Square D KCL32110 Molded Case Circuit Breaker
- 110A
- 3 Pole
- Unit Mount
Square D
KCL32110
Molded Case Circuit Breaker
Brand
Square D
SKU
KCL32110
Quantity
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Square D KCL32110 - 110A 3 Pole Molded Case Circuit Breaker
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Description
Built for commercial power distribution, the Square D KCL32110 is a 3-pole, 110A MCCB engineered for legacy K-Frame applications. It provides reliable thermal-magnetic protection. This unit-mount breaker installs into older Square D enclosures and switchboards. It is commonly replaced by the modern PowerPacT H-Frame series (e.g., HJL36110) for system upgrades. Rated for an extra-high interrupting capacity of 100kA at 240VAC, it ensures robust fault clearing.Specifications
| Brand | Square D |
|---|---|
| Series | KCL |
| Amperage | 110A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 240VAC |
| Phase | 3 |
| AIC Rating | 100kA @ 240VAC |
| 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
7 answersCan the KCL32110 be installed in a Square D I-Line panelboard?
No. The KCL32110 is a unit-mount circuit breaker designed to be bolted to a backpan or mounting surface. It lacks the plug-on jaw connections required for I-Line distribution panels.
What are the wire size and material requirements for the KCL32110 terminals?
The breaker includes factory-installed line and load lugs that are dual-rated for aluminum and copper conductors. The acceptable wire range is 4 AWG to 350 kcmil.
How does the adjustable magnetic trip function work on the KCL32110?
While the thermal overload protection (Long-Time) is fixed, the magnetic short-circuit protection (Instantaneous) is adjustable. This allows electricians to fine-tune the instantaneous trip point to coordinate with other protective devices in the system and prevent nuisance tripping.
Is the KCL32110 a current production model?
No, the Square D K-Frame is a legacy molded case circuit breaker family. It has been superseded by the PowerPact series, but exact K-Frame replacements are still used to maintain existing switchboards and panelboards without retrofitting.
Does the KCL32110 include integrated ground-fault protection?
No. The KCL32110 is equipped with a standard LI (Long-Time, Instantaneous) thermal-magnetic trip unit. It provides overload and short-circuit protection but does not have built-in ground-fault sensing.
Is the KCL32110 compatible with residential QO load centers?
No. This is a commercial and industrial K-Frame molded case circuit breaker. It is physically larger and uses a unit-mount design, making it incompatible with residential QO or Homeline load centers.
What does the 100kA interrupting capacity (AIC) on the KCL32110 signify?
This rating indicates the maximum fault current the breaker can safely clear at 240VAC. A 100kA rating is exceptionally high, making this breaker suitable for commercial or industrial systems located close to large transformers where available fault current is significant.
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Reviews
Review summary
Customers rate this product 4.8 out of 5 based on 5 reviews.
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5 reviews
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