Eaton CHF250ST CH thermal magnetic circuit breaker - UL 489
Part Number: CHF250ST
Quick Summary
Eaton CHF250ST is a CH thermal magnetic circuit breaker designed for plug-on installation in Type CH Loadcenters. Engineers often face nuisance trips and compatibility issues when expanding panels, risking downtime and safety concerns. The device is UL Listed UL 489, HACR rated, and configured as a two-pole CHF breaker for Type CH Loadcenters, delivering reliable protection. Rated 50 A at 120/240 V with a 10 kAIC interrupt capacity, it supports a broad range of circuits while preserving standardization for residential and light commercial installations. With a shunt trip included and a compact footprint, it simplifies remote signaling and field upgrades, improving overall system safety and reliability.
Product Information
Extended Description
CHF250ST Eaton: Eaton CH thermal magnetic circuit breaker,Type CHF plug-on circuit breaker,50 A,10 kAIC,Two-pole,120/240V,CHF,Trip flag, common breaker trip,#14-2 AWG Cu/Al,CHF,Type CH Loadcenters,Shunt trip included
Product Name
Eaton CH thermal magnetic circuit breaker
Catalog Number
CHF250ST
UPC
786685708423
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
Used with
Type CH Loadcenters
Type
Type CHF plug-on circuit breaker
Amperage Rating
50 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
#14-2 AWG Cu/Al
Number of poles
Two-pole
Residential and Light Commercial, Metering Products, Volume 1 Tab 4
Eaton Specification Sheet - CHF250ST
Eaton type CH circuit breaker limited warranty June 2024
Feature: Type CHF plug-on circuit breaker that mounts directly into Type CH Loadcenters. Business impact: speeds installation and reduces wiring errors, cutting commissioning time. Application: ideal for new panels and upgrades in residential and light commercial environments. Feature: 50 A, 120/240 V, 10 kAIC interrupt rating. Business impact: delivers robust protection with sufficient fault current margin for common HVAC, lighting, and small equipment circuits. Application: panels serving mixed-load environments where reliable interruption is essential. Feature: Two-pole design with trip flag. Business impact: ensures common trip across poles and provides clear diagnostic indicators during maintenance. Application: panel installations requiring coordinated protection and straightforward fault tracing. Feature: Shunt trip included. Business impact: enables remote disconnection for enhanced safety and integration with building management or safety interlock systems. Application: emergency shutoff and automation-ready installations. Feature: HACR rated and UL Listed UL 489. Business impact: ensures regulatory compliance and suitability for HVAC equipment and general-purpose circuits. Application: Type CH Loadcenters in residential, light commercial, and HVAC-focused panels. Feature: Compact dimensions and plug-on mounting with #14-2 AWG Cu/Al conductors. Business impact: reduces panel footprint and simplifies wiring while maintaining conductor compatibility. Application: space-constrained installations and standardized wiring practices in new builds and upgrades.
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FAQs
The CHF250ST is a plug-on CHF-type breaker designed for direct mounting in Type CH Loadcenters. Ensure the panel is rated for CHF breakers, align the breaker with the bus structure, and firmly snap it into place. Verify the shunt trip wiring if remote disconnection is required, and connect conductors to #14-2 AWG Cu/Al per the panel’s labeling. After installation, perform a standard insulation and voltage check before energizing the circuit.
Key specs include a 50 A amperage rating, 120/240 V voltage rating, 10 kAIC interrupt rating, and a two-pole design with a trip flag. It is UL Listed UL 489 and HACR rated, used with Type CH Loadcenters, and compatible with #14-2 AWG Cu/Al conductors. This combination supports reliable protection for mixed-load panels in residential and light commercial settings.
Yes. The CHF250ST carries HACR rating and UL Listed UL 489 certification. HACR compatibility ensures safer operation with HVAC equipment, while UL 489 confirms standardized performance for low-voltage circuit protection. This makes the breaker suitable for HVAC-related circuits within Type CH Loadcenters and other residential or light commercial panels.
The CHF250ST includes a shunt trip, enabling remote disconnection for safety interlocks or building automation. It is a two-pole design with a shared trip mechanism, providing a common trip for all poles. This simplifies safe shutdown in emergency scenarios and helps maintain coordinated protection across multi-wire branch configurations.
The CHF250ST carries a limited lifetime warranty from Eaton, reflecting confidence in long-term performance and reliability. For field service or replacement considerations, verify distributor terms and refer to Eaton’s warranty document for coverage specifics, including any regional variations. Regular inspection and adherence to installation guidelines will maximize uptime and protection.