Eaton CL145 Circuit Breaker - 1-Inch Classified
Part Number: CL145
Quick Summary
Eaton CL145 circuit breaker provides thermal-magnetic protection for CH load centers in residential and light-commercial panels. When retrofitting legacy panels, compatibility and space constraints can derail projects, but the CL145’s 1-inch footprint and classified replacement design enable a straightforward, code-compliant retrofit. It carries UL 489 certification for safety and is rated for 45 A at 120/240 V with a 10 kAIC interrupt capacity, supporting demanding branch circuits. This combination delivers faster installs, reduces panel downtime, and improves long-term reliability for electrical protection in commercial and industrial settings. For procurement and maintenance teams, the CL145 offers cross-brand compatibility with modernized protection in a compact form factor.
Product Information
Extended Description
CL145 Eaton: Eaton Classified 1" thermal magnetic circuit breaker, Type CL 1-Inch classified replacement breaker, 45 A, 10 kAIC, single-pole, 120/240V, CL, #14-4 AWG Cu/Al, CL, Type CH loadcenters
Product Name
Eaton Classified 1" thermal magnetic circuit breaker
Catalog Number
CL145
UPC
786676011600
Product Length/Depth
3 in
Product Height
3 in
Product Width
1 in
Product Weight
0.3 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 1-inch (25.4 mm) space.
Used with
Type CH Loadcenters
Type
Type CL 1-Inch classified replacement breaker
Amperage Rating
45 A
Voltage rating
120/240 V
Circuit breaker type
CH
Interrupt rating
10 kAIC
Main circuit breaker
CL
Wire size
#14-4 AWG Cu/Al
Number of poles
Single-pole
Standard circuit breaker catalog numbers - 5651B63SH09
Residential and Light Commercial, Load centers and Circuit Breakers, Volume 1 Tab 1
Eaton Specification Sheet - CL145
Feature: 1-Inch classified replacement breaker for CH load centers. Business Impact: Saves panel space and simplifies retrofits, reducing installation time and field risk. Application: Residential and light commercial panels needing a compact, cross-compatible solution. Feature: 45 A current rating. Business Impact: Provides appropriate protection for typical branch circuits while enabling efficient load management. Application: Control circuits in CH load centers and similar installations. Feature: 120/240 V operating voltage. Business Impact: Supports standard single-phase electrical systems, enabling universal compatibility with common home and small business panels. Application: Household feeders and light commercial circuits. Feature: 10 kAIC interrupt rating. Business Impact: Enhances fault-current resilience, improving safety margins in higher-demand panels. Application: Areas with higher short-circuit potential. Feature: Wire size compatibility #14-4 AWG Cu/Al. Business Impact: Broad wiring compatibility reduces rework and inventory needs. Application: Field wiring in CH load centers and replacement scenarios. Feature: Replacement for multiple brands (catalog notes). Business Impact: Streamlines modernization by allowing cross-brand use without panel replacement. Application: Retrofit projects across Square D Homeline, GE THQ, and other major brands. Feature: UL 489 listed. Business Impact: Demonstrates conformance to widely recognized safety standards, supporting compliance and installer confidence. Application: Any installation requiring certified protection.
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FAQs
The CL145 is designed as a classified replacement for several legacy breakers and is commonly used in Type CH load centers. It is compatible with 1-inch spaces and is intended to provide a straightforward retrofit in residential and light commercial panels, reducing the risk of mismatches during panel upgrades.
Key specs include a 45 A amperage rating, 120/240 V voltage rating, 10 kAIC interrupt capacity, and a single-pole configuration. It is a CL-type, classified replacement breaker designed for CH load centers, offering reliable protection for standard branch circuits.
Yes. The CL145 is suitable for residential and light commercial applications where CH load centers are used. Its 1-inch footprint and compatibility with 1-inch spaces make it a practical choice for modernizing panels without full panel replacement.
The CL145 carries UL 489 certification, ensuring compliance with widely recognized safety standards for low-voltage circuit breakers and enabling qualified installer acceptance across typical electrical installations.
The CL145 offers cost savings through cross-brand compatibility, reducing inventory needs and downtime during brownfield upgrades. Its durable thermal-magnetic design and UL 489 certification support long-term reliability, minimizing maintenance overhead for building operators.