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Eaton / Cutler-Hammer CHF220ST Miniature Circuit Breaker
- 20A
- 2 Pole
- Plug-On
Eaton / Cutler-Hammer
CHF220ST
Miniature Circuit Breaker
Brand
Eaton / Cutler-Hammer
SKU
CHF220ST
Quantity
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Eaton / Cutler-Hammer CHF220ST - 20A 2 Pole Miniature Circuit Breaker
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Description
Part of the CH series, the Eaton CHF220ST combines standard thermal-magnetic protection with remote tripping capabilities. This 2-pole, 20-amp plug-on breaker includes a 120V shunt trip mechanism, making it ideal for commercial applications requiring emergency shutdown or automated control. The device mounts into Type CH load centers, utilizing a 3/4-inch per pole footprint. It features a 10kAIC rating at 120/240VAC, common trip functionality, and a visual flag to easily spot tripped circuits.Specifications
| Brand | Eaton / Cutler-Hammer |
|---|---|
| Part Number | CHF220ST |
| Series | CHF |
| Amperage | 20A |
| Poles | 2 |
| 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 Loadcenters |
| Wire Gauge | (1) 14-8 AWG (Cu/Al) or (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 |
| Available Options | Padlock Attachment, Handle Lock |
|---|---|
| Accessories | Shunt Trip |
| Standards | HACR, UL 489 |
| Approval | UL |
| Temp Rating | 60C to 75C |
| Construction Features | Visual Trip Indicator, HACR Rated, Common Trip |
Product FAQs
6 answersWhat panels are compatible with the Eaton CHF220ST circuit breaker?
The CHF220ST is designed exclusively for use in Eaton and Cutler-Hammer Type CH loadcenters. It requires a 3/4-inch space per pole and is not compatible with Type BR or other manufacturer panels.
What does the ST suffix indicate on the CHF220ST breaker?
The ST designates that this breaker includes a factory-installed 120V shunt trip mechanism. This allows the breaker to be tripped remotely for emergency shutdown or automated control applications.
How does the CHF220ST differ from standard CH220ST breakers?
As part of the CHF series, the CHF220ST features a mechanical trip flag. This provides a clear visual indicator to easily differentiate between a breaker that has tripped due to a fault and one that has been manually turned off.
Is the Eaton CHF220ST suitable for HVAC equipment?
Yes, this breaker is HACR rated, making it approved for use with heating, air conditioning, and refrigeration equipment that requires a 20-amp, 2-pole circuit.
What wire sizes are accepted by the box lugs on the CHF220ST?
The terminals accept either a single 14 to 8 AWG copper or aluminum wire, or two 14 to 10 AWG copper or aluminum wires.
Can I use the CHF220ST to replace an older CH220ST breaker?
Yes, the CHF220ST is fully interchangeable with older standard CH220ST breakers in Eaton or Cutler-Hammer Type CH panels. It provides the exact same protection and shunt trip functionality, with the added benefit of the visual trip flag.
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Reviews
Review summary
Customers rate this product 4.9 out of 5 based on 45 reviews.
Total 5 star reviews: 44 Total 4 star reviews: 0 Total 3 star reviews: 0 Total 2 star reviews: 0 Total 1 star reviews: 1
Reviews Summary
Generated by AI from 44 most recent customer reviews
Last updated 3/6/26
Customers say these breakers work perfectly and fit exactly as described. Many reviews mention the company stocks hard-to-find parts that local hardware stores don't carry. Users appreciate the competitive pricing, often noting costs are lower than big box stores. Fast shipping and delivery times consistently exceed expectations. The ordering process is described as simple and straightforward. Customers frequently mention they will use the service again and recommend it to others. One negative review cited delayed fulfillment and high return fees affecting their business operations.
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Rating
45 reviews
- JMjim m.Verified BuyerReviewingEaton / Cutler-Hammer CHF120ST - 20A 1 Pole Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars4/6/26Shunt trip
Perfect for the ansul hood suppression shutdown.
- CWCody W.Verified BuyerReviewingEaton / Cutler-Hammer CHF250 - 50A 2 Pole Miniature Circuit BreakerI do not recommend this productRated 1 out of 5 stars2/10/26Product is fine but customer service is not great!
I needed these breakers for an install - first time using the company. They said they had them in stock. Took over a week to fulfil the order and it was 11 or 12 days before I had my hands on them. Tough on my business. Then when I went return them they hit me with so many fees that I was gonna net under $30 on a $104 order. It's too bad this was my first experience with them. I'll be sure to tell my electricians and project managers to never use this company. Short sighted. They won the battle but lost the war with a potential great long term client.
- JOJoseph O.ReviewingEaton / Cutler-Hammer CHFCAF120 - 20A AFCI Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars10/30/22A++;
A++;
- JRJoseph R.ReviewingEaton / Cutler-Hammer CHFAFGF120 - 20A Dual Function Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars8/8/22Just as described
Quick turnaround, right fit
- RBRay B.ReviewingEaton / Cutler-Hammer CHFGFT120PN - 20A GFCI Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars2/24/22Great price and inventory
Looking for a hard to find part, these guys have it. Shopping was fast and easy. Part arrive faster than expected. Will be my go to for breakers!