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Square D KAL36250-1021 Molded Case Circuit Breaker
- 250A
- 3 Pole
- Unit Mount
Square D
KAL36250-1021
Molded Case Circuit Breaker
Brand
Square D
SKU
KAL36250-1021
Quantity
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Square D KAL36250-1021 - 250A 3 Pole Molded Case Circuit Breaker
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Description
Designed for advanced control, this 250-amp molded case circuit breaker includes a factory-installed 120-240VAC shunt trip for remote shutdown capabilities. It integrates seamlessly into Square D enclosures, QED switchboards, and motor control centers requiring unit-mount configurations. Delivering reliable thermal-magnetic protection with an adjustable magnetic trip, it handles up to 42kAIC at 240VAC. For modern upgrades, this legacy unit crosses over to the PowerPacT JGL36250.Specifications
| Brand | Square D |
|---|---|
| Part Number | KAL36250-1021 |
| Series | KAL |
| Amperage | 250A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 240VAC, 480VAC, 600VAC, 250VDC |
| Phase | 3 |
| AIC Rating | 42kA @ 240VAC, 25kA @ 480VAC, 22kA @ 600VAC, 10kA @ 250VDC |
| Frame Type | KAL |
|---|---|
| Terminal Type | Lugs |
| For Use With | Square D Enclosures, Switchboards, Motor Control Centers |
| 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 | Line and Load Lugs Included, Shunt Trip (Factory Installed) |
| Standards | CSA C22.2 No. 5, IEC 60947-2, NEMA AB 1, UL 489 |
| Approval | CE, CSA, IEC, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Non-Interchangeable Trip |
Product FAQs
8 answersWhat does the -1021 suffix mean on the KAL36250-1021?
The 1021 suffix indicates that this circuit breaker includes a factory-installed 120/240VAC shunt trip. This allows the breaker to be tripped remotely via an external control signal.
What is the modern replacement for the legacy KAL36250-1021?
The legacy Square D K-Frame series has been discontinued. The modern equivalent is the PowerPacT J-Frame series, specifically the JGL36250. You will need to verify the shunt trip accessory requirements and panel fitment for your specific application.
Can I install the KAL36250-1021 in an I-Line panelboard?
No. The KAL36250-1021 is a unit mount, feed-thru circuit breaker designed for standard Square D enclosures, switchboards, and motor control centers. It does not have the plug-on jaw connections required for I-Line panelboards.
What size wire can the lugs on the KAL36250-1021 accept?
The standard lugs on this 250A breaker accept aluminum or copper wire ranging from 4 AWG to 350 kcmil. Ensure you torque the connections to the manufacturer specifications printed on the breaker faceplate.
Is the magnetic trip adjustable on the KAL36250-1021?
Yes. While the thermal overload protection is fixed, the instantaneous magnetic trip is adjustable. This allows you to fine-tune the short circuit response to coordinate with downstream equipment or motor inrush currents.
Can this breaker be used in DC applications?
Yes, the KAL36250-1021 is rated for up to 250VDC with an interrupting capacity of 10kA. It is suitable for both AC and DC systems within its voltage limits.
How do I wire the shunt trip on the KAL36250-1021?
The factory-installed 120/240VAC shunt trip comes with external wiring leads. These leads must be connected to a remote control circuit, such as a push button or fire alarm relay, that provides the required voltage to activate the trip mechanism.
What does the push-to-trip button do on this K-Frame breaker?
The push-to-trip feature allows you to manually trip the breaker to verify the mechanical operation of the tripping mechanism. It is a safe way to exercise the breaker without exposing personnel to live electrical parts.
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Reviews
Review summary
Customers rate this product 5.0 out of 5 based on 3 reviews.
Total 5 star reviews: 3 Total 4 star reviews: 0 Total 3 star reviews: 0 Total 2 star reviews: 0 Total 1 star reviews: 0
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Rating
3 reviews
- GGGavin G.ReviewingSquare D KAL36110 - 110A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars9/9/23Great service
Needed this breaker asap and they helped me get it quickly and they were very helpful.
- JJamesReviewingSquare D KAL36250 - 250A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars6/25/18Lightning Fast Turn Around
Thanks to SuperBreakers we were able to get the part we needed, and get back online.
- GRGreg R.ReviewingSquare D KAL26200 - 200A 2 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars1/29/18Excellent Service
The breaker we ordered was needed to get one of or machines back up and running. We ordered it next day air and it arrived right on time.
Thank you,