{"product_id":"siemens-jxd63b400-400a-3p-600v-circuit-breaker","title":"Siemens JXD63B400 400A 3P 600V Circuit Breaker | AmpState","description":"\u003cdiv\u003e\n\u003cp\u003eMeet the Siemens JXD63B400—an all‑purpose 400 A, 3‑pole, 600 V circuit breaker designed to protect panelboards, load centers, and electrical distribution networks. This direct part‑number match is a smart choice for teams that value precise fit and reliable protection when swapping or stocking spares.\u003c\/p\u003e \u003ch3\u003eKey specifications at a glance\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eManufacturer:\u003c\/strong\u003e Siemens\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e JXD63B400\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Circuit Breaker\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eAmpere Rating:\u003c\/strong\u003e 400 A\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePoles:\u003c\/strong\u003e 3\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVoltage:\u003c\/strong\u003e 600 V\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eAvailability:\u003c\/strong\u003e AmpState\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eWhy this model stands out\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\u003cstrongdirect part-number match:\u003e The JXD63B400 is ideal when your project, maintenance schedule, or spare inventory hinges on precise Siemens specifications to prevent fit issues and downtime.\u003c\/strongdirect\u003e\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eHigh-current protection in compact, three‑pole form:\u003c\/strong\u003e With a 400 A rating and 3 poles, it provides robust protection for multi‑phase circuits in commercial or industrial panels.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003e600 V capability:\u003c\/strong\u003e Suitable for demanding electrical distribution environments where higher voltage protection is required.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eTrusted Siemens reliability:\u003c\/strong\u003e Built for panelboards and load centers that rely on consistent performance and predictable trip characteristics.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eIdeal use cases\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eMaintenance and refurbishment projects where panel replacements must match the exact part number for uninterrupted compatibility.\u003c\/li\u003e \u003cli\u003ePanel builders stocking spare inventory to shorten downtime on installation or retrofit jobs.\u003c\/li\u003e \u003cli\u003eElectrical distribution upgrades in facilities that operate at 600 V with multi‑phase circuits.\u003c\/li\u003e \u003cli\u003eReplacements in commercial or light industrial systems that require a 3P protection solution with a 400 A rating.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eHow it integrates and what to check\u003c\/h3\u003e\n\u003cp\u003eThis Siemens circuit breaker is designed for use in panelboards and load centers as part of a broader electrical distribution strategy. If you’re unsure about fit, AmpState offers support to confirm compatibility—simply reach out and we’ll help verify the match to your equipment and panel rating.\u003c\/p\u003e \u003ch3\u003ePractical tips for procurement and maintenance\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eKeep JXD63B400 on hand as a dependable spare for quick replacements in critical distribution paths.\u003c\/li\u003e \u003cli\u003eDocument the part number (JXD63B400) in your asset registry to streamline future maintenance and audits.\u003c\/li\u003e \u003cli\u003eWhen ordering, double‑check the panel’s voltage and current requirements to ensure full compatibility with your installation.\u003c\/li\u003e \u003cli\u003eStore in a clean, dry environment to preserve contact integrity and performance over time.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eReady for reliable, precise protection in your Siemens‑designed electrical system? The JXD63B400 from AmpState delivers a straightforward, compatible solution for high‑demand panelboards and distribution applications. If you need help confirming fit or pairing with other components, send a message and our team will assist with compatibility checks and placement guidance.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"AmpState","offers":[{"title":"Default Title","offer_id":46410988912802,"sku":"JXD63B400","price":5597.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/siemens-jxd63b400-400a-3p-600v-circuit-breaker-ampstate-breakers-727.webp?v=1789000965","url":"https:\/\/www.ampstate.com\/products\/siemens-jxd63b400-400a-3p-600v-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}