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Square D KCL34175 Molded Case Circuit Breaker
- 175A
- 3 Pole
- Unit Mount
Square D
KCL34175
Molded Case Circuit Breaker
Brand
Square D
SKU
KCL34175
Quantity
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Square D KCL34175 - 175A 3 Pole Molded Case Circuit Breaker
New
Quantity
Quantity
Square D KCL34175 - 175A 3 Pole Molded Case Circuit Breaker
New
Quantity
| Brand | Square D |
|---|---|
| Part Number | KCL34175 |
| Series | KCL |
| Amperage | 175A |
| 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, Padlock Attachment, Motor Operator |
|---|---|
| Accessories | Line and Load Lugs (AL250KA) |
| Standards | CSA C22.2 No. 5, NEMA AB-1, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | Extra High Interrupting Capacity, HACR Rated, Trip-Free Mechanism |
Quantity
Square D KCL34175 - 175A 3 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
| Brand | Square D |
|---|---|
| Part Number | KCL34175-R |
| Series | KCL |
| Amperage | 175A |
| 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, Padlock Attachment, Motor Operator |
|---|---|
| Accessories | Line and Load Lugs (AL250KA) |
| Standards | CSA C22.2 No. 5, NEMA AB-1, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | Extra High Interrupting Capacity, HACR Rated, Trip-Free Mechanism |
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Description
Part of the legacy K-Frame series, the Square D KCL34175 provides reliable overcurrent protection for industrial applications. This 3-pole, 175A MCCB features a thermal-magnetic trip unit with long-time and instantaneous (LI) functions. Designed for unit-mount configurations, it installs into Square D switchboards using AL250KA lugs. Rated for extra-high interrupting capacity (65kA at 480V), it safely clears severe faults. For modern upgrades, it is replaced by the PowerPacT J-Frame JJL36175.Specifications
| Brand | Square D |
|---|---|
| Part Number | KCL34175 |
| Series | KCL |
| Amperage | 175A |
| 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, Padlock Attachment, Motor Operator |
|---|---|
| Accessories | Line and Load Lugs (AL250KA) |
| Standards | CSA C22.2 No. 5, NEMA AB-1, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | Extra High Interrupting Capacity, HACR Rated, Trip-Free Mechanism |
Product FAQs
6 answersWhat is the modern replacement for the legacy Square D KCL34175 circuit breaker?
The KCL34175 is an obsolete K-Frame breaker. For modern panel upgrades or direct replacements, Schneider Electric recommends the PowerPacT J-Frame series. The JJL36175 is the direct equivalent, matching the 175A rating, 3-pole configuration, and 65kA at 480VAC interrupting capacity.
What equipment is compatible with the KCL34175 breaker?
This unit-mount molded case circuit breaker is designed for installation in Square D enclosures, switchboards, and panelboards configured to accept legacy K-Frame devices.
What wire sizes are supported by the terminals on the KCL34175?
The breaker comes equipped with lugs that accept either aluminum or copper (Al/Cu) conductors ranging from 4 AWG to 350 kcmil.
How does the trip unit function on this K-Frame breaker?
It utilizes a thermal-magnetic trip unit with LI (Long-Time, Instantaneous) functions. The thermal element provides fixed long-time overcurrent protection, while the magnetic element is adjustable to allow customization of the instantaneous short-circuit response.
How is the KCL34175 mounted within an enclosure?
This is a unit-mount breaker, also referred to as a feed-thru configuration. It is designed to be bolted directly to the backpan of a switchboard or enclosure and wired using the integral line and load lugs, rather than plugging into a busbar system.
What safety certifications apply to the KCL34175?
This molded case circuit breaker is UL Listed and CSA Certified, ensuring it complies with standard safety requirements for industrial and commercial power distribution systems.
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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!
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- 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