{"product_id":"square-d-mh36400cba-circuit-breaker","title":"Square D | MH36400CBA | Circuit Breaker | 400A | 3-Pole | 600V","description":"\u003cdiv\u003e\n\u003cp\u003e\u003cstrong\u003eSquare D MH36400CBA Circuit Breaker\u003c\/strong\u003e — 400A, 3-Pole, 600V\u003c\/p\u003e \u003cp\u003eThis high-capacity circuit breaker from Square D is built for reliability in demanding electrical systems. The MH36400CBA is ideal for maintenance, retrofit, and replacement projects where exact specifications matter, ensuring you restore three-phase protection quickly and confidently.\u003c\/p\u003e \u003cp\u003eDesigned for compatibility with Square D panels and enclosures, this 400A, 3-pole unit delivers synchronized protection across all phases in systems up to 600V. Its precise part-number reference (MH36400CBA) is the best way to guarantee a match with your existing equipment.\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eAmperage\u003c\/strong\u003e: 400A — for high-current three-phase circuits in commercial or light-industrial settings\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePoles\u003c\/strong\u003e: 3-Pole — provides coordinated protection across all three phases\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVoltage\u003c\/strong\u003e: 600V — suitable for standard industrial distribution networks\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eCompatibility\u003c\/strong\u003e: Part number MH36400CBA ensures you’re selecting the exact replacement for your Square D system\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eApplication\u003c\/strong\u003e: Primarily intended for maintenance, retrofit, and replacement where matching specs are required\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003eImportant compatibility note\u003c\/strong\u003e: Confirm fit and ratings before ordering. The part number MH36400CBA is the best reference for compatibility with your panel labeling and service configuration.\u003c\/p\u003e \u003cp\u003eIdeal use cases include:\u003c\/p\u003e \u003cul\u003e \u003cli\u003eReplacing a failed breaker in compatible Square D panels\u003c\/li\u003e \u003cli\u003eRetrofit projects where a 400A, 3-pole, 600V unit is required\u003c\/li\u003e \u003cli\u003eMaintenance shutdowns that demand quick, reliable restoration of three-phase power\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003ePractical installation and handling tips\u003c\/p\u003e \u003cul\u003e \u003cli\u003ePower down and follow appropriate lockout\/tagout procedures before replacing a breaker\u003c\/li\u003e \u003cli\u003eVerify your panel’s labeling matches a 400A, 3-pole, 600V configuration\u003c\/li\u003e \u003cli\u003eEnsure the replacement matches the mounting and bus connection style used in your enclosure\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eChoose Square D for dependable circuit protection and a clear path to serviceability in high-demand electrical environments. The MH36400CBA is designed to meet the precision requirements of professional electrical installations, delivering peace of mind when upgrading or maintaining your three-phase power distribution.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Square D","offers":[{"title":"Default Title","offer_id":46426344489122,"sku":"MH36400CBA","price":2010.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/master_generic_a085eff1-75dd-47ee-b131-4c8df8f0489b.png?v=1765492976","url":"https:\/\/www.ampstate.com\/products\/square-d-mh36400cba-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}