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Eaton / Cutler-Hammer BR390 Miniature Circuit Breaker
- 90A
- 3 Pole
- Plug-On
Eaton / Cutler-Hammer
BR390
Miniature Circuit Breaker
Brand
Eaton / Cutler-Hammer
SKU
BR390
Quantity
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Eaton / Cutler-Hammer BR390 - 90A 3 Pole Miniature Circuit Breaker
New
Quantity
Quantity
Eaton / Cutler-Hammer BR390 - 90A 3 Pole Miniature Circuit Breaker
New
Quantity
| Brand | Eaton / Cutler-Hammer |
|---|---|
| Part Number | BR390 |
| Series | BR |
| Amperage | 90A |
| Poles | 3 |
| Mounting Style | Plug-On |
| Voltage | 240VAC |
| Phase | 3 |
| AIC Rating | 10kA @ 240VAC |
| Terminal Type | Box Lugs |
|---|---|
| For Use With | Type BR Load Centers |
| Wire Gauge | 4 AWG - 1/0 AWG (Cu/Al) |
| Max Wire | 1/0 AWG |
| Min Wire | 4 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed Thermal, Fixed Magnetic |
| Available Options | Padlock Attachment, Handle Lock |
|---|---|
| Standards | UL 489, Federal Specification W-C375 |
| Approval | UL |
| Temp Rating | 60C, 75C |
| Construction Features | Common Trip, HACR Rated |
Sold out
Quantity
Eaton / Cutler-Hammer BR390 - 90A 3 Pole Miniature Circuit Breaker
Re-Certified
Quantity
| Brand | Eaton / Cutler-Hammer |
|---|---|
| Part Number | BR390-R |
| Series | BR |
| Amperage | 90A |
| Poles | 3 |
| Mounting Style | Plug-On |
| Voltage | 240VAC |
| Phase | 3 |
| AIC Rating | 10kA @ 240VAC |
| Terminal Type | Box Lugs |
|---|---|
| For Use With | Type BR Load Centers |
| Wire Gauge | 4 AWG - 1/0 AWG (Cu/Al) |
| Max Wire | 1/0 AWG |
| Min Wire | 4 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed Thermal, Fixed Magnetic |
| Available Options | Padlock Attachment, Handle Lock |
|---|---|
| Standards | UL 489, Federal Specification W-C375 |
| Approval | UL |
| Temp Rating | 60C, 75C |
| Construction Features | Common Trip, HACR Rated |
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Description
Delivering reliable circuit protection, the Eaton BR390 is a 90A miniature breaker designed for commercial environments. It utilizes thermal-magnetic trip elements to safeguard 240VAC systems against overloads. This three-pole breaker features a plug-on mounting configuration, allowing it to snap into compatible Type BR load centers. The box lug terminals accept 4-1/0 AWG copper or aluminum wiring.Specifications
| Brand | Eaton / Cutler-Hammer |
|---|---|
| Part Number | BR390 |
| Series | BR |
| Amperage | 90A |
| Poles | 3 |
| Mounting Style | Plug-On |
| Voltage | 240VAC |
| Phase | 3 |
| AIC Rating | 10kA @ 240VAC |
| Terminal Type | Box Lugs |
|---|---|
| For Use With | Type BR Load Centers |
| Wire Gauge | 4 AWG - 1/0 AWG (Cu/Al) |
| Max Wire | 1/0 AWG |
| Min Wire | 4 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed Thermal, Fixed Magnetic |
| Available Options | Padlock Attachment, Handle Lock |
|---|---|
| Standards | UL 489, Federal Specification W-C375 |
| Approval | UL |
| Temp Rating | 60C, 75C |
| Construction Features | Common Trip, HACR Rated |
Product FAQs
5 answersWhich load centers are compatible with the BR390 circuit breaker?
The BR390 is designed for use in Eaton and Cutler-Hammer Type BR load centers. It is also UL-listed as a direct replacement for use in compatible legacy Westinghouse, Challenger, and Bryant panels that accept Type BR breakers.
How many panel spaces does the BR390 require for installation?
This 3-pole breaker requires three standard 1-inch spaces, taking up a total width of 3 inches on the panel bus.
Is the Eaton BR390 HACR rated for HVAC equipment?
Yes, this breaker is HACR rated, making it suitable for protecting heating, air conditioning, and refrigeration equipment that requires a 90A, 3-phase circuit.
Can the Eaton BR390 replace older Bryant or Westinghouse breakers?
Yes. Because Eaton acquired the Bryant and Westinghouse load center lines, the BR390 is the exact, UL-listed replacement for legacy Bryant BR390 and Westinghouse BR390 circuit breakers.
Does the BR390 feature a common trip mechanism?
Yes, it utilizes an internal common trip. If a fault or overload is detected on any individual pole, all three poles will trip simultaneously to safely disconnect power to three-phase loads.
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All International orders require a $1,000 minimum order threshold. Due to the special nature of these shipments, we require that these be placed with a SuperBreakers representative. Additional shipping and instructions will apply. All International Orders are Non-Cancel and Non-Refundable.
Reviews
Review summary
Customers rate this product 4.9 out of 5 based on 70 reviews.
Reviews Summary
Generated by AI from 96 most recent customer reviews
Last updated 8/15/25
Customers say these circuit breakers arrive quickly and fit their needs perfectly. Many reviews mention competitive pricing and reliable availability, particularly for hard-to-find models. The products consistently meet expectations for installation and functionality. Reviews frequently note the precise fit and immediate operation of these breakers. Some users appreciate the option of both new and refurbished units.
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Rating
70 reviews
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delivered on time as described
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delivered on time as described
- MPMichael P.Verified BuyerReviewingEaton / Cutler-Hammer BR1520 - 15/20A Tandem Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars8/5/26An excellent business
In this day and age it can be a challenge at times finding a reputable business that fills your order correctly and at the right price and without delay. I am very pleased with your service. Thank you.