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The MGA36600 SQUARE D 3P 300A 600V 18KA I LINE is a high-performance circuit breaker designed for reliable overcurrent protection in industrial applications. With a three-pole design and a voltage rating of 600V, it offers robust performance with an impressive interrupting capacity of 18KA. Ideal for demanding environments where safety is paramount.
The 'I-Line' designation refers to Square D's proprietary plug-in bus system, where the breaker clips directly onto the I-Line bus bars rather than using bolt-on connections. The MGA36600 is compatible with Square D I-Line panelboards and switchboards designed to accept this mounting style. It is not interchangeable with standard bolt-on or QO-style residential panels. Contact us with your panelboard model to confirm compatibility.
Availability of specific MGA-frame breakers can vary, as some models in this series have been discontinued or superseded by newer Square D frames. Northern Breaker Group specialises in sourcing obsolete and hard-to-find breakers across Canada. Whether new, surplus, or reconditioned stock is required, contact our Calgary, Edmonton, or Vancouver counters and we'll locate the unit or identify a suitable replacement.
Many Square D MGA-frame molded-case circuit breakers support factory-approved accessories including shunt trips, under-voltage releases, auxiliary contacts, and alarm switches. Accessory compatibility depends on the specific build of your unit. Let us know your requirements when requesting a quote and we'll confirm which accessories are available for this breaker.
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