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Eaton / Westinghouse MA3225 Molded Case Circuit Breaker
- 225A
- 3 Pole
- Bolt-On
Eaton / Westinghouse
MA3225
Molded Case Circuit Breaker
Brand
Eaton / Westinghouse
SKU
MA3225
Quantity
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Eaton / Westinghouse MA3225 - 225A 3 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
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Description
Part of the legacy MA series, the Eaton MA3225 is a 225-amp, 3-pole molded case circuit breaker. It delivers robust protection for commercial power networks. This unit installs into vintage Westinghouse PRL4 panelboards and switchboards. Using this direct replacement avoids the adapter kits required when upgrading to the JDB3225. With a 30 kAIC rating at 480VAC, it features an interchangeable trip unit and accommodates up to 500 kcmil conductors.Specifications
| Brand | Eaton / Westinghouse |
|---|---|
| Part Number | MA3225-R |
| Series | MA |
| Amperage | 225A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 600VAC, 250VDC |
| Phase | 3 |
| AIC Rating | 42kA @ 240VAC, 30kA @ 480VAC, 22kA @ 600VAC, 10kA @ 250VDC |
| Terminal Type | Lugs |
|---|---|
| For Use With | Westinghouse PRL4 Panelboards, Switchboards, Motor Control Centers |
| Wire Gauge | (1) 3/0 AWG - 500 kcmil (Al/Cu) |
| Max Wire | 500 kcmil |
| Min Wire | 3/0 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 | Lugs |
| Standards | CSA C22.2 No. 5, NEMA AB-1, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | Interchangeable Trip Unit |
Product FAQs
5 answersWhat panelboards are compatible with the MA3225 circuit breaker?
This M-frame breaker is specifically designed for use in Westinghouse PRL4 panelboards. It is also suitable for installation in compatible legacy switchboards and motor control centers.
What are the wire size requirements for the MA3225 lugs?
The factory-installed load side lugs accept one aluminum or copper conductor per phase, ranging from 3/0 AWG to 500 kcmil. Ensure proper torque specifications are followed during installation.
How does the adjustable magnetic trip function operate on this breaker?
The MA3225 utilizes a thermal-magnetic trip unit with a fixed thermal element for long-time overload protection. The magnetic element is adjustable, allowing electricians to fine-tune the instantaneous short-circuit trip threshold to coordinate with downstream devices.
Does the MA3225 use a plug-on or bolt-on mounting configuration?
This is a bolt-on circuit breaker. It must be mechanically bolted directly to the busbars in the panelboard or switchboard, providing a secure connection for high-amperage industrial applications.
Is the MA3225 rated for direct current (DC) systems?
Yes, in addition to standard AC ratings up to 600VAC, this breaker is rated for DC applications up to 250VDC.
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Reviews
Review summary
Customers rate this product 5.0 out of 5 based on 1 review.
Total 5 star reviews: 1 Total 4 star reviews: 0 Total 3 star reviews: 0 Total 2 star reviews: 0 Total 1 star reviews: 0
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Rating
1 review
- DHDave H.ReviewingSquare D MA36600 - 600A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars6/6/25Never had a problem
We like the service and the prices. The re-certified are great for projects that we have in house.