Square D KC34225-1021 Molded Case Circuit Breaker
- 225A
- 3 Pole
- I-Line
Quantity
Square D KC34225-1021 - 225A 3 Pole Molded Case Circuit Breaker
New
Quantity
Description
Engineered for advanced control, the Square D KC34225-1021 is a 225A commercial circuit breaker featuring a built-in 120-240VAC shunt trip for remote disconnect capabilities. It utilizes thermal-magnetic technology to provide long-time and instantaneous (LI) protection. Designed for seamless integration, it mounts into Square D I-Line panelboards and switchboards. The base breaker is replaced by the JJA36225. It delivers a robust 65 kAIC rating at 480VAC for demanding environments.Specifications
| Brand | Square D |
|---|---|
| Part Number | KC34225-1021 |
| Series | KC |
| Amperage | 225A |
| 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 |
| Frame Type | KC |
|---|---|
| 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 | Auxiliary Switch, Undervoltage Release, Alarm Switch, Padlock Attachment |
|---|---|
| Accessories | Lugs (AL250KA), Shunt Trip (120-240VAC) |
| 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, Non-Interchangeable Trip, Trip-Free Mechanism, Quick-Make/Quick-Break |
Product FAQs
4 answersWhat does the -1021 suffix indicate on the KC34225-1021 circuit breaker?
The -1021 suffix designates that this breaker includes a factory-installed 120-240VAC shunt trip. This accessory allows for remote tripping of the circuit breaker from an external control signal.
What is the modern replacement for the legacy KC34225-1021?
The legacy Square D K-frame series has been superseded by the PowerPact J-frame series. The base replacement is the JJA36225, but you must specify a 120-240VAC shunt trip accessory to match the functionality of the -1021 suffix.
Can I install this K-frame breaker in a standard QO or NF load center?
No, the KC34225-1021 is an I-Line molded case circuit breaker designed specifically for I-Line distribution panelboards and switchboards. It utilizes a plug-on line connection and will not fit in standard QO, NQ, or NF load centers.
How does the I-Line connection work on the KC34225-1021?
This breaker features a plug-on design for the line side that snaps directly onto the bus assembly of an I-Line panelboard. The load side utilizes standard mechanical lugs for wire termination.
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Reviews
Review summary
Customers rate this product 5.0 out of 5 based on 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!!