eaton / Cutler-Hammer |
|---|---|
| Series | CHFN |
| Amperage | 20A |
| Poles | 1 |
| Mounting Style | Plug-On |
| Voltage | 120/240VAC |
| Phase | 1 |
| AIC Rating | 10kA @ 120/240VAC |
| Frame Type | CH |
|---|---|
| Terminal Type | Box Lugs |
| For Use With | Eaton CH Load Centers |
| Wire Gauge | 14-6 AWG |
| Max Wire | 6 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 | Dual Function (AFCI/GFCI) |
|---|---|
| Available Options | Padlock Attachment |
| Accessories | Pigtail Neutral |
| Standards | UL 489, UL 943, UL 1699, CSA C22.2 No. 5 |
| Approval | UL, CSA |
| Temp Rating | 40C |
| Construction Features | HACR Rated, SWD Rated, Visual Trip Indicator, Self-Test |
Product FAQs
7 answersWhat panels are compatible with the CHFN120A1CS?
This breaker is designed exclusively for Eaton CH series load centers. It requires a 3/4-inch space and will not fit in BR series or other manufacturer panels.
How is the neutral connection wired on this breaker?
The CHFN120A1CS features a pigtail neutral connection. The coiled white pigtail wire must be connected directly to the neutral bus bar in the load center to ensure proper AFCI and GFCI functionality.
Can I use this breaker in a plug-on neutral load center?
While it can physically fit into an Eaton CH plug-on neutral panel, this specific model requires the pigtail wire to be manually connected to the neutral bar. For a direct plug-on neutral connection without the pigtail, the CHFP120A1CS model is required.
What does "Dual Function" mean for this circuit breaker?
A dual function breaker combines both Arc Fault Circuit Interrupter (AFCI) and Ground Fault Circuit Interrupter (GFCI) protection into a single device. This meets National Electrical Code (NEC) requirements for areas needing both types of protection, such as kitchens and laundry rooms.
Can the CHFN120A1CS replace older Eaton CH AFCI or GFCI breakers?
Yes, this model replaces legacy Eaton CH dual function breakers like the CHFAFGF120. It can also be used to upgrade standard or single function breakers to dual AFCI and GFCI protection, provided the panel is a compatible CH series load center.
What does the "CS" suffix in CHFN120A1CS indicate?
The "CS" suffix typically denotes clamshell retail packaging. The breaker itself maintains the exact same electrical specifications, trip curves, and physical dimensions as the standard CHFN120A1 model.
Does this breaker include diagnostic indicators for tripping?
Yes, Eaton CH dual function breakers feature a visual trip flag and an LED diagnostic indicator. The LED blinks a specific code to help electricians identify whether a trip was caused by an arc fault, a ground fault, or a standard overload.
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