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The MJA36500 Square D 3P 500A 600V circuit breaker is designed for reliable protection with a 25KA interrupting capacity. Ideal for industrial and commercial applications, this three-pole breaker ensures optimal performance and safety for your electrical systems. Perfect for high-load demands, it is built for durability and efficiency.
The MJA36500 uses Square D's I-Line plug-in mounting system, so it is compatible with Square D I-Line panelboards and switchboards designed to accept I-Line breakers. It is not suitable for residential loadcentres such as QO or Homeline panels. Contact our team with your panel model number to confirm compatibility before ordering.
The Square D MJA frame series is considered obsolete/legacy in many configurations. Northern Breaker Group specializes in sourcing hard-to-find and discontinued breakers across Canada. Whether you need a new old-stock or a verified refurbished unit, contact our Calgary, Edmonton, or Vancouver counter and we'll do our best to locate the MJA36500 for you.
Yes — at 500A, 600V, 3-pole with a 25kA interrupting rating, the MJA36500 is well-suited for protecting large motor feeders and distribution circuits in industrial and commercial environments. However, for motor branch-circuit protection, always verify that the breaker's characteristics (instantaneous trip range, etc.) meet the requirements of the Canadian Electrical Code (CEC) for your specific application. Our specialists can assist with application questions.
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