Square D KH26100AC Molded Case Circuit Breaker
- 100A
- 2 Pole
- I-Line
Quantity
Square D KH26100AC - 100A 2 Pole Molded Case Circuit Breaker
New
Quantity
Description
A reliable component for commercial applications, the Square D KH26100AC is a 2-pole, 100A molded case circuit breaker. It provides dependable thermal-magnetic protection with long-time and instantaneous (LI) trip functions. This breaker mounts into Square D I-Line panelboards and switchboards. As a legacy component, it is used for system maintenance and is officially replaced by the HGA261002 model. Rated 35kAIC at 480VAC, it features an AC phase connection and HACR rating.Specifications
| Brand | Square D |
|---|---|
| Part Number | KH26100AC |
| Series | KH |
| Amperage | 100A |
| Poles | 2 |
| Mounting Style | I-Line |
| Voltage | 240VAC, 480VAC, 600VAC, 250VDC |
| Phase | 1 |
| AIC Rating | 65kA @ 240VAC, 35kA @ 480VAC, 25kA @ 600VAC, 10kA @ 250VDC |
| 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 |
|---|---|
| Accessories | Load Side Lugs Included (AL250KA) |
| Standards | CSA C22.2 No. 5, HACR, NEMA AB 1, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, High Interrupting Capacity |
Product FAQs
8 answersWhat panelboards are compatible with the KH26100AC circuit breaker?
This breaker is designed exclusively for use in Square D I-Line panelboards and switchboards. It features a plug-in design that mounts directly onto the I-Line bus and cannot be used in standard NQ, NF, QO, or Homeline load centers.
What does the "AC" suffix mean in the KH26100AC catalog number?
The "AC" suffix indicates the breaker's phase connection configuration. It means the line-side plug-in jaws are factory-configured to connect specifically to the A and C phases on the I-Line busbar.
Is the Square D KH26100AC still in active production?
No, the KH26100AC is a legacy K-Frame circuit breaker. For new installations or direct upgrades, it has been officially replaced by the modern Square D PowerPact H-Frame series, specifically the HGA261002 model.
How does the I-Line plug-in connection work on the KH26100AC?
The I-Line mounting system utilizes factory-installed plug-in jaws on the line side of the breaker. These jaws snap directly onto the panelboard's busbar, eliminating the need for line-side wire connections and speeding up installation. Load-side connections are made via standard lugs.
How does the trip unit function on the KH26100AC?
This breaker uses a thermal-magnetic trip unit with Long-Time and Instantaneous (LI) functions. The thermal element provides fixed overload protection, while the magnetic element is adjustable, allowing electricians to fine-tune short-circuit protection for specific load requirements.
Is the KH26100AC suitable for HVAC applications?
Yes, this breaker is HACR rated. It is approved for use with heating, air conditioning, and refrigeration equipment, providing the necessary group motor protection required for these systems.
Can the KH26100AC be used in direct current (DC) systems?
Yes, in addition to its AC ratings, this breaker is rated for up to 250VDC with an interrupting capacity of 10 kAIC. This makes it suitable for industrial DC control circuits and specific battery backup applications.
Does the KH26100AC feature a push-to-trip mechanism?
Yes, like most Square D molded case circuit breakers, it includes a push-to-trip button. This allows maintenance personnel to manually trip the breaker to verify the mechanical operation of the tripping mechanism without exposing themselves to live parts.
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Reviews
Review summary
Customers rate this product 5.0 out of 5 based on 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