Eaton Type BR Plug-On Circuit ...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$400.48
Eaton Type BR Plug-On Circuit Breaker, Three-Pole, 10 kAIC

Eaton Type BR Plug-On Circuit Breaker, Three-Pole, 10 kAIC

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Model: BR390

In Stock (leaves warehouse same day if ordered before 3pm ET)

$400.48
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Eaton Type BR Plug-On Circuit Breaker, Three-Pole, 10 kAIC

The Eaton Type BR 1-Inch plug-on circuit breaker is a thermal magnetic breaker engineered for use with Type BR loadcenters. This three-pole unit carries a 240V voltage rating and a 10 kAIC interrupt rating, with a wire size range of #4-1/0 AWG Cu/Al, making it suitable for common residential and light commercial branch and feeder circuits. Built to UL 489 standards and Federal Specification W-C375, it delivers dependable overcurrent protection with common breaker trip functionality.

Key Features

  • Plug-On Mounting: 1-Inch plug-on design for quick, secure installation into compatible Type BR loadcenters.
  • Three-Pole Configuration: Three-pole construction with common breaker trip for coordinated multi-phase circuit protection.
  • Voltage Rating: Rated 240V - 240V for standard residential and light commercial electrical systems.
  • Interrupt Rating: 10 kAIC interrupt rating provides reliable fault-current protection.
  • Wire Size Compatibility: Accepts #4-1/0 AWG Cu/Al conductors for flexible circuit sizing.
  • Compact Footprint: Product width, length/depth, and height each measure 3 in for space-efficient panel layouts.
  • Circuit Breaker Type: Main circuit breaker type BR for direct compatibility with Type BR loadcenter systems.

Certifications & Compliance

  • UL 489 Listed
  • Federal Specifications Classification W-C375

Technical Specifications

  • Quantity: 28
  • Main circuit breaker: BR
  • Circuit breaker type: BR
  • Department: Electrical

Typical Applications

  • Residential Loadcenter Circuit Protection
  • Light Commercial Electrical Panels
  • Branch and Feeder Circuit Wiring
  • Panelboard and Loadcenter Retrofits
  • New Construction and Renovation Electrical Work

Why Eaton?

Eaton Type BR circuit breakers are built for dependable, code-compliant performance in Type BR loadcenter systems, backed by UL 489 listing and Federal Specification W-C375 compliance. The common breaker trip design and 10 kAIC interrupt rating give electrical professionals confidence in consistent overcurrent protection across residential and light commercial installations.

Manufacturer Resources

Product Specs

Product Width:
3 in
Used with:
Type BR Loadcenters
Item Quantity:
28
Amperage Rating:
90 A
Voltage Rating:
240V
Product Length/Depth:
3 in
Product Height:
3 in
Product Type:
Circuit Breaker
Mounting Method:
Plug-on
Number of poles:
Three-pole
Main circuit breaker:
BR
Interrupt rating:
10 kAIC
Compliances:
Federal Specifications Classification W-C375
Wire Size:
#4-1/0 AWG Cu/Al
Circuit breaker type:
BR
Trip Type:
Common breaker trip
Certifications:
UL 489
Department:
Electrical
Configuration:
Three-Pole
Connection Type:
Plug-On
Standards:
UL 489
Product Group:
Circuit Breakers
Product Subgroup:
Electrical

Eaton BR390 – Frequently Asked Questions

1) Will an Eaton BR390 breaker fit a Type CH or a Square D panel?
No. The BR390 is a Type BR plug-on breaker and it is made to plug into Eaton Type BR loadcenters only. Type CH panels use a different bus and interior dimension, and Square D QO or Homeline panels take their own breakers. Putting a BR breaker in anything other than a BR-rated loadcenter is not a listed installation. Check the label inside your panel door for the breaker types it accepts.
2) What amperage is the Eaton BR390 three-pole breaker?
90 amps, three-pole, rated 240V. That is a feeder-size breaker, not a general branch circuit device, so it typically lands on a subpanel feed, a three-phase motor load, or a large piece of equipment on a BR loadcenter.
3) What wire size can I land in the Eaton BR390 breaker lugs?
The lugs accept #4 through 1/0 AWG, copper or aluminum. At a 90 amp rating that covers the usual feeder conductors either way, and because the lugs are dual rated you do not need a separate part to run AL. Torque the lugs to the values marked on the breaker.
4) Can I use a three-pole BR breaker on a single-phase 120/240V panel?
A three-pole breaker like the BR390 is meant for three-phase supply. A standard single-phase 120/240V residential loadcenter only has two bus phases, so the third pole has nothing to land on. For single-phase feeders and 240V loads you want a two-pole BR breaker at the amperage you need.
5) Does the BR390 trip all three poles together?
Yes. It uses a common breaker trip, so a fault or overload on any one pole opens all three at once. That is what you need for three-phase equipment and motor loads, where losing one leg while the other two stay energized can single-phase a motor and burn it out.
6) Is the Eaton BR390 UL listed for a permit inspection?
It is UL 489 listed and also meets Federal Specification W-C375, which is what government and institutional specs commonly call out. UL 489 is the molded-case circuit breaker standard an inspector expects on a branch or feeder overcurrent device.
7) How much space does a BR390 take in the panel?
It is a plug-on device measuring 3 x 3 x 3 inches, and being three-pole it occupies three pole spaces on the bus. Count three open adjacent spaces, all on the same run, before you order.
8) Can the BR390 be used as a main breaker?
It is catalogued as a BR main circuit breaker type and is a plug-on device, so it can serve as a main in a BR loadcenter that is built to accept a plug-on main, as well as a feeder breaker in the branch positions. On main-lug-only panels there is no main position at all, and on factory main-breaker panels the main is usually a bolt-in or dedicated position.
How fast can I get the Eaton BR390 delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the continental U.S. Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit, reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the Eaton BR390 come with a warranty?
Absolutely. The Eaton BR390 is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the Eaton BR390?
You can call, text, or email our expert support team for fast answers. We’re here to help with product selection, installation tips, and troubleshooting. Contact Us
Why buy the Eaton BR390 from ZenSupply?
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