Square D KAL261501021 Molded Case Circuit Breaker
- 150A
- 2 Pole
- Unit Mount
Quantity
Square D KAL261501021 - 150A 2 Pole Molded Case Circuit Breaker
New
Quantity
Description
Designed for automated safety protocols, this specialized 150-amp K-Frame model incorporates a 120VAC shunt trip mechanism. This allows facility managers to remotely open the contacts during emergency situations or automated control sequences. The component fits perfectly into existing Square D enclosures that originally utilized the KAL series. For complete modernization projects, engineers typically specify the PowerPact JDL26150SA as the current-generation equivalent.Specifications
| Brand | Square D |
|---|---|
| Series | KAL |
| Amperage | 150A |
| Poles | 2 |
| Mounting Style | Unit Mount |
| Voltage | 240VAC, 480VAC, 600VAC, 250VDC |
| Phase | 1 |
| 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, Padlock Attachment |
|---|---|
| Accessories | Line and Load Side 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, Trip-Free Mechanism, Common Trip |
Product FAQs
8 answersWhat does the "1021" suffix indicate on the KAL261501021 circuit breaker?
The 1021 suffix designates that this breaker includes a factory-installed 120/240VAC shunt trip accessory. This allows the breaker to be tripped remotely via a separate control circuit, which is commonly used for emergency stops or automated safety shutdowns.
How is the KAL261501021 installed in an electrical system?
This is a unit-mount, feed-thru circuit breaker. It is designed to be bolted directly to the mounting pan or backplate of Square D enclosures, switchboards, or motor control centers, rather than plugging onto a busbar.
Is the thermal-magnetic trip unit on the KAL261501021 suitable for DC circuits?
Yes, the thermal-magnetic trip mechanism in this breaker allows it to safely protect direct current circuits up to 250VDC, providing a 10kAIC interrupting rating for DC applications.
Is the Square D KAL261501021 a current production model?
The KAL series is a legacy K-Frame molded case circuit breaker. While it is no longer the primary active series, it remains widely used and supported for existing Square D switchboards and motor control centers. PowerPact J-Frame breakers are typically used for modern replacements, though retrofitting may require different mounting hardware.
What protection does the LI trip function provide on this breaker?
The LI designation means the breaker features Long-Time and Instantaneous trip functions. The Long-Time (thermal) function protects against sustained overloads, while the Instantaneous (magnetic) function provides immediate tripping during severe short circuits.
Can I install the KAL261501021 in an I-Line panelboard?
No, the KAL261501021 is a unit-mount, feed-thru circuit breaker designed for Square D enclosures, switchboards, and motor control centers. It does not have the plug-on jaw connections required for I-Line panelboards.
Can I adjust the trip settings on the KAL261501021?
The thermal (Long-Time) protection is fixed at 150 amps and cannot be changed. However, the magnetic (Instantaneous) short-circuit protection is adjustable, allowing you to fine-tune the trip response for specific motor or equipment inrush currents.
Does the shunt trip coil on the KAL261501021 require a momentary or continuous signal?
While the remote trip signal can be momentary, Square D factory-installed shunt trips typically feature an internal coil clearing contact. This contact automatically opens the control circuit once the breaker trips, preventing the shunt trip coil from burning out even if the trip signal is continuously maintained.
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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,