Square D KC34200-1021 Molded Case Circuit Breaker
- 200A
- 3 Pole
- I-Line
Quantity
Square D KC34200-1021 - 200A 3 Pole Molded Case Circuit Breaker
New
Quantity
Description
Part of the legacy K-Frame lineup, this 200-amp molded case circuit breaker provides reliable long-time and instantaneous trip functions for industrial power systems. It installs into Square D I-Line panelboards and switchboards, utilizing a plug-on design for efficient phase connections. Featuring a factory-installed shunt trip mechanism, the unit allows remote tripping capabilities for enhanced facility safety. This model is superseded by the JJA36200SA in modern applications.Specifications
| Brand | Square D |
|---|---|
| Part Number | KC34200-1021 |
| Series | KC |
| Amperage | 200A |
| 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, Alarm Switch, Undervoltage Release |
|---|---|
| Accessories | Load Side Lugs Included, Shunt Trip (Factory Installed) |
| 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 |
Product FAQs
7 answersWhat does the -1021 suffix indicate on the KC34200-1021?
The -1021 suffix designates that the breaker comes with a factory-installed 120 to 240VAC shunt trip accessory. This allows the breaker to be tripped remotely via an external control signal.
What panels are compatible with this breaker?
This unit features an I-Line style plug-in connection and is engineered exclusively for installation in Square D I-Line panelboards and switchboards.
What wire sizes do the terminal lugs accommodate?
The included lugs accept wire gauges ranging from 4 AWG up to 350 kcmil.
How does the adjustable magnetic trip function work on this unit?
The thermal-magnetic trip unit features a fixed thermal element for standard overload protection and an adjustable magnetic element. This allows you to tune the instantaneous trip point to coordinate with motor inrush currents or specific system requirements.
What does the LI trip function code mean?
The LI designation indicates that the breaker provides Long-Time (L) overload protection and Instantaneous (I) short-circuit protection.
Can this breaker be used in DC power systems?
Yes, in addition to its AC voltage ratings, this breaker is rated for use on 250VDC systems with an interrupting capacity of 10kA.
Is the KC frame a current or legacy product?
The KC frame is part of the legacy Square D K-Frame series. It is commonly used to support, maintain, and expand existing I-Line power distribution systems.
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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!!