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Square D KC34175 Molded Case Circuit Breaker
- 175A
- 3 Pole
- I-Line
Square D
KC34175
Molded Case Circuit Breaker
Brand
Square D
SKU
KC34175
Quantity
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Square D KC34175 - 175A 3 Pole Molded Case Circuit Breaker
New
Quantity
Quantity
Square D KC34175 - 175A 3 Pole Molded Case Circuit Breaker
New
Quantity
| Brand | Square D |
|---|---|
| Part Number | KC34175 |
| Series | KC |
| Amperage | 175A |
| Poles | 3 |
| Mounting Style | I-Line |
| Voltage | 240VAC, 480Y/277VAC, 480VAC, 250VDC |
| Phase | 3 |
| AIC Rating | 100kA @ 240VAC, 65kA @ 480Y/277VAC, 65kA @ 480VAC, 10kA @ 250VDC |
| Terminal Type | Lugs |
|---|---|
| For Use With | Square D I-Line Panelboards and Switchboards |
| Wire Gauge | 4 AWG - 350 kcmil |
| 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 | Lugs (AL250KA) |
| Standards | CSA C22.2 No. 5, NEMA AB 1, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Current Limiting, Extra High Interrupting Capacity |
Quantity
Square D KC34175 - 175A 3 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
| Brand | Square D |
|---|---|
| Part Number | KC34175-R |
| Series | KC |
| Amperage | 175A |
| Poles | 3 |
| Mounting Style | I-Line |
| Voltage | 240VAC, 480Y/277VAC, 480VAC, 250VDC |
| Phase | 3 |
| AIC Rating | 100kA @ 240VAC, 65kA @ 480Y/277VAC, 65kA @ 480VAC, 10kA @ 250VDC |
| Terminal Type | Lugs |
|---|---|
| For Use With | Square D I-Line Panelboards and Switchboards |
| Wire Gauge | 4 AWG - 350 kcmil |
| 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 | Lugs (AL250KA) |
| Standards | CSA C22.2 No. 5, NEMA AB 1, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Current Limiting, Extra High Interrupting Capacity |
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Description
Engineered for robust power distribution, the KC34175 is a 175A molded case circuit breaker. It provides long-time and instantaneous (LI) thermal-magnetic protection for industrial facilities. This K-Frame breaker mounts into Square D I-Line panelboards and switchboards. For modern upgrades, it is superseded by the JJA36175 model. With an extra-high interrupting capacity of 65kA at 480VAC, it safely clears severe faults. It is HACR rated and accepts 4 AWG to 350 kcmil wire.Specifications
| Brand | Square D |
|---|---|
| Part Number | KC34175 |
| Series | KC |
| Amperage | 175A |
| Poles | 3 |
| Mounting Style | I-Line |
| Voltage | 240VAC, 480Y/277VAC, 480VAC, 250VDC |
| Phase | 3 |
| AIC Rating | 100kA @ 240VAC, 65kA @ 480Y/277VAC, 65kA @ 480VAC, 10kA @ 250VDC |
| Terminal Type | Lugs |
|---|---|
| For Use With | Square D I-Line Panelboards and Switchboards |
| Wire Gauge | 4 AWG - 350 kcmil |
| 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 | Lugs (AL250KA) |
| Standards | CSA C22.2 No. 5, NEMA AB 1, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Current Limiting, Extra High Interrupting Capacity |
Product FAQs
6 answersHow does the KC34175 mount into the enclosure?
This breaker features Square D I-Line mounting. It uses a specialized plug-on stab connection that engages directly with the busbar stack in an I-Line panelboard or switchboard, eliminating the need for line-side cabled connections to the bus.
What panels are compatible with the KC34175?
This breaker is strictly designed for use in Square D I-Line panelboards and switchboards. It will not fit in standard NQ, NF, QO, or Homeline distribution panels.
What does the adjustable magnetic trip function allow the installer to do?
While the thermal continuous current rating is fixed at 175A, the adjustable magnetic dial allows electricians to set the instantaneous short-circuit trip threshold. This provides flexibility for selective coordination with upstream and downstream protective devices in the electrical system.
What does the 'C' in the KC34175 part number signify?
In the legacy Square D K-frame lineup, the middle letter designates the interrupting rating. The 'C' indicates an extra-high interrupting capacity, providing up to 100kA at 240VAC and 65kA at 480VAC.
Is the KC34175 part of a current product line?
No, the KC series is categorized as a legacy molded case circuit breaker. Schneider Electric has largely transitioned this footprint to the modern PowerPact series, but utilizing the KC34175 is often necessary for direct, no-modification replacements in existing I-Line setups.
What size conductors can be terminated on the load side of this breaker?
The standard mechanical lugs on this 175A K-frame breaker accommodate wire sizes ranging from 4 AWG to 350 kcmil. Always verify the conductor material and apply the manufacturer-specified torque during installation.
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Reviews
Review summary
Customers rate this product 5.0 out of 5 based on 1 review.
Total 5 star reviews: 1 Total 4 star reviews: 0 Total 3 star reviews: 0 Total 2 star reviews: 0 Total 1 star reviews: 0
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Rating
1 review
- TDTammy D.Verified BuyerReviewingSquare D KC34200 - 200A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars7/9/26Breakers
great service!! I had bought 3 different breakers & there was one that i had to return. I called as soon as i realized it was wrong.( my fault) I had my return RMA in about 5 minutes of the phone call. Highly recommend!!