{"product_id":"siemens-jxd63b400-400a-600v-3-pole-bolt-on-circuit-breaker","title":"Siemens JXD63B400 - 400 A, 600 V, 3-Pole Bolt-On Circuit Breaker | AmpState","description":"\u003cdiv\u003eSiemens JXD63B400 raises the bar for reliable, high-current protection in electrical panels. This 400 A, 600 V, 3-pole bolt-on molded case circuit breaker is built to safeguard branch circuits and prevent costly downtime in panelboards and load centers. With a rugged bolt-on mounting and a precise thermal-magnetic trip unit, it delivers consistent protection even in environments subject to vibration and electrical noise. \u003ch3\u003eKey features that differentiate this breaker\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eSecure bolt-on mounting\u003c\/strong\u003e for a rigid, vibration-resistant bus connection that stays put even in demanding installations.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eThermal-magnetic trip unit\u003c\/strong\u003e provides stable, repeatable protection by combining thermal overload sensing with magnetic short-circuit interruption.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eOEM-ready compatibility\u003c\/strong\u003e designed to fit Siemens OEM panelboards and loadcenters for reliable alignment and trip coordination.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eHigh-current capability\u003c\/strong\u003e 400 A at 600 V, ideal for main feeders and heavy-load branches in commercial and light industrial settings.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVersatile application\u003c\/strong\u003e suitable for residential, commercial, and light industrial applications that demand robust branch-circuit protection.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eTechnical specifications at a glance\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eManufacturer: Siemens\u003c\/li\u003e \u003cli\u003ePart Number: JXD63B400\u003c\/li\u003e \u003cli\u003eType: Thermal-magnetic molded case circuit breaker\u003c\/li\u003e \u003cli\u003eAmperage Rating: 400 A\u003c\/li\u003e \u003cli\u003eVoltage Rating: 600 V\u003c\/li\u003e \u003cli\u003eNumber of Poles: 3\u003c\/li\u003e \u003cli\u003eMounting Style: Bolt-on\u003c\/li\u003e \u003cli\u003eApplication: Branch circuit overcurrent and short-circuit protection\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003ePractical applications and use cases\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eMain feeders in commercial panelboards where a high-current, reliable main protection is required.\u003c\/li\u003e \u003cli\u003eDistribution panels in light industrial facilities that need dependable 3-pole protection for three-phase circuits.\u003c\/li\u003e \u003cli\u003eRetrofits or replacements in Siemens-compatible panelboards where bolt-on breakers are specified.\u003c\/li\u003e \u003cli\u003eSituations demanding a vibration-resistant connection in environments with motor loads or equipment that generate periodic shock.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eWhy choose the JXD63B400 for your panel\u003c\/h3\u003e\n\u003cp\u003eChoosing this Siemens breaker means investing in a unit designed to maintain consistent protection performance under real-world conditions. The combination of bolt-on mounting, a thermal-magnetic trip, and OEM compatibility translates to fewer field adjustments, clearer trip curves, and smoother integration with your existing Siemens panel infrastructure. It’s a purpose-built solution for spaces where reliability and alignment with factory specifications matter most.\u003c\/p\u003e \u003cp\u003eTechnical reliability, precise protection, and seamless panel compatibility come together in the Siemens JXD63B400. Part Number JXD63B400. If your project calls for a 3-pole, 400 A, 600 V bolt-on molded case circuit breaker designed for sturdy panel connections and consistent trip behavior, this unit is engineered to meet those needs you can count on day after day.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Amp State","offers":[{"title":"Default Title","offer_id":46349817282722,"sku":null,"price":710.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/siemens-jxd63b400-400-a-600-v-3-pole-bolt-on-circuit-breaker-178.webp?v=1788733096","url":"https:\/\/www.ampstate.com\/products\/siemens-jxd63b400-400a-600v-3-pole-bolt-on-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}