{"product_id":"siemens-jxd63m350l-circuit-breaker","title":"Siemens | JXD63M350L | Circuit Breaker | 350A | 3-Pole","description":"\u003cdiv\u003e\n\u003cp\u003eMeet the Siemens JXD63M350L Circuit Breaker — a robust 350A, 3-pole protection device designed for high-demand, three-phase electrical feeds. Built for reliability in maintenance, retrofit, and replacement projects, this breaker ensures your system stays safe, compliant, and ready to perform when it matters most.\u003c\/p\u003e \u003ch3\u003eWhy this model stands out\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eExact compatibility\u003c\/strong\u003e — part number JXD63M350L is your best reference to ensure a seamless fit with Siemens panels and gear.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eHigh-current capability\u003c\/strong\u003e — certified for 350A service to protect heavy-load circuits without compromising stability.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eThree-pole design\u003c\/strong\u003e — ideal for balanced three-phase systems, delivering coordinated protection across all phases.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eMaintenance-friendly choice\u003c\/strong\u003e — purpose-built for retrofit and replacement workflows, simplifying spare-part management and downtime planning.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eKey specifications at a glance\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eAmperage: 350A\u003c\/li\u003e \u003cli\u003ePoles: 3-Pole\u003c\/li\u003e \u003cli\u003ePart number: JXD63M350L\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eIdeal use cases\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eMaintenance and service upgrades in industrial or commercial facilities with high-current three-phase loads.\u003c\/li\u003e \u003cli\u003eRetrofit projects where matching Siemens specifications is essential for safety and reliability.\u003c\/li\u003e \u003cli\u003eReplacement of worn or obsolete breakers in compatible Siemens panels to maintain electrical protection continuity.\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 is the best reference for compatibility, ensuring you don’t encounter mismatched specs in critical installations.\u003c\/p\u003e \u003ch3\u003eWhat problems it solves\u003c\/h3\u003e\n\u003cp\u003eBy providing precise overcurrent protection for 3-phase circuits, the Siemens JXD63M350L helps:\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003ePrevent equipment damage from overloads and short circuits.\u003c\/li\u003e \u003cli\u003eMinimize unplanned downtime by delivering rapid, predictable tripping behavior aligned with your panel’s design.\u003c\/li\u003e \u003cli\u003eMaintain safety and compliance in retrofit projects where exact Siemens specifications are required.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003ePractical tips for best results\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eBefore purchase, verify that your panel accepts the JXD63M350L family and that the electrical service rating aligns with your load profile.\u003c\/li\u003e \u003cli\u003eUse the exact part number (JXD63M350L) as the primary reference when checking cross-compatibility with existing equipment.\u003c\/li\u003e \u003cli\u003ePlan replacements during scheduled maintenance windows to minimize operational impact and ensure proper testing post-installation.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eChoose the Siemens JXD63M350L 350A 3-Pole Circuit Breaker for dependable, job-specific protection that aligns with Siemens panel ecosystems, simplifies retrofit paths, and supports high-current, three-phase applications with confidence.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Siemens","offers":[{"title":"Default Title","offer_id":46427065712802,"sku":"JXD63M350L","price":510.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/master_generic_a0994f42-7fad-49d1-911a-c2784022b8c9.png?v=1765492979","url":"https:\/\/www.ampstate.com\/products\/siemens-jxd63m350l-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}