Eaton CHF220ST circuit breaker - UL Listed 489
Part Number: CHF220ST
Quick Summary
The Eaton CHF220ST circuit breaker provides reliable overcurrent protection for CH load centers in commercial and light industrial panels. Coordinating protection without nuisance tripping across varied loads is a common maintenance headache, especially in mixed Cu/Al wire environments. UL Listed 489, HACR rated performance, and compatibility with Type CH Loadcenters ensure safe, code-compliant operation in demanding electrical environments. This solution supports efficient field wiring, plug-on installation, and remote clearing with a shunt trip included, reducing commissioning time and enabling faster service restoration. By pairing solid design with practical features like copper/aluminum compatibility and a 20 A rating at 120/240 V, it delivers measurable business value for panel builders, maintenance teams, and facilities managers.
Product Information
Extended Description
CHF220ST Eaton: Eaton CH thermal magnetic circuit breaker,Type CHF plug-on circuit breaker,20 A,10 kAIC,Two-pole,120/240V,CHF,Trip flag, common breaker trip,(1) #14-8 AWG, (2) #14-10 AWG Cu/Al,CHF,Type CH Loadcenters,Shunt trip included
Product Name
Eaton CH thermal magnetic circuit breaker
Catalog Number
CHF220ST
UPC
786685708379
Product Length/Depth
3.563 in
Product Height
6 in
Product Width
3.5 in
Product Weight
0.75 lb
Warranty
Limited lifetime
Compliances
HACR Rated
Certifications
UL Listed UL 489
Catalog Notes
Solid and stranded wire can be used together.
Used with
Type CH Loadcenters
Type
Type CHF plug-on circuit breaker
Amperage Rating
20 A
Voltage rating
120/240 V
Trip Type
Trip flag
Circuit breaker type
CHF
Shunt trip
Included
Mounting Method
Plug-on
Interrupt rating
10 kAIC
Main circuit breaker
CHF
Wire size
(1) #14-8 AWG (2) #14-10 AWG Cu/Al
Number of poles
Two-pole
Residential and Light Commercial, Metering Products, Volume 1 Tab 4
Eaton Specification Sheet - CHF220ST
Eaton type CH circuit breaker limited warranty June 2024
Feature 1: Two-pole, 20 A, 120/240 V thermal magnetic circuit protection. Business Impact: Provides robust short-circuit and overload protection with fast response, reducing fuse changes and downstream equipment damage. Application: Ideal for Type CH Loadcenters in commercial panels where reliable protection is required across multi-wire circuits. Long-tail keywords: thermal magnetic circuit breaker, two-pole protection, 120/240 V devices. Feature 2: 10 kAIC interrupt rating. Business Impact: High interrupt capacity minimizes arcing and improves safety during fault events, supporting code compliance in preventive protection schemes. Application: Panels serving higher fault currents or equipment with inductive loads. Long-tail keywords: high interrupt rating, arc suppression, electrical safety. Feature 3: Shunt trip included with plug-on mounting. Business Impact: Enables remote tripping for emergency shutdowns and BMS integration, reducing response time during faults. Application: Industrial facilities and critical loads requiring remote control. Long-tail keywords: shunt trip, remote trip, plug-on circuit breaker. Feature 4: Cu/Al wire compatibility with specific wire sizes. Business Impact: Simplifies wiring design and reduces rework by allowing mixed conductor usage, accelerating installation. Application: Service panels and retrofit projects with both copper and aluminum conductors. Long-tail keywords: Cu/Al wire compatibility, wire size #14-8 AWG, #14-10 AWG. Feature 5: UL Listed 489 and HACR rated. Business Impact: Ensures code compliance and energy-related heat management performance, reducing risk of non-conformance during inspections. Application: Commercial and light-industrial installations with strict certification requirements. Long-tail keywords: UL Listed 489, HACR rated, electrical compliance. Feature 6: Compact, plug-on design and Type CHF compatibility. Business Impact: Accelerates installation, lowers panel congestion, and simplifies field upgrades. Application: Type CH Loadcenters and new panel builds where space is at a premium. Long-tail keywords: plug-on circuit breaker, Type CHF plug-on, CH Loadcenters compatibility.
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FAQs
The CHF220ST is designed for plug-on mounting in Type CHF/CH Loadcenters. Start by verifying the panel bus is compatible with Type CHF breakers, then align the two-pole device with the bus stabs and snap it into place. Confirm the Shunt Trip is wired per the control schematic and verify conductor sizes meet the listed Cu/Al ranges (up to #14-8 AWG Cu/Al). This setup minimizes start-up time and ensures a secure, code-compliant installation.
The CHF220ST provides 20 A uninterrupted protection with a 120/240 V rating and a 10 kAIC interrupt capacity. It is a two-pole, plug-on Type CHF device with a trip flag, and it is UL Listed 489 and HACR rated. The included shunt trip enables remote disconnection. When designing circuits, ensure conductors are within the listed size range and that panel ratings align with the 10 kAIC capability.
Yes, the CHF220ST supports both copper and aluminum conductors. The wire sizes specified are (1) #14-8 AWG and (2) #14-10 AWG Cu/Al. Catalog notes explicitly state that solid and stranded wire can be used together, simplifying mixed-wire installations in CH Loadcenters and reducing the need for re-terminations when upgrading panels.
The CHF220ST is UL Listed UL 489 and HACR rated, indicating it meets recognized safety and electrical performance standards for circuit breakers used in general electrical distribution. These certifications facilitate code compliance during inspections and support safer operations in both commercial and light-industrial settings. The device also supports Type CHF plug-on mounting, ensuring compatibility with CH Loadcenters while maintaining regulatory alignment.
The CHF220ST carries a limited lifetime warranty, offering long-term protection for the device itself and reducing replacement costs due to manufacturing defects. In practice, this translates to lower total cost of ownership for panel builders and facilities teams, improved uptime, and a favorable return on investment when combined with its reliable UL Listed performance and shunt-trip functionality for critical loads.