Eaton CHF125ST Thermal Magnetic Circuit Breaker - UL 489
Part Number: CHF125ST
Quick Summary
The Eaton CHF125ST thermal magnetic circuit breaker protects electrical panels by interrupting fault currents in distribution circuits. Selecting the right breaker helps minimize nuisance trips and maintain uptime across critical loads. This device carries UL Listed 489 certification, HACR rating, and a robust 10 kAIC interrupt capacity, giving you reliable protection for sensitive equipment and HVAC controls. The Type CHF plug-on design simplifies mounting in CH Loadcenters, and its 25 A rating covers typical branch circuits in residential and light commercial panels. With compatibility for mixed Cu/Al wiring and support for both solid and stranded conductors, it delivers flexible terminations. Leveraging these features translates to faster installs, reduced service calls, and improved panel reliability in everyday operations.
Product Information
Extended Description
CHF125ST Eaton: Eaton CH thermal magnetic circuit breaker,Type CHF plug-on circuit breaker,25 A,10 kAIC,Single-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
CHF125ST
UPC
786685708300
Product Length/Depth
2.375 in
Product Height
6 in
Product Width
3.5 in
Product Weight
0.5 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
25 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
(2) #14-10 AWG Cu/Al (1) #14-8 AWG
Number of poles
Single-pole
Residential and Light Commercial, Metering Products, Volume 1 Tab 4
Eaton Specification Sheet - CHF125ST
Eaton type CH circuit breaker limited warranty June 2024
Feature: 25 A amperage rating with 120/240 V operation provides targeted protection for common residential and light commercial branch circuits. Business Impact: Prevents nuisance overloads and reduces downtime from unexpected trips. Application: Ideal for lighting and receptacle circuits in CH Loadcenters where stable, predictable protection is required. Feature: 10 kAIC interrupt rating offers higher fault tolerance and safer disconnects under fault conditions. Business Impact: Improves protection for feeders and critical loads, supporting code compliance and safer maintenance. Application: Suitable for moderate-size distribution panels and HVAC circuits where reliable interruption is essential. Feature: Shunt trip included enables remote tripping and integration with building automation or safety interlocks. Business Impact: Enhances emergency shutdown capabilities and improves overall site safety. Application: Systems requiring coordinated trip under fire or security conditions. Feature: Plug-on mounting design simplifies installation and reduces field wiring errors in Type CHF loadcenters. Business Impact: Shortens install time and improves contact reliability, lowering labor costs. Application: Quick replacement or upgrading in existing panels without rewiring. Feature: Wire compatibility supports solid and stranded conductors with Cu/Al terminations, reducing termination complexity. Business Impact: Flexibility lowers wiring mistakes and enables mixed-wire installations, improving long-term reliability. Application: Panel terminations where diverse conductor types are present. Feature: UL Listed 489 compliance with HACR rating ensures adherence to electrical safety standards and cooling/heating device protection requirements. Business Impact: Streamlines regulatory approvals and enhances energy-system protection. Application: Residential and light-commercial HVAC and electronics protection in compliant installations.
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FAQs
CHF125ST is designed for Type CHF plug-on mounting in Type CH Loadcenters. It supports single-pole configurations, 25 A rating, and wiring with solid or stranded Cu/Al conductors. This enables straightforward replacements and upgrades within established panels, reducing downtime and avoiding rewiring while maintaining code-compliant protection for branch circuits.
Key specs include 25 A amperage, 120/240 V voltage rating, 10 kAIC interrupt rating, single-pole configuration, and included shunt trip. The device is HACR rated and UL Listed UL 489, ensuring reliable fault interruption and compatibility with typical residential and light commercial loads.
Yes. CHF125ST is optimized for Type CH Loadcenters in residential and light commercial environments. Its 25 A rating supports common lighting and outlet circuits, while the 10 kAIC interrupt capability and HACR rating address safety for HVAC and other connected loads, aligning with typical codes and service expectations.
CHF125ST carries UL Listed 489 certification and is HACR rated, reflecting compliance with recognized safety standards for circuit breakers and HVAC-related loads. This combination supports regulatory acceptance and reliable protection across conventional panel installations.
CHF125ST carries a limited lifetime warranty, highlighting long-term reliability for duty cycles in residential and light commercial panels. There are no special maintenance requirements beyond standard inspection practices; ensure proper torque on terminations and confirm Cu/Al wire compatibility during installation for optimal performance.