Eaton CL125 Classified 1-Inch Circuit Breaker - UL 489
Part Number: CL125
Quick Summary
The Eaton Classified 1-Inch thermal magnetic circuit breaker protects CH load centers by providing reliable overcurrent protection for 120/240 V systems. When replacement options fail to fit space or match legacy specifications, downtime and field rework can erode project margins. UL 489 certified and designed to replace GE THQ, Crouse-Hinds MP, Thomas and Betts TB, Murray MP, and ITE/Siemens QP types, the CL125 offers tested interchangeability with confidence. With a 25 A rating, 10 kAIC interrupt capacity, and a single-pole configuration, it fits a single 1-inch space and supports #14-4 AWG Cu/Al wiring in CL load centers. This combination reduces spare-part inventories and simplifies procurement for industrial electrical protection and circuit-control applications.
Product Information
Extended Description
CL125 Eaton: Eaton Classified 1" thermal magnetic circuit breaker, Type CL 1-Inch classified replacement breaker, 25 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
CL125
UPC
786676011563
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 GE Type THQ, Crouse-Hinds Type MP, Thomas and Betts Type TB, Murray Type MP, ITE/Siemens Type QP. Requires one 1-inch (25.4 mm) space.
Used with
Type CH Loadcenters
Type
Type CL 1-Inch classified replacement breaker
Amperage Rating
25 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 - CL125
Feature CL125 is a classified replacement breaker designed for 1-inch spaces. Business Impact It enables seamless interchange with CH load centers, reducing downtime and inventory complexity. Application Used in 120/240 V residential and light commercial panels where space is at a premium. Feature 25 A amperage rating with a 10 kAIC interrupt capacity. Business Impact Provides robust short-circuit protection for branch circuits while meeting current code requirements. Application Ideal for low-to-moderate load circuits in CH load centers and similar panel configurations. Feature Single-pole configuration and 1-inch width. Business Impact Maximizes panel density and simplifies field installation in tight spaces. Application Suitable for standard single-phase distribution in residential or light commercial installations. Feature Wire size compatibility #14-4 AWG Cu/Al. Business Impact Enables direct wiring with common conductor sizes, reducing the need for adapters. Application Common in branch circuit protection where Cu/Al conductors are used. Feature UL 489 certification and catalog notes for cross-compatibility. Business Impact Ensures compliance with essential safety standards and broad compatibility with legacy breakers. Application Streamlines replacement planning and procurement. Feature Replacement for legacy GE THQ, Crouse-Hinds MP, Thomas and Betts TB, Murray MP, ITE/Siemens QP. Business Impact Minimizes costly panel retrofits by providing a proven substitute. Application Useful in mixed-manufacturer environments and retrofits.
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FAQs
CL125 is a classified 1-Inch replacement breaker designed specifically for CH load centers. It requires one 1-inch space in the panel and is compatible with Type CH configurations, ensuring a straightforward swap without panel modifications or additional adapters.
The CL125 provides a 25 A amperage rating, 120/240 V voltage rating, a single-pole construction, and a 10 kAIC interrupt rating. These specs support typical branch circuits while delivering reliable protection against overcurrent and short-circuit events.
Yes. The CL125 is cataloged as a replacement for GE Type THQ, Crouse-Hinds Type MP, Thomas and Betts Type TB, Murray Type MP, and ITE/Siemens Type QP, enabling cross-brand substitution in many CH load centers.
The CL125 is UL 489 certified, ensuring safety compliance for low-voltage circuit protection. It carries Eaton’s standard warranty terms of limited lifetime residential and 1-year commercial coverage, supporting long-term reliability in diverse installations.
The CL125 supports #14-4 AWG Cu/Al conductors, aligning with common residential and small commercial wiring practices. It is designed for single-pole operation and CL load center compatibility, simplifying field installations and inventory management.