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The LC36450 SQUARE D 3P 450A 600V 35KA I LINE is a high-performance circuit breaker designed for reliable overload and short-circuit protection. With a three-pole configuration, it supports a maximum voltage of 600V and a short-circuit current rating of 35kA. Ideal for commercial and industrial applications, ensuring safety and efficiency.
Square D's I-Line design uses a bus-stab plug-in connection that clips directly onto the I-Line bus in compatible panelboards and switchboards — no separate mounting hardware is needed for the line-side connection. A load-side lug or terminal connection is still required. Always follow Square D installation instructions and local electrical code (CEC) requirements, and ensure the panel bus is de-energized before installation.
The LC/LA frame series has been largely superseded by newer Square D MCCB lines. Availability can be limited, and the LC36450 at 450A is frequently sourced as new-old-stock or reconditioned. Northern Breaker Group specializes in hard-to-find and obsolete breakers — contact us for current stock status and lead times.
The LC36450 is rated at 450A continuous and 35kA interrupting capacity at 600V, making it suitable as a main or feeder breaker in appropriately rated I-Line distribution equipment. However, the panelboard's bus ampacity, short-circuit rating, and CEC requirements must all be verified for your specific application. Contact our team — we're happy to help you confirm suitability for your installation.
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