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The LA36300 Square D 3P 300A 600V I-Line circuit breaker delivers reliable power protection with a 22KA interrupting capacity. Designed for three-phase applications, it ensures safety and efficiency in commercial and industrial settings. Ideal for motor control and distribution systems, this breaker combines durability with superior performance for your electrical needs.
The LA36300 uses Square D's I-Line plug-in bus system, which is an industrial/commercial connection method exclusive to Square D I-Line panelboards and switchboards. It is NOT compatible with residential QO or Homeline loadcentres, which use a different bus design. I-Line breakers are built for higher-capacity, three-phase industrial and commercial distribution applications.
Yes — Northern Breaker Group specializes in obsolete and hard-to-find breakers, including legacy Square D I-Line inventory. Whether you need a new, refurbished, or surplus unit, contact our Calgary, Edmonton, or Vancouver branches for a quote and availability check.
Yes. The LA36300's 300A, 3-pole, 600V rating makes it well suited for motor feeder and distribution applications in commercial and industrial settings. For motor branch circuit protection, verify that the breaker's interrupting rating (22kA) meets or exceeds the available fault current at the installation point, and confirm motor horsepower and code compliance with your engineer or electrician.
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