Part of Eaton's comprehensive power distribution lineup, this 125-amp, 2-pole plug-on breaker delivers dependable thermal-magnetic protection. Rated for 10 kAIC at 120/240V, it is utilized as a main or sub-feed breaker in residential applications. The unit mounts into modern Eaton Type BR load centers as well as older Westinghouse and Bryant panels, requiring four total 1-inch spaces across the busbar. Equipped with standard lugs, it accommodates #2 AWG through 300 kcmil Cu/Al conductors.
Eaton Type BR Load Centers, Legacy Westinghouse/Bryant Load Centers
Wire Gauge
2 AWG - 300 kcmil (Cu/Al)
Max Wire
300 kcmil
Min Wire
2 AWG
Protection and operation
Trip Technology
Thermal Magnetic
Trip Function Code
LI
Trip Function
Long-Time, Instantaneous
Trip Adjustability
Fixed
Standards and features
Available Options
Shunt Trip, Auxiliary Switch, Bell Alarm
Accessories
Lugs Included
Standards
CSA C22.2 No. 5, Federal Specification W-C375, UL 489
Approval
CSA, UL
Temp Rating
40C
Construction Features
Common Trip, Reverse Feed
Product FAQs
4 answers
How many panel spaces does the BJ2125 require?
The BJ2125 requires four 1-inch pole spaces. It is designed to span both sides of the bus bar, occupying two spaces on the left side and two spaces on the right side of the load center.
Can I install the BJ2125 in any Eaton BR load center?
No. According to Eaton specifications, the BJ2125 requires at least a 150A rated load center to safely accommodate the breaker.
Do I need a hold-down kit when using the BJ2125 as a main breaker?
Yes. If you are installing the BJ2125 as a back-fed main breaker or service disconnect, a hold-down kit is required to secure it to the load center bus bar.
Is the Eaton BJ2125 a direct replacement for older Bryant or Westinghouse breakers?
Yes. Eaton manufactures the BJ2125 to directly replace legacy Bryant and Westinghouse BJ2125 main and branch circuit breakers.
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Shipping
Free Shipping Policy
Parcel shipments with item value over $99 qualify for free economy shipping within the continental US. Please call to confirm special handling instructions. We do not charge a handling fee or require a minimum amount on any order. SuperBreakers does not ship on customer accounts.
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International Shipping
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 8 reviews.
Eaton / Cutler-Hammer BJ3200 - 200A 3 Pole Molded Case Circuit Breaker
I recommend this product
Rated 5 out of 5 stars
9/23/26
Eaton / Cutler-Hammer BJ3200 - 200A 3 Pole Molded Case Circuit Breaker
Received my order earlier than expected, it was the correct item, and in good condition.
AE
Alan E.
Reviewing
Eaton / Cutler-Hammer BJ2200 - 200A 2 Pole Molded Case Circuit Breaker
I recommend this product
Rated 5 out of 5 stars
4/27/21
Project can continue now
The order process was easy and painless. Upgrading my home breaker box can now be possible because of the multitude of inventory this awesome website has. Much appreciated!
JA
Jon A.
Reviewing
Eaton / Cutler-Hammer BJ2200 - 200A 2 Pole Molded Case Circuit Breaker
I recommend this product
Rated 5 out of 5 stars
3/11/21
AA Action Electric Lee Inc.
Any time I get in a jam I always find what I need at Super Breakers….
HK
Hardy K.
Reviewing
Eaton / Cutler-Hammer BJ2175 - 175A 2 Pole Molded Case Circuit Breaker
I recommend this product
Rated 4 out of 5 stars
1/19/21
Great selection and prices
It is getting harder to find Breakers these days. They had what I could not find anywhere and shipped it fast.
QL
Quentin L.
Reviewing
Eaton / Cutler-Hammer BJ3150 - 150A 3 Pole Molded Case Circuit Breaker
I recommend this product
Rated 5 out of 5 stars
10/29/20
Perfect & Professional
Our order was exactly what we wanted, packaged very well, and the process was very professional. Everything came as indicated and was timely.