Eaton CHQ150 Thermal Breaker - UL 489 10kAIC
Part Number: CHQ150
Quick Summary
The Eaton CHQ150 Thermal Breaker protects CH loadcenters by interrupting faults in residential and light commercial panels. Choosing the wrong replacement can lead to nuisance trips, misfit spaces, or noncompliance with wiring standards. This model is UL 489 listed, designed for Type CH Loadcenters, and serves as a classified replacement for Square D QO breakers with a 3/4-inch footprint. For installers, space efficiency and proven compatibility are critical, and a trusted cross-reference reduces field rework. The CHQ150 offers 50 A, 120/240 V, single-pole protection with a 10 kAIC interrupt rating, delivering reliable protection while maximizing panel density and simplifying procurement.
Product Information
Extended Description
CHQ150 Eaton: 3/4" Thermal magnetic circuit breakers,Type CHQ 3/4-Inch classified replacement breaker clamshell pack,Ground fault,50 A,10 kAIC,Single-pole,120/240V,CHQ,(1) #14-8 AWG, (2) #14-10 AWG Cu/Al,Q30,CHQ,Type CH Loadcenters
Product Name
Eaton Classified 3/4" thermal magnetic circuit breaker
Catalog Number
CHQ150
UPC
782113010885
Product Length/Depth
2.5 in
Product Height
3 in
Product Width
0.8 in
Product Weight
0.3 lb
Warranty
Limited lifetime residential, 1 year commercial
Certifications
UL 489
Catalog Notes
Replacement for Square D Type QO Breakers. Requires one 3/4-inch (19.1 mm) space.
Used with
Type CH Loadcenters
Type
Type CHQ 3/4-Inch classified replacement breaker clamshell pack
Special features
Ground fault
Amperage Rating
50 A
Voltage rating
120/240 V
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
Single-pole
Quantity
30
Standard circuit breaker catalog numbers - 5651B63SH09
Residential and Light Commercial, Load centers and Circuit Breakers, Volume 1 Tab 1
Eaton Specification Sheet - CHQ150
Space-efficient design: The 3/4-inch footprint fits tight panel cavities, enabling more circuits per enclosure and reducing cabinet width in retrofit projects. Business impact: lower enclosure costs and easier coordination with limited real estate on the panelboard. Application: ideal for CH Loadcenters in compact residential and light commercial spaces. Ground fault protection is included, delivering enhanced safety by detecting current imbalances and triggering rapid disconnection; benefit: reduced shock risk and improved code compliance in damp or wet locations. Application: kitchens, basements, garages and outdoor panels where moisture and incidental contact occur. With a 50 A rating and 120/240 V capability, this breaker handles typical branch circuits while maintaining strong interrupt performance (10 kAIC); impact: higher fault current margin and safer startup for critical circuits. Compatibility and cross-reference: marketed as a classified replacement for Square D QO breakers and purpose-built for Type CH Loadcenters; benefit: smoother procurement and faster commissioning with familiar form factors. Durability and warranty: UL 489 listing, limited lifetime residential warranty and 1-year commercial warranty; impact: lower total cost of ownership and predictable service life. Wire compatibility: supports (2) #14-10 Cu/Al and (1) #14-8 Cu/Al; application: enables flexible wiring schemes and simplified field modifications in mixed-material environments.
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FAQs
CHQ150 is designed for Type CH Loadcenters and serves as a classified replacement for Square D QO breakers. It occupies a single 3/4-inch space and accepts two conductors in Cu/Al per the rated wiring scheme. Installation should follow Eaton's guidelines, ensuring the breaker seats firmly in a CH bus and that panel labeling reflects the updated protection device.
CHQ150 provides 50 A protection with a 120/240 V rating, single-pole operation, and a 10 kAIC interrupt rating. It is UL 489 listed, and is intended for CH Loadcenters. The device supports wiring with (2) #14-10 Cu/Al and (1) #14-8 Cu/Al conductors, enabling flexible circuit connections while maintaining safe fault interruption.
Yes, CHQ150 includes ground fault protection as a feature. This is advantageous in areas with higher shock risk or moisture exposure (kitchens, basements, garages, outdoor panels). Ground fault capability helps quickly disconnect faulting circuits, meeting or exceeding basic safety requirements for many commercial and residential installations.
CHQ150 carries UL 489 certification, which confirms compliance with established electrical safety standards for low-voltage circuit breakers. This listing is a key requirement for most building codes and insurance inspections in residential and light commercial environments, helping ensure reliable protection and standard conformity.
CHQ150 carries a limited lifetime residential warranty and a 1-year commercial warranty, reducing long-term ownership risk. Combined with its cross-reference capability and durable build, this translates to lower maintenance costs and predictable replacement cycles, especially during panel upgrades or retrofits where downtime must be minimized.