Built for robust power distribution, the Square D KH26100AB is a 2-pole, 100A molded case circuit breaker from the legacy K-Frame series. It delivers reliable thermal-magnetic protection with long-time and instantaneous (LI) trip functions. This unit mounts into Square D I-Line panelboards and switchboards. As a legacy component, it maintains existing systems and is officially replaced by the HGA261001 model. Featuring an AB phase connection, it is rated 35kAIC at 480VAC and is HACR rated.
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
6 answers
What type of panelboards accept the Square D KH26100AB?
This breaker is designed specifically for installation in Square D I-Line panelboards and switchboards.
What does the AB suffix in the KH26100AB catalog number indicate?
The AB designates the phase connection. This specific breaker is configured to connect to the A and B phases on the I-Line bus.
What wire sizes and materials are accepted by the lugs on the KH26100AB?
The included lugs accept either aluminum or copper conductors ranging from 4 AWG to 350 kcmil.
How is the trip unit configured on this K-Frame breaker?
It features a thermal magnetic trip unit with long-time and instantaneous functions. The thermal protection is fixed, while the magnetic instantaneous trip setting is adjustable.
Is the KH26100AB a current production model?
The KH26100AB is a legacy K-Frame molded case circuit breaker. For modern panel upgrades, Square D officially replaces this unit with the PowerPact H-Frame series, specifically catalog number HGA261001.
How does this breaker mount to the busbar?
It utilizes an I-Line style plug-in connection. The breaker jaws clamp directly onto the I-Line bus assembly, eliminating the need for bolt-on bus connections.
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Reviews
Review summary
Customers rate this product 5.0 out of 5 based on 1 review.