Eaton CHF140 Thermal Magnetic Circuit Breaker - 10 kAIC
Part Number: CHF140
Quick Summary
The Eaton CHF140 thermal magnetic circuit breaker protects residential and light commercial panels. Nuisance trips and unexpected outages complicate maintenance and erode uptime. UL 489 listing and HACR rating back its reliability, with a built-in trip flag for quick diagnostics. Designed for Type CH Loadcenters and compatible with #14-2 Cu/Al conductors, it supports safe, scalable panel protection. Its compact 3 in length and narrow 0.75 in width fit crowded enclosures. The 40 A rating and 10 kAIC interrupt level provide reliable protection for everyday loads.
Product Information
Extended Description
CHF140 Eaton: Eaton CH thermal magnetic circuit breaker,Type CHF 3/4-Inch standard circuit breaker,40 A,10 kAIC,Single-pole,120/240V,CHF,Trip flag, common breaker trip,#14-2 AWG Cu/Al,CHF,Type CH Loadcenters
Product Name
Eaton CH thermal magnetic circuit breaker
Catalog Number
CHF140
UPC
786685532134
Product Length/Depth
3 in
Product Height
3 in
Product Width
0.75 in
Product Weight
0.25 lb
Warranty
Limited lifetime residential, 1 year commercial
Compliances
HACR Rated
Certifications
UL 489
Catalog Notes
HACR Rated, Single-Pole Requires One 2/4-Inch Space, With Trip Indication.
Used with
Type CH Loadcenters
Type
Type CHF 3/4-Inch standard circuit breaker
Amperage Rating
40 A
Voltage rating
120/240 V
Trip Type
Trip flag
Circuit breaker type
CHF
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 - CHF140
Eaton type CH circuit breaker limited warranty June 2024
Feature: 40 A, 120/240 V operation with a 10 kAIC interrupt rating in a Type CHF single-pole form. Business Impact: Delivers precise overload protection for common branch circuits, reducing equipment stress and nuisance trips that disrupt occupancy and uptime. Application: Ideal for residential feeders and light commercial lighting and receptacle circuits wired into Type CH Loadcenters. Paragraph 2: Feature: Trip flag and indication for fast status. Business Impact: Quick fault identification minimizes diagnostic time and panel downtime. Application: Streamlines service in crowded panelboards where multiple breakers share space. Paragraph 3: Feature: HACR rated and UL 489 listed. Business Impact: Supports safe operation with HVAC loads and regulatory compliance, lowering the need for additional protective devices. Application: Suitable for HVAC circuits and general lighting with confidence. Paragraph 4: Feature: Compact footprint and space efficiency (3 in length, 0.75 in width; 3 in height; space for one 2/4-inch mounting). Business Impact: Saves panel real estate and simplifies retrofits in tight installations. Application: Practical in compact residential panels and CH Loadcenters. Paragraph 5: Feature: Wire size compatibility (#14-2 Cu/Al) and single-pole CHF design. Business Impact: Reduces wiring changes and accelerates installation, improving project timelines. Application: General-purpose protection for branch circuits, with a strong lifecycle value supported by a limited warranty.
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FAQs
CHF140 is a single-pole 40 A circuit breaker designed for Type CH Loadcenters. It fits in a standard 3 in body length and requires one 2/4-inch space as noted in Eaton catalog notes. The unit uses a CHF 3/4-inch format and is compatible with #14-2 Cu/Al conductors. For service technicians, the trip flag helps confirm protection status quickly.
CHF140 provides 40 A overload protection at 120/240 V with a 10 kAIC interrupt rating. It is UL 489 listed and HACR rated, designed as a single-pole CHF device. The breaker accommodates #14-2 Cu/Al conductors and is intended for Type CH Loadcenters. These specs support reliable protection for typical residential and light commercial circuits.
Yes. The CHF140 is HACR rated, which means it is suitable for HVAC and other HVAC-enabled loads in residential and light commercial panels. Its 40 A rating and 120/240 V operation cover common lighting, receptacle, and small equipment circuits. The UL 489 listing further validates safe connection to CH Loadcenters with standard wiring.
CHF140 carries UL 489 certification, confirming it meets established safety and performance standards for low-voltage circuit breakers. HACR rating indicates suitability for HVAC loads, while the trip flag provides immediate operational insight during maintenance. Together, these certifications support regulatory compliance and streamlined service workflows.
CHF140 is covered by a limited lifetime warranty for residential use and a 1-year warranty for commercial applications. This warranty supports long-term cost of ownership by reducing replacement and maintenance expenses. The unit’s robust 10 kAIC interrupt rating and compatibility with Type CH Loadcenters further enhance reliability and lifecycle value.