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Square D KH26225AB Molded Case Circuit Breaker
- 225A
- 2 Pole
- I-Line
Square D
KH26225AB
Molded Case Circuit Breaker
Brand
Square D
SKU
KH26225AB
Quantity
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Square D KH26225AB - 225A 2 Pole Molded Case Circuit Breaker
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Description
Providing essential long-time and instantaneous protection, the KH26225AB delivers reliable thermal-magnetic performance for commercial and industrial systems. This 2-pole, 225A molded case circuit breaker is engineered for A-B phase connections. It installs into Square D I-Line panelboards and switchboards. For modern upgrades, this unit is superseded by the JJA26225 model. Rated for 35 kAIC at 480VAC, this breaker handles demanding fault currents.Specifications
| Brand | Square D |
|---|---|
| Part Number | KH26225AB |
| Series | KH |
| Amperage | 225A |
| 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 | I-Line Phase Connection A-B |
| 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, Phase Connection AB |
Product FAQs
7 answersWhat does the AB suffix mean in the KH26225AB catalog number?
The AB suffix indicates the breaker is configured to connect to the A and B phases of a Square D I-Line panelboard or switchboard bus.
What is the modern replacement for the legacy Square D KH26225AB circuit breaker?
The KH26225AB is a legacy K-Frame breaker. For modern panel upgrades or replacements, it is typically superseded by the Square D PowerPact J-Frame series, specifically the JJA26225 model.
How does the KH26225AB install into a panelboard?
This breaker features an I-Line style plug-in connection. It uses plug-on jaws to attach directly to the busbar of compatible Square D I-Line panelboards and switchboards, allowing for rapid installation without separate mounting hardware.
Can the KH26225AB be used in DC electrical systems?
Yes, this thermal-magnetic circuit breaker is rated for use in DC applications up to 250VDC, providing an interrupting capacity of 10kAIC at that voltage.
What wire sizes are compatible with the load-side lugs on the KH26225AB?
The standard lugs on this breaker accept aluminum or copper wire ranging from 4 AWG to 350 kcmil.
Are the trip settings adjustable on the KH26225AB?
The thermal (long-time) trip function is fixed at 225 amps, but the magnetic (instantaneous) trip function is adjustable to allow for coordination with other overcurrent devices in your system.
What type of protection does the LI trip function provide?
The LI designation means the breaker provides Long-Time (thermal) protection against sustained overloads and Instantaneous (magnetic) protection against short circuits.
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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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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