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Square D KCL34150 Molded Case Circuit Breaker
- 150A
- 3 Pole
- Unit Mount
Square D
KCL34150
Molded Case Circuit Breaker
Brand
Square D
SKU
KCL34150
Quantity
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Square D KCL34150 - 150A 3 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
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Square D KCL34150 - 150A 3 Pole Molded Case Circuit Breaker
New
Quantity
| Brand | Square D |
|---|---|
| Part Number | KCL34150 |
| Series | KCL |
| Amperage | 150A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 240VAC, 480Y/277VAC, 480VAC |
| Phase | 3 |
| AIC Rating | 100kA @ 240VAC, 65kA @ 480Y/277VAC, 65kA @ 480VAC |
| Terminal Type | Lugs |
|---|---|
| For Use With | Square D Enclosures, Switchboards, Panelboards |
| 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 | Lugs (AL250KA) |
| Standards | CSA C22.2 No. 5, NEMA AB-1, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Extra High Interrupting Capacity, Trip-Free Mechanism, Quick-Make/Quick-Break |
Quantity
Square D KCL34150 - 150A 3 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
| Brand | Square D |
|---|---|
| Part Number | KCL34150-R |
| Series | KCL |
| Amperage | 150A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 240VAC, 480Y/277VAC, 480VAC |
| Phase | 3 |
| AIC Rating | 100kA @ 240VAC, 65kA @ 480Y/277VAC, 65kA @ 480VAC |
| Terminal Type | Lugs |
|---|---|
| For Use With | Square D Enclosures, Switchboards, Panelboards |
| 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 | Lugs (AL250KA) |
| Standards | CSA C22.2 No. 5, NEMA AB-1, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Extra High Interrupting Capacity, Trip-Free Mechanism, Quick-Make/Quick-Break |
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150A 3 Pole Molded Case Circuit Breaker
150A 3 Pole Molded Case Circuit Breaker
Description
Providing robust overcurrent protection for industrial facilities, the Square D KCL34150 is a 150A, 3-pole molded case circuit breaker. It utilizes a thermal-magnetic trip unit with fixed thermal and adjustable magnetic settings to deliver precise long-time and instantaneous (LI) defense. This unit-mount K-Frame breaker integrates seamlessly into compatible Square D panelboards and switchboards. Rated for 65 kAIC at 480VAC, this legacy model is succeeded by the PowerPacT J-Frame series.Specifications
| Brand | Square D |
|---|---|
| Part Number | KCL34150-R |
| Series | KCL |
| Amperage | 150A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 240VAC, 480Y/277VAC, 480VAC |
| Phase | 3 |
| AIC Rating | 100kA @ 240VAC, 65kA @ 480Y/277VAC, 65kA @ 480VAC |
| Terminal Type | Lugs |
|---|---|
| For Use With | Square D Enclosures, Switchboards, Panelboards |
| 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 | Lugs (AL250KA) |
| Standards | CSA C22.2 No. 5, NEMA AB-1, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Extra High Interrupting Capacity, Trip-Free Mechanism, Quick-Make/Quick-Break |
Product FAQs
4 answersHow is the KCL34150 installed in a panelboard or switchboard?
This is a unit-mount circuit breaker. It bolts directly to the mounting pan or chassis of compatible Square D enclosures, switchboards, and panelboards, rather than plugging directly into a busbar system.
What adjustability does the trip unit on this K-frame breaker offer?
The breaker utilizes a thermal-magnetic trip unit with a fixed thermal element for long-time overload protection and an adjustable magnetic element. This allows installers to modify the instantaneous short-circuit trip threshold to suit specific load requirements.
What are the conductor requirements for the standard lugs on this breaker?
The factory-installed lugs are rated for both aluminum and copper wire. They accept conductor sizes ranging from 4 AWG to 350 kcmil. Always apply the manufacturer-specified torque when terminating connections.
Is the KCL series still the standard for new Square D installations?
No, the KCL34150 is part of the legacy K-frame molded case circuit breaker family. Modern Square D installations typically utilize the PowerPact series, but this legacy breaker remains essential for direct replacements in existing infrastructure without requiring extensive retrofits.
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Reviews
Review summary
Customers rate this product 4.8 out of 5 based on 5 reviews.
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Rating
5 reviews
- BWBrian W.Verified BuyerReviewingSquare D KCL34125 - 125A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars8/27/26Great!
Quick delivery
- BWBrian W.Verified BuyerReviewingSquare D KCL34200 - 200A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars8/27/26Great
Quick delivery
- BWBrian W.Verified BuyerReviewingSquare D KCL34225 - 225A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars8/27/26Works perfect
Quick delivery as well
- BWBrian W.Verified BuyerReviewingSquare D KCL34250 - 250A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars8/24/26Great Service!
Great condition, quick shipping
- JFJ F.Verified BuyerReviewingSquare D KCL34150 - 150A 3 Pole Molded Case Circuit BreakerI recommend this productRated 4 out of 5 stars5/8/26Breakers are right
I thought I was getting a tshirt too. But, alas, no