Eaton CHQ235 Thermal Magnetic Circuit Breaker - UL 489
Part Number: CHQ235
Quick Summary
Eaton CHQ235 Thermal Magnetic Circuit Breaker is a classified 3/4-inch device that protects circuits in Type CH load centers. This replacement breaker reduces downtime and installation errors by delivering a guaranteed compatible CHQ235 solution for legacy Square D QO panels. UL 489 certification ensures safe interrupt performance, making this unit a compliant choice for CH load centers and a proven replacement. Engineered with a 35 A rating and a 10 kAIC interrupt capacity, it supports reliable protection in commercial and light industrial panels. Applicable for Type CH Loadcenters and a direct cross-reference for Square D QO, it helps streamline procurement and field service.
Product Information
Extended Description
CHQ235 Eaton: 3/4" Thermal magnetic circuit breakers,Type CHQ 3/4-Inch classified replacement breaker,Ground fault,35 A,10 kAIC,Two-pole,120/240V,CHQ,Common breaker trip,(1) #14-8 AWG, (2) #14-10 AWG Cu/Al,CHQ,Type CH Loadcenters
Product Name
Eaton Classified 3/4" thermal magnetic circuit breaker
Catalog Number
CHQ235
UPC
782113010939
Product Length/Depth
2.5 in
Product Height
3 in
Product Width
0.75 in
Product Weight
0.6 lb
Warranty
Limited lifetime residential, 1 year commercial
Certifications
UL 489
Catalog Notes
Replacement for Square D Type QO Breakers. Requires two 3/4-inch (19.1 mm) spaces.
Used with
Type CH Loadcenters
Type
Type CHQ 3/4-Inch classified replacement breaker
Special features
Ground fault
Amperage Rating
35 A
Voltage rating
120/240 V
Trip Type
Common breaker trip
Circuit breaker type
CH
Interrupt rating
10 kAIC
Main circuit breaker
CHQ
Wire size
(2) #14-10 AWG Cu/Al (1) #14-8 AWG
Number of poles
Two-pole
Standard circuit breaker catalog numbers - 5651B63SH09
Residential and Light Commercial, Load centers and Circuit Breakers, Volume 1 Tab 1
Eaton Specification Sheet - CHQ235
Feature: Classified 3/4-inch CHQ235 replacement breaker fits Type CH Loadcenters. Business Impact: Space-efficient design reduces panel congestion and simplifies retrofits, lowering install time and labor costs. Application: Ideal for replacing older QO or CH breakers in CH Loadcenters across commercial and light-industrial facilities. Feature: 35 A amperage rating provides targeted protection for circuits in small to mid-size loads. Business Impact: Prevents nuisance trips on typical branch circuits, improving reliability and reducing warranty claims. Application: Suitable for feeders and branch circuits in commercial spaces, manufacturing circuits, and equipment panels with modest current draws. Feature: 10 kAIC interrupt rating ensures high fault-current withstand. Business Impact: Enhances safety and reduces risk of damage in panels connected to large power sources. Application: Critical in industrial control panels and service entrances where fault currents can exceed 10 kA. Feature: Ground fault capability enhances protection for personnel and equipment. Business Impact: Helps meet safety standards and reduces downtime due to ground-fault trips. Application: Beneficial for damp environments or subpanels with earth leakage concerns. Feature: Wiring with two #14-10 Cu/Al and one #14-8 AWG leads. Business Impact: Flexible wiring options ease field termination and enable both copper and aluminum conductors. Application: Suitable for standard residential/commercial service terminations in CHQ235 installations. Feature: Replacement compatible with CH Loadcenters and cross-reference to Square D QO breakers. Business Impact: Streamlines procurement and stocking, reducing SKU variety and improving response times. Application: Ideal for retrofit projects in facilities with mixed-brand panels and CH Loadcenter architecture.
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FAQs
Yes. CHQ235 is designed as a classified replacement for CH Loadcenters and is commonly cross-referenced to Square D QO breakers. It occupies two 3/4-inch spaces and accepts wiring up to (2) #14-10 AWG Cu/Al and (1) #14-8 AWG. When installing, verify panel labeling and ensure the service is de-energized before wiring. This minimizes downtime and standardizes retrofits across mixed-brand panels.
CHQ235 is a 35 A, 120/240 V circuit breaker with a 10 kAIC interrupt rating, designed as a two-pole device with common trip. It includes a ground fault option and uses CH-type characteristics. These specs support reliable protection for typical commercial and light-industrial circuits while meeting UL 489 safety standards for intrusion and fault handling.
Yes. The 10 kAIC interrupt rating and 120/240 V operation make CHQ235 appropriate for industrial control panels where fault currents can be substantial. The two-pole, common-trip design provides cohesive protection for paired conductors, while the ground fault feature adds equipment and personnel safety in harsh or damp environments common in industrial settings.
CHQ235 carries UL 489 certification, ensuring compliance with established electrical safety and performance standards for low-voltage circuit breakers. This certification supports code compliance in both commercial and industrial installations and provides confidence during inspections and maintenance programs.
When installing CHQ235, ensure the panel has space for two 3/4-inch widths as required by the catalog notes. Prepare wiring with (2) #14-10 AWG Cu/Al and (1) #14-8 AWG, and maintain proper torque per manufacturer guidelines. Confirm compatibility with Type CH Loadcenters and verify cross-reference suitability for any QO legacy panels to minimize rework and downtime.