Eaton BRHH390 BR Thermal Magnetic Circuit Breaker - UL 490
Part Number: BRHH390
Quick Summary
Eaton BR thermal magnetic circuit breaker protects electrical panels and distribution systems in industrial and commercial environments. When space is tight or trip coordination is critical, its three-pole, 1-Inch plug-on design minimizes wiring and downtime. This unit is UL 490 listed and compliant with Federal Specifications W-C376, with HACR-capable options and shunt-trip or high-magnetic settings available. Used with Type BR Loadcenters and supporting #4-1/0 AWG Cu/Al, it delivers reliable protection at 120/240 V while enabling straightforward installation and serviceability for your facility. The design emphasizes availability, interchangeability, and ease of stocking—factors that translate into reduced maintenance costs and improved uptime across manufacturing lines and distribution panels.
Product Information
Extended Description
BRHH390 Eaton: Eaton BR thermal magnetic circuit breaker,Type BR 1-Inch plug-on circuit breaker,90 A,42 kAIC,Three-pole,120/240V,BRH,Common breaker trip,#4-1/0 AWG Cu/Al,BRH,Type BR Loadcenters
Product Name
Eaton BR thermal magnetic circuit breaker
Catalog Number
BRHH390
UPC
786676003094
Product Length/Depth
3 in
Product Height
3 in
Product Width
3 in
Product Weight
2 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
90 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
BRH
Wire size
#4-1/0 AWG Cu/Al
Number of poles
Three-pole
The BRHH390 employs a thermal magnetic trip mechanism with a 90 A rating and a 42 kAIC interrupt capacity, delivering precise overload protection while withstanding high fault currents. This combination reduces nuisance trips and equipment damage, supporting reliable operation of motors and controls in commercial and light industrial loads. Its common-trip, three-pole configuration ensures coordinated disconnection across phases, simplifying panel protection and improving safety in complex drive or control circuits. The 1-inch plug-on design offers fast, tool-free installation, minimizes wiring errors, and enhances field serviceability within Type BR Loadcenters. Compatibility with #4-1/0 AWG Cu/Al conductors broadens wiring options and reduces termination points, cutting labor time during upgrades or expansion projects. UL 490 certification and Federal Specifications W-C376 compliance reinforce regulatory alignment, easing audits and warranty validation. Availability of HACR-rated, shunt-trip, and high-magnetic settings addresses switching-duty needs for diverse loads, while the robust 42 kAIC rating supports critical industrial processes with improved fault tolerance. A practical warranty mix—limited lifetime for residential use and a one-year commercial warranty—helps manage total cost of ownership and maintenance budgeting for facilities with ongoing protection needs.
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FAQs
BRHH390 is a three-pole, 1-Inch plug-on breaker designed for Type BR Loadcenters. It accepts #4-1/0 AWG Cu/Al conductors and operates at 120/240 V. With a common-trip configuration and a 90 A rating, it installs quickly in BR panels, reducing field wiring errors and downtime during upgrades or new builds.
The BRHH390 provides a 90 A amperage rating with a common-breaker trip. It offers a 42 kAIC interrupt rating, suitable for protecting equipment against high fault currents. The device is a three-pole, 1-Inch plug-on breaker for efficient, coordinated protection in BR Loadcenters at 120/240 V.
Ideal for Type BR Loadcenters in industrial control panels and commercial electrical distributions, the BRHH390 supports medium-to-large branch circuits and provides reliable protection for motors, heaters, and control devices. Its plug-on design and generous wire-size compatibility make it suitable for new installations and panel upgrades alike.
BRHH390 carries UL 490 certification and complies with Federal Specifications W-C376, ensuring safety and regulatory alignment. The catalog notes also indicate HACR options and other settings for switching duties, which helps with building code compliance and system-level safety verifications.
With a durable trip mechanism, robust fault protection, and straightforward plug-on installation, BRHH390 minimizes downtime and maintenance labor. The availability of common-trip protection reduces miscoordination risks, and the warranty mix supports lifecycle budgeting for facilities, contributing to a favorable total cost of ownership over the panel’s service life.