Eaton CHQ240CS Circuit Breaker - 10 kAIC UL 489
Part Number: CHQ240CS
Quick Summary
Eaton CHQ240CS circuit breaker is a classified 3/4-inch thermal magnetic solution that protects CH load centers in industrial and commercial panels. Engineers contend with space constraints, compatibility gaps, and stocking multiple breakers, so the clamshell-pack CHQ240CS helps streamline installation and procurement. UL 489 certification, a 10 kAIC interrupt rating, and a 120/240 V rating provide code-compliant fault protection and predictable response across a wide range of panel configurations. As a classified CHQ replacement and compatible with Type CH Loadcenters, this breaker supports efficient maintenance programs and reduces inventory complexity for electrical contractors and panel builders alike.
Product Information
Extended Description
CHQ240CS Eaton: 3/4" Thermal magnetic circuit breakers,Type CHQ 3/4-Inch classified replacement breaker clamshell pack,Clamshell pack,40 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
CHQ240CS
UPC
782114752968
Product Length/Depth
7.25 in
Product Height
6.5 in
Product Width
4.48 in
Product Weight
1.87 lb
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 clamshell pack
Special features
Clamshell pack
Voltage rating
120/240 V
Trip Type
Common breaker trip
Circuit breaker type
CH
Interrupt rating
10 kAIC
Main circuit breaker
CHQ
Wire size
(1) #14-8 AWG (2) #14-10 AWG Cu/Al
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 - CHQ240CS
Feature: Classified 3/4-inch CHQ 3/4-Inch replacement breaker with clamshell packaging. Business Impact: Simplifies stocking and handling, reducing labor time during panel swaps. Application: Ideal for quick replacement in CH Loadcenters where space is at a premium. Feature: Two-pole, 40 A rated device. Business Impact: Delivers precise overcurrent protection for multi-wire branch circuits, minimizing nuisance trips and maximizing equipment longevity. Application: Suitable for commercial and light-industrial panels with common trip requirements. Feature: 120/240 V operation with 10 kAIC interrupt rating. Business Impact: Ensures fast fault clearance and superior short-circuit protection, aiding code compliance and safety. Application: Used in feeders and branch circuits in CH Loadcenters across diverse environments. Feature: Replacement for Square D Type QO breakers. Business Impact: Enables cross-brand retrofits and streamlined procurement, reducing total part diversity. Application: Ideal for mixed-brand installations where CH Loadcenters prevail. Feature: Wiring compatibility: (1) #14-8 AWG and (2) #14-10 AWG Cu/Al. Business Impact: Supports standard residential and small commercial wiring practices, accelerating installation. Application: Aligns with common panel conductors and minimizes rewiring tasks. Feature: Requires two 3/4-inch spaces. Business Impact: Clear space planning reduces panel rework and ensures compliant installation. Application: Fits standard CH Loadcenter configurations in field assemblies.
Get a Quick Quote for a Eaton CHQ240CS
Chat with us on WhatsApp - fast responses guaranteed
Need to speak with someone? We'll call you back within 2 hours during business hours
Interested in Eaton CHQ240CS?
Enquire Now
FAQs
The CHQ240CS is a two-pole, 3/4-inch classified replacement breaker designed for Type CH Loadcenters. It requires two adjacent 3/4-inch spaces in the panel, matching the CH configuration. Wiring accepts one #14-8 AWG and two #14-10 AWG Cu/Al conductors, enabling straightforward field installation without panel rework.
Key specifications include 40 A current rating, 120/240 V voltage rating, and a 10 kAIC interrupt rating. It is UL 489 listed, ensuring compliance with standard breaker performance and safety requirements. This combination supports reliable fault interruption across typical commercial and light-industrial applications.
Yes. The catalog notes indicate it is a replacement option for Square D Type QO breakers. This cross-compatibility supports retrofits and reduces stocking diversity, provided the panel design accommodates two 3/4-inch spaces and the CH Series trip characteristics meet the system’s protection needs.
CHQ240CS carries UL 489 certification, which confirms compliance with recognized safety and performance standards for low-voltage circuit breakers. This certification supports code compliance in many North American installations and enhances reliability in diverse operating environments.
Using CHQ240CS consolidates parts by offering a standardized CHQ replacement option with familiar wiring, packaging, and two-space footprint. This reduces field downtime, simplifies procurement, and lowers inventory complexity while ensuring reliable protection for CH Loadcenters in both new builds and upgrades.