{"product_id":"mi320","title":"Square D MI320 - 20A, 240VAC, 3-Pole, Circuit Breaker","description":"\u003cdiv\u003e\n\u003cp\u003eIntroducing the \u003cstrong\u003eSquare D MI320\u003c\/strong\u003e — a rugged 20A, 240V AC, 3-pole circuit breaker designed for dependable overcurrent protection in demanding electrical environments.\u003c\/p\u003e \u003cp\u003eKey features:\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eThree-pole configuration\u003c\/strong\u003e for true 3-phase protection, ensuring all live conductors trip together in panelboards, switchboards, and control panels.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003e20 ampere current rating\u003c\/strong\u003e at up to \u003cstrong\u003e240 VAC\u003c\/strong\u003e to handle motor loads and branch circuits common in industrial settings.\u003c\/li\u003e \u003cli\u003eVersatile for \u003cstrong\u003epanelboards\u003c\/strong\u003e, \u003cstrong\u003eswitchboards\u003c\/strong\u003e, and \u003cstrong\u003econtrol panels\u003c\/strong\u003e in distribution setups and motor control centers.\u003c\/li\u003e \u003cli\u003eDesigned for \u003cstrong\u003eindustrial, commercial, and OEM applications\u003c\/strong\u003e where safe operation and reliable protection matter.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eWhy this matters for your system:\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eProtects equipment and wiring from overcurrent, preventing insulation damage and unplanned downtime.\u003c\/li\u003e \u003cli\u003eDelivers clear, predictable disconnection behavior in 3-phase systems, reducing the risk of damage to motors and drives.\u003c\/li\u003e \u003cli\u003eCompact, standardized form factor fits common electrical distribution enclosures and MCCs.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eIdeal use cases:\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eMotor control centers and machine panels in manufacturing facilities.\u003c\/li\u003e \u003cli\u003eDistribution panels in commercial buildings with 3-phase service.\u003c\/li\u003e \u003cli\u003eOEM equipment where a reliable 3-pole, 20A breaker is needed for integrated protection.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eCompared to single- or two-pole solutions, the MI320’s 3-pole design provides simultaneous disconnection of all conductors, which is essential for 3-phase circuits and safer maintenance. It’s a practical choice when you need consistent protection across multiple lines without sacrificing space or installation ease.\u003c\/p\u003e \u003cp\u003ePractical tips for installation and operation:\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eVerify compatibility with your panelboard or MCC frame and ensure the correct mounting accessories are used for \u003cstrong\u003eSquare D MI320\u003c\/strong\u003e.\u003c\/li\u003e \u003cli\u003ePair with matching devices in your electrical distribution scheme to maintain coordinated protection across the system.\u003c\/li\u003e \u003cli\u003eKeep spare units on hand for quick replacement in critical applications to minimize downtime.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eTrust the Square D MI320 for reliable, industry-grade overcurrent protection in demanding environments. This 20A, 240VAC, 3-Pole breaker is built to endure the rigors of industrial and commercial electrical distribution, giving you peace of mind and consistent protection for your critical loads.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Square D","offers":[{"title":"Default","offer_id":46390965960866,"sku":"MI320","price":162.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/circuit_breaker_generic_f17ee2f4-d108-4f38-aca7-20d5c9a1809d.png?v=1765381271","url":"https:\/\/www.ampstate.com\/products\/mi320","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}