Eaton CL240 Classified Thermal Magnetic Breaker - UL 489
Part Number: CL240
Quick Summary
Eaton Classified 1 inch thermal magnetic circuit breaker protects electrical circuits in CH loadcenters. Replacing legacy breakers is challenging due to compatibility, coordinated tripping, and the risk of nuisance trips. UL 489 certified, Type CH loadcenter compatibility, and common-trip operation ensure reliable protection for 120/240 V systems. The CL240 offers 40 A, 10 kAIC, two-pole design, and is a trusted replacement for Square D Homeline, GE THQ, and other brands. This alignment with Eaton’s CL family supports faster upgrades, improved safety, and predictable performance across residential, commercial, and light industrial panels. It also reduces inventory complexity by aligning with existing components.
Product Information
Extended Description
CL240 Eaton: Eaton Classified 1" thermal magnetic circuit breaker, Type CL 1-Inch classified replacement breaker, 40 A, 10 kAIC, two-pole, 120/240V, CL, common breaker trip, #14-4 AWG Cu/Al, CL, Type CH loadcenters
Product Name
Eaton Classified 1" thermal magnetic circuit breaker
Catalog Number
CL240
UPC
786676011679
Product Length/Depth
3 in
Product Height
3 in
Product Width
2 in
Product Weight
0.5 lb
Warranty
Limited lifetime residential, 1 year commercial
Certifications
UL 489
Catalog Notes
Replacement for Square D Homeline, GE Type THQ, Crouse-Hinds Type MP, Thomas and Betts Type TB, Murray Type MP, ITE/Siemens Type QP. Requires Two 1-inch (25.4 mm) spaces.
Used with
Type CH Loadcenters
Type
Type CL 1-Inch classified replacement breaker
Amperage Rating
40 A
Voltage rating
120/240 V
Trip Type
Common breaker trip
Circuit breaker type
CH
Interrupt rating
10 kAIC
Main circuit breaker
CL
Wire size
#14-4 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 - CL240
Feature: 1-inch width fits two spaces and is compatible with Type CH loadcenters. → Impact: enables compact panel layouts, reduces retrofit complexity, and lowers installation time. → Application: ideal for residential and light commercial CH panels where space is at a premium. Feature: 40 A amperage rating. → Impact: provides robust protection for common branch circuits and aligns with typical circuit sizing in CH panels. → Application: used for 120/240 V circuits in feeders and branch circuits. Feature: 10 kAIC interrupt rating. → Impact: minimizes fault current damage and supports code-required short-circuit protection. → Application: protects feeders and loads in commercial spaces with higher fault currents. Feature: Common-trip two-pole design. → Impact: ensures coordinated tripping across multi-pole circuits and simplifies wiring. → Application: essential for multi-wire branch circuits and essential loads in busy panels. Feature: Replacement compatibility notes. → Impact: reduces downtime by replacing legacy breakers (Square D Homeline, GE THQ, etc.). → Application: panel upgrades and maintenance across mixed-brand environments. Feature: Wire size compatibility #14-4 AWG Cu/Al. → Impact: supports typical residential and light commercial wiring. → Application: branch circuits in CH loadcenters and similar panel configurations. Feature: Physical dimensions and weight (3 in L, 3 in H, 2 in W; 0.5 lb). → Impact: compact footprint improves serviceability in crowded panels. → Application: fits standard CL loadcenter spaces during installation or replacement.
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FAQs
The CL240 is designed for CH loadcenters and fits two spaces within the panel. It replaces multiple legacy breakers and is intended for 120/240 V circuits. When planning a retrofit, verify space availability and ensure two 1-inch mounting positions are available to maintain proper trip coordination.
CL240 is a 40 A, two-pole circuit breaker with a 120/240 V rating and a 10 kAIC interrupt rating. It is UL 489 listed and features a common-trip mechanism for coordinated protection across poles, suitable for CH loadcenters and related panelboards.
Yes, CL240 is positioned as a classified replacement for several legacy breakers, including Square D Homeline and GE THQ types. It requires two 1-inch spaces and uses #14-4 AWG Cu/Al conductors, making it a practical option for upgrading to an Eaton CL family solution in residential applications.
CL240 carries UL 489 certification, confirming compliance with recognized safety and performance standards for low-voltage circuit breakers. This certification supports code compliance, improved safety, and reliability in electrical installations, particularly inCH loadcenter environments.
By aligning with Eaton’s CL line and offering compatibility with common panel brands, CL240 reduces downtime during replacements and upgrades. Its compact 1-inch width, high interrupt rating, and standard wiring support enable faster service, lower spare-part variety, and predictable long-term maintenance costs in commercial and light-industrial facilities.