Engineered for commercial and industrial applications, the Square D KAL36080 is a 3-pole, 80A molded case circuit breaker. It provides robust thermal-magnetic protection with long-time and instantaneous (LI) trip functions. This unit mount breaker installs into standard Square D enclosures and switchboards. As a legacy K-Frame device, it is commonly replaced by the modern PowerPact H-Frame (HGL36080). Rated for 25 kAIC at 480VAC, it includes factory-installed line and load lugs.
What types of equipment is the KAL36080 compatible with?
This unit mount breaker is designed for use in standard Square D enclosures, switchboards, and motor control centers. It features a feed-thru connection and is not compatible with I-Line panelboards.
What is the adjustable magnetic trip range for the KAL36080?
The KAL36080 features an adjustable magnetic trip with a range of 400A on the low setting to 800A on the high setting. This allows you to tune the instantaneous short-circuit response for your specific application.
What does the LI trip function on the KAL36080 indicate?
The LI designation means this thermal magnetic breaker provides Long-Time (L) overload protection and Instantaneous (I) short-circuit protection. The thermal element is fixed, while the magnetic instantaneous response can be adjusted between 400A and 800A.
What is the recommended lug torque for the KAL36080?
The standard AL250KA mechanical lugs on this breaker should be torqued to 250 lb-in. Always use a calibrated torque tool to ensure a secure, code-compliant connection.
Is the Square D KAL36080 obsolete, and what is the modern replacement?
The legacy K-Frame KAL36080 has been discontinued by the manufacturer. It is commonly replaced by the modern PowerPact H-Frame series, specifically the HGL36080, which provides an equal or greater interrupting rating.
What safety precautions should be taken when installing the KAL36080?
Installation should only be performed by a qualified electrician. Ensure all power sources are completely de-energized and locked out before mounting the breaker or terminating the conductors. Verify that the lugs are torqued to the manufacturer specification of 250 lb-in to prevent thermal failure.
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Customers rate this product 5.0 out of 5 based on 3 reviews.