Eaton / Cutler-Hammer BJH3225 Molded Case Circuit Breaker
- 225A
- 3 Pole
- Plug-On
Quantity
Eaton / Cutler-Hammer BJH3225 - 225A 3 Pole Molded Case Circuit Breaker
New
Quantity
Description
Part of the BJH series, this 225A, 3-pole main breaker is designed for 3-phase Eaton Type BR load centers. The Eaton BJH3225 features a plug-on mounting style that requires six 1-inch pole spaces across the panel bus. It provides reliable thermal-magnetic protection with long-time and instantaneous (LI) trip functions. With a high interrupting capacity of 22 kAIC at 240VAC, it is ideal for commercial and industrial applications, as well as replacing older Westinghouse or Bryant mains.Specifications
| Brand | Eaton / Cutler-Hammer |
|---|---|
| Part Number | BJH3225 |
| Series | BJH |
| Amperage | 225A |
| Poles | 3 |
| Mounting Style | Plug-On |
| Voltage | 240VAC |
| Phase | 3 |
| AIC Rating | 22kA @ 240VAC |
| Terminal Type | Lugs |
|---|---|
| For Use With | Eaton Type BR Load Centers |
| Wire Gauge | 2 AWG - 300 kcmil (Al/Cu) |
| 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, Federal Specification W-C-375, NEMA AB 1, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | Common Trip, High Interrupting Capacity, Main Breaker, Reverse Feed |
Product FAQs
6 answersWhich load centers are compatible with the Eaton BJH3225?
The BJH3225 is designed exclusively for Eaton Type BR load centers. As a 3-pole main breaker, it mounts across the bus and requires a total of six 1-inch pole spaces, occupying three spaces on the left and three spaces on the right.
Do I need a hold-down kit to install the BJH3225?
Yes, when installed as a main breaker or in a back-fed branch configuration, the National Electrical Code (NEC) requires the breaker to be mechanically secured to the panel. You will need the Eaton BJHDS3P hold-down screw kit, which is specifically designed for 3-pole BJ and BJH breakers.
What is the difference between the Eaton BJ3225 and the BJH3225?
The primary difference is the short-circuit interrupting rating. The standard BJ3225 is rated for 10kAIC, whereas the BJH3225 is a high-interrupting version rated for 22kAIC at 240VAC. Both share the same physical footprint and fit Type BR panels.
What wire sizes can be used with the BJH3225 terminals?
The included lugs accept 2 AWG through 300 kcmil wire. The terminals are dual-rated for both copper (Cu) and aluminum (Al) conductors, providing flexibility for service entrance or heavy feeder applications.
How does the thermal-magnetic trip unit in the BJH3225 operate?
The breaker uses a fixed Long-Time and Instantaneous (LI) trip function. The thermal component (Long-Time) responds to gradual overloads by heating a bimetallic strip, while the magnetic component (Instantaneous) reacts immediately to high-level short circuits, ensuring comprehensive circuit protection.
Can the Eaton BJH3225 replace older Cutler-Hammer or Westinghouse breakers?
Yes, Eaton acquired the Cutler-Hammer, Westinghouse, and Bryant electrical lines. The Eaton BJH3225 is the direct, manufacturer-approved replacement for legacy Cutler-Hammer, Westinghouse, and Bryant 225A, 3-pole, 22kAIC breakers in the BR family.
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