Square D KCL34225-1021 Molded Case Circuit Breaker
- 225A
- 3 Pole
- Unit Mount
Quantity
Square D KCL34225-1021 - 225A 3 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
Quantity
Square D KCL34225-1021 - 225A 3 Pole Molded Case Circuit Breaker
New
Quantity
| Brand | Square D |
|---|---|
| Part Number | KCL34225-1021 |
| Series | KCL |
| Amperage | 225A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 240VAC, 480Y/277VAC, 480VAC |
| Phase | 3 |
| AIC Rating | 100kA @ 240VAC, 65kA @ 480Y/277VAC, 65kA @ 480VAC |
| Frame Type | KCL |
|---|---|
| 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 | Auxiliary Switch, Undervoltage Release, Alarm Switch |
|---|---|
| Accessories | Lugs (AL250KA), Shunt Trip |
| 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 KCL34225-1021 - 225A 3 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
| Brand | Square D |
|---|---|
| Part Number | KCL34225-1021 |
| Series | KCL |
| Amperage | 225A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 240VAC, 480Y/277VAC, 480VAC |
| Phase | 3 |
| AIC Rating | 100kA @ 240VAC, 65kA @ 480Y/277VAC, 65kA @ 480VAC |
| Frame Type | KCL |
|---|---|
| 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 | Auxiliary Switch, Undervoltage Release, Alarm Switch |
|---|---|
| Accessories | Lugs (AL250KA), Shunt Trip |
| 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 |
Description
A drop-in replacement for legacy industrial systems, the Square D KCL34225-1021 is a 225A MCCB featuring a factory-installed 120-240VAC shunt trip. This accessory allows facility managers to remotely open the breaker for emergency shutdowns. The K-Frame unit delivers an extra-high interrupting capacity of 65kA at 480VAC. Utilizing a thermal-magnetic trip mechanism, it ensures precise LI protection. It installs into compatible Square D enclosures via standard lug connections.Specifications
| Brand | Square D |
|---|---|
| Part Number | KCL34225-1021 |
| Series | KCL |
| Amperage | 225A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 240VAC, 480Y/277VAC, 480VAC |
| Phase | 3 |
| AIC Rating | 100kA @ 240VAC, 65kA @ 480Y/277VAC, 65kA @ 480VAC |
| Frame Type | KCL |
|---|---|
| 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 | Auxiliary Switch, Undervoltage Release, Alarm Switch |
|---|---|
| Accessories | Lugs (AL250KA), Shunt Trip |
| 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
5 answersWhat does the "-1021" suffix mean on the KCL34225-1021?
The "-1021" suffix indicates that this breaker includes a factory-installed 120-240VAC shunt trip. This allows the breaker to be tripped remotely, which is often required for emergency stops or advanced control systems.
What equipment is compatible with the KCL34225-1021 breaker?
This unit-mount K-frame breaker is designed for installation in compatible Square D enclosures, switchboards, and panelboards. It uses feed-thru line and load lugs rather than plug-on or I-Line connections.
How are conductors terminated on the KCL34225-1021?
This feed-thru breaker is equipped with factory-installed line and load side lugs that accept 4 AWG to 350 kcmil aluminum or copper conductors. Always apply the specific torque values printed on the breaker faceplate during installation to ensure a secure connection.
How does the trip unit function on the KCL34225-1021?
This breaker utilizes a thermal-magnetic trip unit providing Long-Time (L) and Instantaneous (I) protection. It features a fixed thermal element for overload protection and an adjustable magnetic element, allowing electricians to coordinate short-circuit tripping with downstream devices.
What is the modern replacement for the legacy KCL34225-1021?
The legacy K-frame series has been superseded by the Square D PowerPact J-Frame series. The modern base equivalent is the JJL36225, though a compatible 120-240VAC shunt trip accessory must be added to replicate the "-1021" functionality.
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Reviews
Review summary
Customers rate this product 4.8 out of 5 based on 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