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Eaton / Westinghouse K3225N Molded Case Circuit Breaker
- 225A
- 3 Pole
- Unit Mount
Eaton / Westinghouse
K3225N
Molded Case Circuit Breaker
Brand
Eaton / Westinghouse
SKU
K3225N
Quantity
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Eaton / Westinghouse K3225N - 225A 3 Pole Molded Case Circuit Breaker
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225A 3 Pole Molded Case Circuit Breaker
225A 3 Pole Molded Case Circuit Breaker
Description
Maintaining older commercial power distribution networks is simplified with this 225A K-Frame molded case circuit breaker. Built for 600V maximum systems, it integrates perfectly into vintage Westinghouse motor control centers and switchboards. Utilizing standard interrupting capacity and an adjustable magnetic trip, it delivers reliable long-time and instantaneous protection. While eventually replaced by the KD3225, this original configuration ensures exact alignment with existing buswork.Specifications
| Brand | Eaton / Westinghouse |
|---|---|
| Part Number | K3225N-R |
| Series | K |
| Amperage | 225A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 240VAC, 480VAC, 600VAC, 250VDC |
| Phase | 3 |
| AIC Rating | 25kA @ 240VAC, 22kA @ 480VAC, 10kA @ 600VAC, 10kA @ 250VDC |
| Terminal Type | Lugs |
|---|---|
| For Use With | Westinghouse 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 | Shunt Trip, Auxiliary Switch, Undervoltage Release, Alarm Switch |
|---|---|
| Accessories | Lug Terminals |
| Standards | NEMA AB-1, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40°C |
| Construction Features | Non-Interchangeable Trip, Standard Interrupting Capacity, HACR Rated |
Product FAQs
4 answersWhat is the modern Eaton equivalent for the legacy Westinghouse K3225N?
The K3225N was superseded by the Eaton KD3225 KD-frame breaker. However, using the original K3225N configuration ensures exact alignment with existing buswork in vintage Westinghouse enclosures without requiring modification.
Does the K3225N require a separate lug kit for installation?
No, this breaker comes standard with mechanical line and load lugs installed, which accept 4 AWG to 350 kcmil aluminum or copper conductors.
Why is the magnetic trip adjustable on the K3225N?
The adjustable magnetic trip allows electricians to fine-tune the instantaneous short-circuit response based on the specific inrush current characteristics of the connected load, preventing nuisance tripping while maintaining equipment protection.
Can the K3225N be installed in modern Eaton panelboards?
The K3225N is a legacy K-frame breaker designed specifically for vintage Westinghouse panelboards, switchboards, and motor control centers. For modern Eaton panels, verify frame compatibility with the enclosure deadfront and bus spacing before installation.
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