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Eaton / Cutler-Hammer K3150 Molded Case Circuit Breaker
- 150A
- 3 Pole
- Bolt-On
Eaton / Cutler-Hammer
K3150
Molded Case Circuit Breaker
Brand
Eaton / Cutler-Hammer
SKU
K3150
Quantity
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Eaton / Cutler-Hammer K3150 - 150A 3 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
Sold out
Quantity
Eaton / Cutler-Hammer K3150 - 150A 3 Pole Molded Case Circuit Breaker
New
Quantity
| Brand | Eaton / Cutler-Hammer |
|---|---|
| Part Number | K3150 |
| Series | K |
| Amperage | 150A |
| 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 | Eaton Series C Panelboards, Westinghouse Panelboards, Motor Control Centers, Switchboards |
| Wire Gauge | 3 AWG - 350 kcmil (Al/Cu) |
| Max Wire | 350 kcmil |
| Min Wire | 3 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 | Line and Load Lugs Included |
| Standards | CSA C22.2 No. 5.1, IEC 60947-2, NEMA AB 1, UL 489 |
| Approval | CSA, HACR, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated |
Quantity
Eaton / Cutler-Hammer K3150 - 150A 3 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
| Brand | Eaton / Cutler-Hammer |
|---|---|
| Part Number | K3150-R |
| Series | K |
| Amperage | 150A |
| 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 | Eaton Series C Panelboards, Westinghouse Panelboards, Motor Control Centers, Switchboards |
| Wire Gauge | 3 AWG - 350 kcmil (Al/Cu) |
| Max Wire | 350 kcmil |
| Min Wire | 3 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 | Line and Load Lugs Included |
| Standards | CSA C22.2 No. 5.1, IEC 60947-2, NEMA AB 1, UL 489 |
| Approval | CSA, HACR, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated |
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Description
Built to fit Westinghouse and Eaton Series C panelboards, the K3150 is a 150A, 3-pole molded case circuit breaker. It delivers reliable thermal-magnetic protection with a 25kAIC interrupt rating at 240VAC. This bolt-on K-Frame breaker is ideal for commercial switchboards and motor control centers, and can be substituted with the KD3150. It features an interchangeable trip unit, reverse feed capabilities, and is HACR rated for heating and cooling applications.Specifications
| Brand | Eaton / Cutler-Hammer |
|---|---|
| Part Number | K3150-R |
| Series | K |
| Amperage | 150A |
| 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 | Eaton Series C Panelboards, Westinghouse Panelboards, Motor Control Centers, Switchboards |
| Wire Gauge | 3 AWG - 350 kcmil (Al/Cu) |
| Max Wire | 350 kcmil |
| Min Wire | 3 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 | Line and Load Lugs Included |
| Standards | CSA C22.2 No. 5.1, IEC 60947-2, NEMA AB 1, UL 489 |
| Approval | CSA, HACR, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated |
Product FAQs
4 answersCan the Eaton K3150 replace an older Westinghouse K3150 breaker?
Yes. Eaton acquired the Westinghouse distribution equipment business. The Eaton Series C K3150 is a direct replacement for the legacy Westinghouse K3150, sharing the exact same physical dimensions and mounting configuration.
What is the difference between the K3150 and the KD3150 circuit breakers?
The primary difference is the short-circuit interrupting capacity. The K3150 is the standard-rated version with 25kAIC at 240VAC, while the KD3150 is the high-interrupting version rated at 65kAIC at 240VAC. Both share the same K-Frame footprint and mount identically.
What does the adjustable magnetic trip function on the K3150 do?
The adjustable magnetic trip allows you to tune the instantaneous short-circuit response threshold. This flexibility helps coordinate the breaker with downstream devices or handle specific motor inrush currents without nuisance tripping, while the thermal overload protection remains fixed.
Does the K3150 require a specific mounting hardware kit for panelboard installation?
The K3150 is a bolt-on breaker that mounts directly to the busbar in Eaton Series C and legacy Westinghouse panelboards. It does not require a separate mounting block, but you must ensure the panelboard is configured to accept K-Frame breakers.
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