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Square D KH26150AB Molded Case Circuit Breaker
- 150A
- 2 Pole
- I-Line
Square D
KH26150AB
Molded Case Circuit Breaker
Brand
Square D
SKU
KH26150AB
Quantity
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Square D KH26150AB - 150A 2 Pole Molded Case Circuit Breaker
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Description
Engineered for industrial applications, the Square D KH26150AB is a 150A MCCB from the legacy K-Frame family. It provides reliable thermal-magnetic protection with LI trip functions. This unit mounts into Square D I-Line panelboards and switchboards via an A-B phase connection. For modern upgrades, it is replaced by the PowerPact HGA261501. Rated for 65kAIC at 240VAC, it is HACR rated and includes load side lugs.Specifications
| Brand | Square D |
|---|---|
| Part Number | KH26150AB-R |
| Series | KH |
| Amperage | 150A |
| Poles | 2 |
| Mounting Style | I-Line |
| Voltage | 240VAC, 480VAC, 600VAC, 250VDC |
| Phase | 1 |
| AIC Rating | 65kA @ 240VAC, 35kA @ 480VAC, 25kA @ 600VAC, 10kA @ 250VDC |
| Frame Type | KH |
|---|---|
| Terminal Type | Lugs |
| For Use With | Square D I-Line Panelboards and Switchboards |
| 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 | Shunt Trip, Auxiliary Switch, Undervoltage Release, Alarm Switch, Padlock Attachment |
|---|---|
| Accessories | Load Side Lugs Included |
| Standards | CSA C22.2 No. 5, HACR, IEC 60947-2, NEMA AB 1, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, High Interrupting Capacity |
Product FAQs
5 answersWhat panelboards are compatible with the KH26150AB circuit breaker?
This breaker is designed exclusively for Square D I-Line panelboards and switchboards. It features an I-Line style plug-in connection that mounts directly to the interior bus assembly.
What does the AB suffix mean in the KH26150AB catalog number?
The AB suffix indicates the specific phase connection for the I-Line plug-in jaws. This breaker is configured to connect to the A and B phases on the panelboard bus.
How does the trip unit function on the KH26150AB?
It features a thermal magnetic trip unit with a fixed thermal element for long-time overload protection at 150 Amps, and an adjustable magnetic element. The magnetic trip threshold can be adjusted in the field to coordinate with downstream loads and prevent nuisance tripping during motor inrush currents.
Is the Square D KH frame still in active production?
The KH frame is a legacy molded case circuit breaker that has been superseded by the modern PowerPact series. However, exact KH26150AB replacements remain available for maintaining existing I-Line panelboards without requiring a complete panel upgrade.
Can I use the KH26150AB in a standard QO load center?
No, this is an I-Line molded case circuit breaker designed specifically for commercial and industrial I-Line panelboards. It will not fit in standard residential QO or Homeline load centers.
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Reviews
Review summary
Customers rate this product 5.0 out of 5 based on 1 review.
Total 5 star reviews: 1 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
1 review
- DPDouglas P.ReviewingSquare D KH36225 - 225A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars5/26/23I got it the next
I got it the next day and it worked just like it should. Thank you