Eaton / Westinghouse LA3250PR Molded Case Circuit Breaker
- 250A
- 3 Pole
- Bolt-On
Quantity
Eaton / Westinghouse LA3250PR - 250A 3 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
Description
Designed for exact fitment in older systems, the Eaton LA3250PR is a 250A, 3-pole molded case circuit breaker. Its Tri-Pac fused architecture delivers advanced current-limiting capabilities to minimize let-through energy during short circuits. The bolt-on breaker installs into Westinghouse and Cutler-Hammer panelboards. It functions as a direct hardware replacement, allowing facilities to maintain their existing enclosures. Rated at 200 kAIC at 480VAC, it utilizes thermal-magnetic protection.Specifications
| Brand | Eaton / Westinghouse |
|---|---|
| Part Number | LA3250PR-R |
| Series | LA |
| Amperage | 250A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 600VAC, 250VDC |
| Phase | 3 |
| AIC Rating | 200kA @ 240VAC, 200kA @ 480VAC, 200kA @ 600VAC, 100kA @ 250VDC |
| Terminal Type | Lugs |
|---|---|
| For Use With | Westinghouse / Eaton Panelboards and Switchboards |
| Wire Gauge | (1) 1 AWG-600 kcmil (Al/Cu) or (2) 1 AWG-250 kcmil (Al/Cu) |
| Max Wire | 600 kcmil |
| Min Wire | 1 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed Thermal, Adjustable Magnetic |
| Available Options | Shunt Trip, Auxiliary Switch, Undervoltage Release, Alarm Switch |
|---|---|
| Accessories | Load Side Lugs Included |
| Standards | NEMA AB-1, UL 489 |
| Approval | UL |
| Temp Rating | 40C |
| Construction Features | Current Limiting, Interchangeable Trip Unit |
| Special Features | Current Limiting (Integrally Fused) |
Product FAQs
5 answersIs the Eaton LA3250PR the exact same breaker as the Westinghouse LA3250PR?
Yes. Eaton acquired the Westinghouse electrical distribution business. Depending on the manufacturing date, this L-frame breaker may carry the Eaton, Cutler-Hammer, or Westinghouse brand name, but the physical dimensions and performance are identical.
What does the PR in the LA3250PR catalog number indicate?
The PR suffix indicates that this is a Tri-Pac integrally fused circuit breaker. This specialized design combines a standard thermal-magnetic trip unit with internal current limiters to achieve extremely high interrupting ratings.
What equipment is compatible with the LA3250PR circuit breaker?
This bolt-on breaker is designed to mount in legacy Westinghouse, Cutler-Hammer, and Eaton panelboards or switchboards that are specifically configured for LA-frame or Tri-Pac molded case circuit breakers.
Can I run parallel conductors to the load lugs on the LA3250PR?
Yes. The standard terminal lugs are designed to accept either a single conductor ranging from 1 AWG to 600 kcmil or dual parallel conductors ranging from 1 AWG to 250 kcmil. Both aluminum and copper wire are supported.
How does the integrally fused design protect downstream equipment?
The internal Tri-Pac fuses act as current limiters. During a massive short circuit, they clear the fault much faster than the mechanical contacts alone, drastically reducing the let-through energy and preventing thermal or magnetic damage to downstream circuits.
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Reviews
Review summary
Customers rate this product 5.0 out of 5 based on 13 reviews.
- RGRobert G.Verified BuyerReviewingSquare D LA36400 - 400A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars7/16/26LA36400
Perfectly boxed and arrived on time. Thanks for the shirt and stickers as well.
- CECraig E.Verified BuyerReviewingEaton / Cutler-Hammer LA3600 - 600A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars10/13/25Westinghouse breaker
Excellent customer service and quick shipping
- CLClifton L.Verified BuyerReviewingSquare D LA36400 - 400A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars9/30/25estimator
Good
- BCBenjamin C.Verified BuyerReviewingEaton / Cutler-Hammer LA3225 - 225A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars8/4/25Refurbished Breaker
Breaker seems to be working great, no complaints from Client
- JMJerry M.ReviewingEaton / Cutler-Hammer LA3400 - 400A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars3/14/23Where is my breaker?
Where is my breaker?