Eaton CHF135ST Circuit Breaker - UL Listed 489
Part Number: CHF135ST
Quick Summary
Eaton CH thermal magnetic circuit breaker protects electrical circuits in distribution panels and industrial control systems. It helps reduce nuisance trips and simplifies coordination with loadcenter arrangements while meeting strict safety standards. Certified UL Listed to UL 489, HACR rated for HVAC and motor circuits, and backed by a limited lifetime warranty. Designed for Type CHF plug-on installation in Type CH Loadcenters, with built-in shunt trip for remote signaling. This model supports 120/240 V operation, 35 A, 10 kAIC, and plug-on mounting for fast panel upgrades. The compact 2.375 in depth and 0.5 lb weight simplify retrofits, while robust construction ensures regulatory compliance and long-term reliability.
Product Information
Extended Description
CHF135ST Eaton: Eaton CH thermal magnetic circuit breaker,Type CHF plug-on circuit breaker,35 A,10 kAIC,Single-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
CHF135ST
UPC
786685708324
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
Used with
Type CH Loadcenters
Type
Type CHF plug-on circuit breaker
Amperage Rating
35 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
Single-pole
Residential and Light Commercial, Metering Products, Volume 1 Tab 4
Eaton Specification Sheet - CHF135ST
Eaton type CH circuit breaker limited warranty June 2024
Feature: Type CHF plug-on design with compatibility to Type CH Loadcenters. Business Impact: speeds installation and reduces wiring errors during panel upgrades or new builds. Application: ideal for commercial and industrial control panels, retrofit projects, and streamlined replacements. Paragraph 2: Thermal magnetic protection provides precise overload and short-circuit response. With a 35 A rating and 10 kAIC interrupt capacity, it delivers reliable protection for motors and branch circuits, cutting fault impact and downtime. In manufacturing and building automation, that translates to fewer unexpected trips and smoother production runs. Paragraph 3: Shunt trip included enables remote or automatic isolation when integrated with safety, building management, or fire alarm systems. This feature supports compliant emergency shutdown sequences and rapid decision-making during faults, reducing risk exposure. Paragraph 4: Trip flag and diagnostic friendliness simplify service and maintenance by clearly signaling tripped conditions at the panel, accelerating fault localization. Paragraph 5: UL Listed UL 489 certification ensures regulatory acceptance and traceability, while HACR rating confirms suitability for HVAC and motor circuits. The CHF135ST operates at 120/240 V, with a 35 A rating and 10 kAIC interrupt capacity, aligning with common standards. Paragraph 6: Compatibility and installation efficiency are enhanced by #14-2 AWG Cu/Al wiring compatibility and plug-on mounting, enabling straightforward integration into existing CH Loadcenters and wire harnesses.
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FAQs
The CHF135ST is a Type CHF plug-on breaker designed for Type CH Loadcenters, making it ideal for retrofit and new installations in commercial and industrial panels. It mounts directly onto CH bus stabs and uses #14-2 AWG Cu/Al conductors for 120/240 V circuits. Ensure your panel family is CH Loadcenters and follow the Eaton installation guide.
Key specs include a 35 A amperage rating, 120/240 V voltage rating, a single-pole form factor, 10 kAIC interrupt rating, and a Type CHF plug-on design. It is UL Listed to UL 489 and HACR rated, with shunt trip included for remote control integration. These specs support reliable protection for branch circuits and motors within CH Loadcenters.
Yes, CHF135ST is UL Listed under UL 489 and HACR rated, confirming regulatory compliance for HVAC and motor circuits. The device is designed for 120/240 V operation, 35 A protection, and integrates with Type CH Loadcenters. The listing ensures compatibility with standard electrical installations and reliable protection in commercial and industrial environments.
The CHF135ST includes a built-in shunt trip that enables remote or automatic isolation when connected to safety or monitoring systems. This supports emergency shutdown sequences and enhances personnel safety. For installation, wire the shunt trip per Eaton’s instructions to interface with appropriate safety controls and ensure reliable, rapid de-energization during faults.
Upgrading to CHF135ST can reduce downtime through faster panel upgrades, reliable 10 kAIC fault interruption, and fewer nuisance trips. The plug-on design minimizes retrofit labor, while UL 489 and HACR ratings support longer service life in HVAC and motor-driven applications. Over time, these factors translate into lower maintenance costs and improved system availability.