{"product_id":"square-d-ma36400-400a-3-pole-plug-in-circuit-breaker","title":"Square D MA36400 - 400 A, 3-Pole Plug-In Circuit Breaker | AmpState","description":"\u003cdiv\u003e\n\u003cp\u003ePowerful, dependable protection for high-current branch circuits, the Square D MA36400 is a 400A, 3-pole plug-in molded case circuit breaker designed for panelboards and load centers. Built to deliver consistent performance under demanding loads, it's a smart choice for commercial, industrial, and multi-residential settings where reliability matters.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eFast, easy installation\u003c\/strong\u003e with a plug-in connection minimizes downtime during upgrades or replacements. The plug-in mounting style ensures secure seating in compatible panelboards, reducing the risk of loose connections that can compromise protection.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eThermal-magnetic protection you can trust\u003c\/strong\u003e integrates a trip unit that provides stable overload protection with precise, repeatable trips for short-circuit events. This means fewer nuisance trips during normal operation and strong response when faults occur.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eBuilt for compatibility and broad use\u003c\/strong\u003e designed to mate with matching OEM load centers and panelboards, the MA36400 is suitable for \u003cstrong\u003eresidential, commercial, and light industrial\u003c\/strong\u003e applications. Its 3-pole design is ideal for 3-phase systems common in larger installations, supporting reliable distribution across multiple circuits.\u003c\/p\u003e \u003ch3\u003eProduct highlights\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eAmperage rating:\u003c\/strong\u003e 400A\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePoles:\u003c\/strong\u003e 3-pole\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eMounting style:\u003c\/strong\u003e Plug-in\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Thermal-magnetic molded case circuit breaker\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePart number:\u003c\/strong\u003e MA36400\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eManufacturer:\u003c\/strong\u003e Square D\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eUse cases and practical applications\u003c\/h3\u003e\n\u003cp\u003eIdeal for replacing aging breakers in panelboards to safeguard large residential loads, commercial lighting circuits, HVAC feeders, and industrial distribution. The 3-pole design makes it suitable for 3-phase systems found in offices, retail spaces, and light manufacturing. With a 400A rating, you can support substantial loads without frequent trips, while the fast plug-in installation keeps downtime to a minimum during service or upgrades.\u003c\/p\u003e \u003cp\u003eIf your electrical setup requires dependable, OEM-compatible protection in a compact plug-in package, the MA36400 delivers reliable thermal-magnetic performance and straightforward integration into compatible Square D panelboards and load centers.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Amp State","offers":[{"title":"Default Title","offer_id":46355330302114,"sku":null,"price":710.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/square-d-ma36400-400-a-3-pole-plug-in-circuit-breaker-ampstate-193.webp?v=1788751068","url":"https:\/\/www.ampstate.com\/products\/square-d-ma36400-400a-3-pole-plug-in-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}