Eaton BRHH140 Thermal Magnetic Circuit Breaker - UL 490
Part Number: BRHH140
Quick Summary
The Eaton BRHH140 Thermal Magnetic Circuit Breaker protects 120/240 V branches in BR load centers, delivering reliable overcurrent protection for industrial panels. Users often struggle with compatibility and space constraints in retrofit projects; this unit’s plug-on design, 1-inch footprint, and common-trip capability simplify installation and reduce panel rework. Certified for UL 490 and Federal Specifications W-C376, with HACR-ready options and a 42 kAIC interrupt rating, it meets modern safety and code requirements. When paired with BR loadcenters, it supports scalable protection with minimal wiring effort, delivering dependable protection while minimizing panel depth and ongoing maintenance costs.
Product Information
Extended Description
BRHH140 Eaton: Eaton BR thermal magnetic circuit breaker,Type BR 1-Inch plug-on circuit breaker,40 A,42 kAIC,Single-pole,120/240V,BRHH,Common breaker trip,#14-4 AWG Cu/Al,BRHH,Type BR Loadcenters
Product Name
Eaton BR thermal magnetic circuit breaker
Catalog Number
BRHH140
UPC
786676002806
Product Length/Depth
3 in
Product Height
3 in
Product Width
2 in
Product Weight
0.3 lb
Warranty
Limited lifetime residential, 1 year commercial
Compliances
Federal Specifications Classification W-C376
Certifications
UL 490
Catalog Notes
10-150A. single-, two- and three-pole, selected amperageavailable in switching duty, HACR, shunt trip and high magnetic setting
Used with
Type BR Loadcenters
Type
Type BR 1-Inch plug-on circuit breaker
Amperage Rating
40 A
Voltage rating
120/240 V
Trip Type
Common breaker trip
Circuit breaker type
BR
Mounting Method
Plug-on
Interrupt rating
42 kAIC
Main circuit breaker
BR
Wire size
#14-4 AWG Cu/Al
Number of poles
Single-pole
Feature: 1‑inch plug-on mounting with a common-trip mechanism enables fast, tool-friendly installation and minimal panel modification. The business impact is reduced commissioning time and lower labor costs, which translates into quicker project turnover and improved site productivity. Application: ideal for Type BR load centers in new builds or upgrades where space is limited and speed matters. Feature: 40 A amperage rating provides precise protection for branch circuits while avoiding nuisance trips in normal operation. The business impact is improved equipment protection and reduced unplanned downtime, particularly in light commercial and industrial panels. Application: suitable for residential feeders or small motor circuits within BR load centers. Feature: 42 kAIC interrupt rating ensures robust fault current handling and safer disconnection. The business impact enhances electrical safety margins and compliance with short-circuit performance standards in distribution panels. Application: supports higher fault current levels in industrial spaces and service entrances that use BR-type protection. Feature: 120/240 V, single-pole configuration with plug-on compatibility. The business impact is versatile for multi-branch circuits and easy integration with existing field wiring; reduces inventory complexity by using a common family. Application: BR load centers across residential, commercial, and light industrial installations. Feature: Accepts #14-4 AWG Cu/Al conductors. The business impact simplifies wiring choices and stock management, supports flexible conductor combinations, and reduces rewiring costs. Application: enabling quick tie-ins for branch circuits in BR panels. Feature: UL 490 certification and Federal Specifications W-C376 compatibility provide regulatory confidence. The business impact helps ensure compliance with code requirements and supports warranty terms. Application: suitable for code-compliant installations and long-term maintenance planning.
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FAQs
BRHH140 is designed for Type BR load centers and uses a 1-inch plug-on mounting. It accepts Cu/Al conductors up to #14-4 and enables quick replacement in existing panels, reducing downtime during retrofit projects and simplifying field wiring work compared with larger, non plug-on alternatives.
BRHH140 features a 40 A amperage rating, operates at 120/240 V, and has a 42 kAIC interrupt rating. It is a single-pole, common-trip breaker designed for BR load centers, delivering reliable protection for moderate-load circuits and streamlined integration with BR main devices.
Yes, the BR family includes HACR-capable options and switching-duty variants. To use HACR or switching duty, verify the catalog notes for the exact variant and ensure the panel supports the selected setting, ensuring compliance with motor control and energy efficiency requirements.
BRHH140 carries UL 490 certification and complies with Federal Specifications W-C376. These standards provide regulatory confidence for safety, performance, and interoperability in BR load centers used in commercial and light industrial installations.
The product carries a limited lifetime residential warranty and a 1-year commercial warranty. For long-term reliability, periodic inspection of connections and trip settings during panel maintenance is recommended to sustain peak protection performance and minimize unplanned outages.