Eaton / Cutler-Hammer CH120AF AFCI Miniature Circuit Breaker
- 20A
- 1 Pole
- Plug-On
Quantity
Eaton / Cutler-Hammer CH120AF - 20A AFCI Miniature Circuit Breaker
New
Quantity
Quantity
Eaton / Cutler-Hammer CH120AF - 20A AFCI Miniature Circuit Breaker
New
Quantity
| Brand | Eaton / Cutler-Hammer |
|---|---|
| Part Number | CH120AF |
| Series | CH |
| 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 | Type CH Load Centers |
| Wire Gauge | (1) 14-8 AWG (Cu/Al), (2) 14-10 AWG (Cu/Al) |
| Max Wire | 8 AWG |
| Min Wire | 14 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed |
| Special Classification | AFCI |
|---|---|
| Available Options | Padlock Attachment, Handle Lock |
| Accessories | Pigtail Neutral |
| Standards | HACR, UL 1699, UL 489 |
| Approval | UL |
| Temp Rating | 60C to 75C |
| Construction Features | HACR Rated, Branch Feeder Arc Fault |
Quantity
Eaton / Cutler-Hammer CH120AF - 20A AFCI Miniature Circuit Breaker
Re-Certified
Quantity
| Brand | Eaton / Cutler-Hammer |
|---|---|
| Part Number | CH120AF-R |
| Series | CH |
| 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 | Type CH Load Centers |
| Wire Gauge | (1) 14-8 AWG (Cu/Al), (2) 14-10 AWG (Cu/Al) |
| Max Wire | 8 AWG |
| Min Wire | 14 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed |
| Special Classification | AFCI |
|---|---|
| Available Options | Padlock Attachment, Handle Lock |
| Accessories | Pigtail Neutral |
| Standards | HACR, UL 1699, UL 489 |
| Approval | UL |
| Temp Rating | 60C to 75C |
| Construction Features | HACR Rated, Branch Feeder Arc Fault |
Description
Delivering branch/feeder arc fault protection, the CH120AF single-pole breaker belongs to Eaton's CH series. Built for residential applications, it actively monitors circuits to detect parallel arcing faults. This 20-amp unit installs into standard Type CH panelboards and utilizes a pigtail neutral connection. Providing a 10 kAIC rating at 120/240V, it is UL 1699 listed. It replaces older AFCI units and is superseded by the CHFN120AF. Featuring Fire-Guard technology, it is HACR rated.Specifications
| Brand | Eaton / Cutler-Hammer |
|---|---|
| Part Number | CH120AF |
| Series | CH |
| 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 | Type CH Load Centers |
| Wire Gauge | (1) 14-8 AWG (Cu/Al), (2) 14-10 AWG (Cu/Al) |
| Max Wire | 8 AWG |
| Min Wire | 14 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed |
| Special Classification | AFCI |
|---|---|
| Available Options | Padlock Attachment, Handle Lock |
| Accessories | Pigtail Neutral |
| Standards | HACR, UL 1699, UL 489 |
| Approval | UL |
| Temp Rating | 60C to 75C |
| Construction Features | HACR Rated, Branch Feeder Arc Fault |
Product FAQs
8 answersWhat panels are compatible with the CH120AF circuit breaker?
The CH120AF is designed exclusively for use in Eaton and Cutler-Hammer Type CH load centers. It requires a standard 3/4-inch space per pole and connects to the bus bar using a plug-on mounting style. It is not compatible with Type BR or other 1-inch panelboards.
How do I wire the pigtail neutral on the CH120AF?
The CH120AF features a white pigtail wire that must be connected directly to the neutral bus bar in your load center. The circuit's load neutral wire connects to the breaker's designated silver neutral lug, and the hot wire connects to the gold load lug.
Is the CH120AF obsolete, and what is the direct replacement?
The CH120AF is an older branch-feeder AFCI that has been superseded by newer combination AFCI models to meet updated NEC requirements. The direct modern replacement is the Eaton CHFN120AF, which provides combination arc-fault protection and includes a diagnostic trip flag.
What is the difference between the CH120AF and the CH120CAF?
The CH120AF is a Branch-Feeder AFCI, which detects parallel arcing faults. The CH120CAF and the newer CHFN120AF are Combination AFCIs that detect both parallel and series arcing faults, providing a higher level of fire prevention required by modern electrical codes.
Can I use the CH120AF in a Plug-On Neutral load center?
Yes, you can use the CH120AF in a Plug-On Neutral load center, but you must still manually route and connect the white pigtail wire to the neutral bus bar. If you prefer a breaker that connects directly to the neutral bus without a pigtail, you will need a Plug-On Neutral specific model like the CH120CAFPN.
What size wire does the CH120AF accept?
The box lugs on the CH120AF accept a single copper or aluminum wire from 14 AWG to 8 AWG, or up to two wires from 14 AWG to 10 AWG. Ensure proper torque is applied during installation to maintain a secure connection.
What does the LI trip function mean on this breaker?
The LI designation indicates that the breaker uses a thermal-magnetic trip unit with Long-Time and Instantaneous trip functions. The long-time function protects against sustained overloads, while the instantaneous function trips immediately during a severe short circuit.
Is the CH120AF HACR rated?
Yes, the CH120AF is HACR rated, meaning it is approved for use with heating, air conditioning, and refrigeration equipment that requires this specific circuit protection.
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Reviews
Review summary
Customers rate this product 5.0 out of 5 based on 74 reviews.
- JGJason G.Verified BuyerReviewingEaton / Cutler-Hammer CH220GFI - 20A GFCI Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars8/24/26It was as advertised
It was delivered on time and works.
- LGlarry g.Verified BuyerReviewingEaton / Cutler-Hammer CH335 - 35A 3 Pole Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars7/20/26good
Great part quick shipping
- PLPhid L.Verified BuyerReviewingEaton / Cutler-Hammer CH230GFI - 30A GFCI Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars7/7/26EFFICIENT
BREAKER ARRIVED QUICKLY. WELL PACKAGED FOR PROTECTION.
- CSChristine S.Verified BuyerReviewingEaton / Cutler-Hammer CH2100-LONG - 100A 2 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars5/18/26Got a great refurbished breaker - saved a $6500 Service Replacement
When our main breaker frizzed out, the option we were presented with was replacing the entire panel and service due to the type and part - no longer produced for replacement parts. It would be a $6500 replacement.
We'll likely have to do it at some point but, for now, the replacement breaker we were able to source from Superbreakers (with a $25 warranty) was $5900 less expensive. installation ran a few hundred dollars and the tech said the part looked to be in excellent condition and was prepped for install as he would have hoped.
Very thankful for SuperBreakers!
- MKMichael K.Verified BuyerReviewingEaton / Cutler-Hammer CH330 - 30A 3 Pole Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars4/22/26Happy Customer
Arrived as described and in the timeframe