{"product_id":"jxd63s400a","title":"Siemens JXD63S400A - 400A, Circuit Breaker","description":"\u003cdiv\u003e\n\u003cp\u003eMeet the Siemens JXD63S400A — a 400A circuit breaker designed for demanding electrical environments where dependable overcurrent protection is non-negotiable. Built to integrate seamlessly with Siemens panelboards, switchboards, control panels, and OEM equipment, this breaker delivers precise protection for high-current distribution systems.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eWhy the Siemens JXD63S400A stands out\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003e400A current rating\u003c\/strong\u003e — ideal for main feeders and equipment-heavy installations, providing reliable interruption during overloads or fault conditions to safeguard downstream circuits.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eBroad compatibility\u003c\/strong\u003e — specifically engineered for use in panelboards, switchboards, control panels, and OEM configurations, enabling straightforward upgrades or custom builds within Siemens-heavy environments.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003e dependable overcurrent protection\u003c\/strong\u003e — designed to respond to abnormal currents, helping minimize downtime and protect valuable motors, drives, and other critical loads.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eSiemens-based integration\u003c\/strong\u003e — crafted to align with Siemens distribution practices, simplifying installation, commissioning, and ongoing maintenance for existing Siemens infrastructure.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003ePractical use cases\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eMain feeder protection in a 400A distribution panel feeding multiple motor control centers on an industrial line.\u003c\/li\u003e \u003cli\u003eProtection backbone for a commercial electrical room, isolating faults quickly to maintain operational continuity.\u003c\/li\u003e \u003cli\u003eOEM equipment applications where a robust, 400A protection device is required in a tailored enclosure.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003eKey installation considerations\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eEnsure the breaker matches the panel’s bus type and fits within the intended enclosure for proper operation.\u003c\/li\u003e \u003cli\u003eConfirm that the 400A rating aligns with system load and prospective short-circuit current to maintain selective coordination and safe shutdowns.\u003c\/li\u003e \u003cli\u003eFollow Siemens installation guidelines for terminal torque, mounting orientation, and wiring practices to maximize protection reliability.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eIn summary, the Siemens JXD63S400A is a purpose-built 400A circuit breaker crafted for reliability in industrial, commercial, and OEM applications. If you need robust, predictable overcurrent protection for main feeders, panelboards, switchboards, or motor control centers, this breaker provides a concrete, standards-aligned solution that integrates smoothly within Siemens-based electrical distribution strategies.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Siemens","offers":[{"title":"Default","offer_id":46390794420386,"sku":"JXD63S400A","price":1874.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/circuit_breaker_generic_97bf620a-68b7-4097-8e2e-e036a6b6363c.png?v=1765379944","url":"https:\/\/www.ampstate.com\/products\/jxd63s400a","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}