Square D KAL36125-1021 KAL361251021 - 125A 3 Pole Molded Case Circuit Breaker
- 125A
- 3 Pole
- Unit Mount
Quantity
Square D KAL361251021 - 125A 3 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
Description
Engineered for industrial facilities, the Square D KAL36125-1021 is a 3-pole, 125A molded case circuit breaker. This unit-mount device installs into Square D switchboards and motor control centers. As a legacy K-Frame model, it is replaced by PowerPact H-Frame breakers like the HGL36125. Rated 25kAIC at 480VAC, it features a factory-installed 120-240VAC shunt trip for remote disconnects. It also includes adjustable magnetic trip settings and Visi-Trip indication.Specifications
| Brand | Square D |
|---|---|
| Series | KAL |
| Amperage | 125A |
| 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 | K |
|---|---|
| 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 | Shunt Trip (120-240VAC) |
| Standards | CSA C22.2 No. 5, IEC 60947-2, NEMA AB 1, UL 489 |
| Approval | CSA, IEC, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated |
Product FAQs
7 answersWhat does the -1021 suffix indicate on the KAL361251021 circuit breaker?
The -1021 suffix designates that this breaker is equipped with a factory-installed 120/240VAC shunt trip, allowing for remote circuit interruption.
What is the modern replacement for the legacy KAL361251021?
This legacy K-Frame breaker is functionally succeeded by the modern Square D PowerPact H-Frame series. The equivalent replacement is the HGL36125SA, which includes a matching 120VAC shunt trip. Upgrading to the PowerPact series may require mounting adaptations depending on your existing enclosure.
How is the KAL361251021 mounted within an electrical system?
This is a unit-mount, feed-thru circuit breaker. It bolts directly to an enclosure backpan or mounting plate and utilizes wire lugs on both the line and load sides, rather than plugging into a busbar.
How does the trip unit operate on the KAL361251021?
It utilizes a thermal-magnetic trip unit with LI (Long-Time and Instantaneous) functions. The thermal overload protection is fixed, while the magnetic short-circuit response is adjustable to coordinate with other devices in your system.
Is the KAL361251021 rated for direct current (DC) systems?
Yes, in addition to its AC ratings, this breaker is rated for use in DC systems up to 250VDC, providing a 10kA interrupting capacity for industrial DC applications.
What equipment is compatible with this K-Frame breaker?
The KAL361251021 is designed for installation in compatible Square D enclosures, switchboards, and motor control centers that accept legacy unit-mount K-Frame breakers.
What are the wire size requirements for the KAL361251021 terminals?
The factory-installed lugs accept wire sizes ranging from 4 AWG to 350 kcmil. The terminals are dual-rated for both aluminum (Al) and copper (Cu) conductors, making them suitable for a variety of field wiring applications.
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Reviews
Review summary
Customers rate this product 5.0 out of 5 based on 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,