Square D KC341101021 Molded Case Circuit Breaker
- 110A
- 3 Pole
- I-Line
Quantity
Square D KC341101021 - 110A 3 Pole Molded Case Circuit Breaker
New
Quantity
Description
Providing advanced control for commercial systems, the Square D KC341101021 is a 3-pole, 110A molded case circuit breaker. It includes a factory-installed 120-240VAC shunt trip for remote shutdown capabilities. This K-Frame breaker utilizes an I-Line plug-on connection for seamless integration into Square D panelboards and switchboards. While the base model is replaced by the JJA36110, this specific configuration includes specialized auxiliary components.Specifications
| Brand | Square D |
|---|---|
| Part Number | KC341101021 |
| Series | KC |
| Amperage | 110A |
| Poles | 3 |
| Mounting Style | I-Line |
| Voltage | 240VAC, 480VAC, 250VDC |
| Phase | 3 |
| AIC Rating | 100kA @ 240VAC, 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 | Auxiliary Switch, Alarm Switch, Undervoltage Release |
|---|---|
| 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 |
Product FAQs
7 answersWhat does the 1021 suffix in the KC341101021 catalog number indicate?
The 1021 suffix indicates that this circuit breaker includes a factory-installed 120-240VAC shunt trip, which allows for remote tripping of the breaker.
How is the shunt trip activated on the KC341101021?
The factory-installed shunt trip requires a 120-240VAC control voltage signal. When this external control voltage is applied to the shunt trip leads, it mechanically forces the breaker to trip and open the circuit.
What type of panels is the KC341101021 compatible with?
This breaker features an I-Line plug-on mounting style, making it compatible with Square D I-Line panelboards and switchboards.
How does the adjustable magnetic trip function on this breaker work?
The KC341101021 features a thermal-magnetic trip unit with fixed thermal protection for overloads and an adjustable magnetic setting. This allows you to adjust the instantaneous short-circuit trip threshold to coordinate with other devices in your electrical system.
What does the LI trip function code mean on the KC341101021?
The LI designation indicates that the trip unit provides Long-Time (L) protection for standard overloads and Instantaneous (I) protection for short circuits.
What wire sizes are accepted by the lugs on the KC341101021?
The standard lugs on this K-Frame breaker accept wire gauges ranging from 4 AWG to 350 kcmil.
What is the modern replacement for the legacy KC341101021 breaker?
The legacy K-Frame series has been superseded by the PowerPact J-Frame series. The base modern equivalent is the JJA36110, though you will need to ensure it is configured with a 120-240VAC shunt trip to match the functionality of the 1021 suffix.
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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!!