Serving industrial and commercial power distribution needs, this 100A K-Frame unit delivers reliable long-time and instantaneous protection. The thermal-magnetic design ensures consistent performance across demanding electrical environments. It mounts into legacy Square D switchboards, individual enclosures, and motor control centers. For modern upgrades, this specific profile has been superseded by the PowerPacT HJL26100 series. Featuring a 25kAIC rating at 480VAC, it handles faults safely.
HACR Rated, Visual Trip Indicator, Common Trip, Trip-Free Mechanism
Product FAQs
7 answers
What equipment is the KAL26100 compatible with?
This unit-mount breaker is designed for use in legacy Square D switchboards, motor control centers, and individual enclosures that accept K-Frame breakers.
What is the standard lug kit for the KAL26100?
The standard mechanical lug kit is the AL250KA, which accepts 4 AWG to 350 kcmil aluminum or copper wire.
How does the trip unit on the KAL26100 operate?
It features a thermal-magnetic trip unit with a fixed thermal element for overload protection and an adjustable magnetic element, allowing you to set the instantaneous short-circuit trip threshold.
Is the Square D KAL26100 still in active production?
The KAL series is a legacy K-Frame breaker. While exact replacements depend on your panel mounting hardware, Square D officially transitioned this series to the modern PowerPact H-Frame and J-Frame families.
Can the KAL26100 be reverse fed?
Yes, standard thermal-magnetic KAL breakers can be back-fed because they are not marked with line and load restrictions. However, if equipped with a ground-fault module, reverse feeding is not permitted.
Can this breaker be used in DC applications?
Yes, the KAL26100 is rated for up to 250VDC with a 10kA interrupting capacity, making it suitable for specific direct current systems.
What does the feed-thru connection type mean for installation?
A feed-thru, or unit-mount, configuration means the breaker bolts directly to the mounting surface or enclosure backpan rather than plugging into a busbar. Both the line and load sides require wired lug connections.
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Reviews
Review summary
Customers rate this product 5.0 out of 5 based on 3 reviews.