Eaton / Cutler-Hammer KA3225 Molded Case Circuit Breaker
- 225A
- 3 Pole
- Bolt-On
Quantity
Eaton / Cutler-Hammer KA3225 - 225A 3 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
Description
Part of the legacy K-Frame family, this 225-amp molded case circuit breaker delivers robust overcurrent protection for commercial facilities. The unit utilizes an interchangeable thermal-magnetic trip system with adjustable magnetic settings. It mounts into Westinghouse and Cutler-Hammer Pow-R-Line C panelboards, CDP enclosures, and motor control centers. For modern upgrades, this model is replaced by the KD3225 using a TAD3 spacer. Rated for 25kAIC at 240VAC, it handles demanding loads.Specifications
| Brand | Eaton / Cutler-Hammer |
|---|---|
| Part Number | KA3225-R |
| Series | KA |
| Amperage | 225A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 600VAC, 250VDC |
| Phase | 3 |
| AIC Rating | 25kA @ 240VAC, 22kA @ 480VAC, 22kA @ 600VAC, 10kA @ 250VDC |
| Terminal Type | Lugs |
|---|---|
| For Use With | Westinghouse / Cutler-Hammer Pow-R-Line C Panelboards, CDP Panelboards, Switchboards, Motor Control Centers |
| Wire Gauge | 4 AWG - 350 kcmil (Al/Cu) |
| Max Wire | 350 kcmil |
| Min Wire | 4 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed Thermal, Adjustable Magnetic |
| Available Options | Auxiliary Switch, Shunt Trip, Undervoltage Release, Alarm Switch |
|---|---|
| Accessories | Load Side Lugs Included |
| Standards | NEMA AB-1, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Interchangeable Trip Unit |
Product FAQs
5 answersWhat panelboards and enclosures are compatible with the KA3225 breaker?
This breaker is designed to mount into Westinghouse and Cutler-Hammer Pow-R-Line C panelboards, CDP enclosures, switchboards, and motor control centers.
What is the modern replacement for the obsolete KA3225 circuit breaker?
The Eaton Series C KD3225 serves as the direct modern replacement. While the overall dimensions of the KA and KD frames are the same, the KD breaker requires a TAD3 spacer on the line side to make up the difference in the height of the breaker tang.
What wire sizes are accepted by the standard lugs on this breaker?
The included lugs accept aluminum or copper wire ranging from 4 AWG to 350 kcmil.
How does the trip unit function on the KA3225?
This breaker utilizes a thermal magnetic trip unit with a fixed thermal element for overload protection and an adjustable magnetic element for short circuit protection.
How is the KA3225 secured inside the panelboard?
This is a bolt-on molded case circuit breaker that requires appropriate mounting hardware to secure it to the busbars in a CDP or Pow-R-Line C chassis.
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Reviews
Review summary
Customers rate this product 4.9 out of 5 based on 14 reviews.
- RFRon F.Verified BuyerReviewingSquare D KA36150 - 150A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars7/27/26Square D KA36150
As usual, on time and in great condition!
- SJShawn J.Verified BuyerReviewingSquare D KA36225 - 225A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars4/27/26I Line BreKER
Found exactly what I was looking for. They called and set over specs so I could confirm the fit!
- RFRon F.Verified BuyerReviewingSquare D KA36100 - 100A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars4/9/26Multiple orders
I have purchased multiple breakers (of fairly large size) from SuperBreakers and their pricing has been excellent and the delivery time spot on. I would highly recommend them
- MFMatt F.Verified BuyerReviewingSquare D KA36100 - 100A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars8/21/25Order Messed Up - Breaker Great
I have ordered many breakers through SuperBreakers with no issues until this order. I ordered this breaker and it wasn't shipped. I sent a message and was told that a mistake was make in shipping and that they would next day air the breaker to me. 5 days later (weekend in there) the breaker arrived. Not next day air, but shit happens. Sent the breaker still in the box out with my electrician and received a call from him that the breaker that was sent was a KAL36100 not the KA36100. I reached out to SuperBreakers and was told the correct breaker would be next day aired that day and I was emailed a shipping label to send back the incorrect one. This time it arrived the next day and was installed. This error cost my customer a couple days with out power to a dimmer cabinet and about 2 extra hours of labor, but all was okay in the end. Mistakes happen. The help and quick responses to my emails I received from Mike David showed me enough about this company. I look forward to my next order. Thank you for working this situation out in timely manor.
- JHJoel H.Verified BuyerReviewingSquare D KA36200 - 200A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars8/5/25Worked As Planned
They had what we needed to match existing equipment, they shipped the same day and we put it right into service, no problems from first phone call to delivery and install.