{"product_id":"siemens-jxd63m400l-circuit-breaker","title":"Siemens | JXD63M400L | Circuit Breaker | 400A | 3-Pole | 600V","description":"\u003cdiv\u003eSiemens JXD63M400L Circuit Breaker delivers dependable protection for 3-phase power systems in industrial and commercial environments. With a 400A rating, three poles, and a 600V operating capability, this device is built to safeguard feeders, panelboards, and downstream equipment during faults or overloads. \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eAmperage:\u003c\/strong\u003e 400 A\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePoles:\u003c\/strong\u003e 3-Pole\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVoltage:\u003c\/strong\u003e 600 V\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eReference:\u003c\/strong\u003e Part number JXD63M400L\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eNotes: Confirm fit and ratings before ordering. The part number is the best reference for compatibility with your panel or distribution equipment.\u003c\/p\u003e \u003cp\u003eWho this is for: maintenance teams, retrofit projects, and spare-parts inventories that require Siemens-compatible protection solutions. This breaker is a reliable choice for updating aging panels or integrating into new installations that demand a robust 3-phase, 600V protection strategy.\u003c\/p\u003e \u003cp\u003eWhy it matters in real-world use:\n\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003ePrecise compatibility with Siemens catalog reference JXD63M400L ensures you’re pairing the right device with your existing panel lineup, reducing downtime and mismatches.\u003c\/li\u003e \u003cli\u003e400A capacity supports substantial load currents in commercial and light-industrial applications, providing solid protection for feeders and critical circuits.\u003c\/li\u003e \u003cli\u003eThree-pole configuration simplifies 3-phase protection in one compact unit, helping to streamline panel layouts and maintenance routines.\u003c\/li\u003e \u003cli\u003eUsing a Siemens part enables consistent performance with other Siemens protection devices, simplifying sourcing and warranty considerations across your electrical system.\u003c\/li\u003e\n\u003c\/ul\u003e\n \u003cp\u003ePractical use scenarios:\n\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eReplacing a failed or worn-out circuit breaker in a 3-phase 600V distribution panel.\u003c\/li\u003e \u003cli\u003eRetrofit projects where your system requires a 400A, 3-pole protection device with matching specs.\u003c\/li\u003e \u003cli\u003eSpare-part stocking for planned maintenance programs in facilities with Siemens-installed electrical infrastructure.\u003c\/li\u003e\n\u003c\/ul\u003e\n \u003cp\u003eInstallation and care tips:\n\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eVerify that the panel’s catalog number and bus configuration align with the JXD63M400L specifications before installation.\u003c\/li\u003e \u003cli\u003eHandle with appropriate electrical safety precautions and follow local codes during replacement or retrofit work.\u003c\/li\u003e \u003cli\u003eStore replacements in their original packaging until ready to install to preserve internal components.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Siemens","offers":[{"title":"Default Title","offer_id":46427480457378,"sku":"JXD63M400L","price":24288.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/siemens-jxd63m400l-circuit-breaker-400a-3-pole-600v-379.webp?v=1789728974","url":"https:\/\/www.ampstate.com\/products\/siemens-jxd63m400l-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}