Eaton / Cutler-Hammer BJH2125 Molded Case Circuit Breaker
- 125A
- 2 Pole
- Plug-On
Quantity
Eaton / Cutler-Hammer BJH2125 - 125A 2 Pole Molded Case Circuit Breaker
New
Quantity
Description
Designed for residential and commercial applications, the Eaton BJH2125 operates as a 125-amp main or branch circuit breaker. The thermal-magnetic design provides reliable long-time and instantaneous trip functions. This two-pole breaker requires four pole spaces and installs into compatible Eaton Type BR load centers. It supports reverse feed configurations for versatile panel arrangements. With an upgraded 22kAIC rating at 120/240VAC, it offers superior fault current handling capabilities.Specifications
| Brand | Eaton / Cutler-Hammer |
|---|---|
| Part Number | BJH2125 |
| Series | BJH |
| Amperage | 125A |
| Poles | 2 |
| Mounting Style | Plug-On |
| Voltage | 120/240VAC |
| Phase | 1 |
| AIC Rating | 22kA @ 120/240VAC |
| Terminal Type | Lugs |
|---|---|
| For Use With | Eaton Type BR Load Centers |
| Wire Gauge | 2 AWG - 300 kcmil (Cu/Al) |
| Max Wire | 300 kcmil |
| Min Wire | 2 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed |
| Accessories | Lugs Included |
|---|---|
| Standards | CSA C22.2 No. 5, Federal Specification W-C375, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 60C to 75C |
| Construction Features | Common Trip, High Interrupting Capacity, Main Breaker, Reverse Feed |
Product FAQs
5 answersHow many panel spaces does the BJH2125 require?
This 2-pole breaker requires four 1-inch spaces in an Eaton Type BR load center. It mounts across the busbar, occupying two spaces on the left side and two spaces on the right side.
Can the Eaton BJH2125 be used as a main breaker?
Yes, it is frequently installed as a 125A main breaker in compatible Eaton BR load centers and residential meter stacks. It can also be used as a sub-feed breaker to supply power to a downstream subpanel.
What is the difference between the Eaton BJ2125 and BJH2125 circuit breakers?
The primary difference is their short-circuit interrupting capacity. The standard BJ2125 is rated for 10 kAIC, whereas the BJH2125 features an upgraded 22 kAIC rating for systems with higher available fault current.
Will the BJH2125 fit in older Westinghouse or Bryant panels?
Yes, Eaton manufactures the BR and BJH series as direct, UL-listed replacements for legacy Cutler-Hammer, Westinghouse, and Bryant load centers that originally accepted Type BR plug-on breakers.
Can the BJH2125 be reverse fed when used as a main breaker?
Yes, this breaker supports reverse feed configurations. When installing it as a backfed plug-on main breaker in a load center, you must use a manufacturer-approved breaker hold-down kit to comply with National Electrical Code (NEC) requirements.
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