{"product_id":"siemens-jd63b400hl-circuit-breaker","title":"Siemens | JD63B400HL | Circuit Breaker | 400A | 3-Pole | 600V","description":"\u003cdiv\u003e\n\u003cp\u003eSiemens JD63B400HL Circuit Breaker is a robust protection device designed for demanding three-phase electrical systems. With a \u003cstrong\u003e400A\u003c\/strong\u003e rating, \u003cstrong\u003e3-pole\u003c\/strong\u003e configuration, and a \u003cstrong\u003e600V\u003c\/strong\u003e operating capability, it delivers reliable protection during maintenance, retrofit, or replacement projects where exact specifications matter.\u003c\/p\u003e \u003ch2\u003eKey specifications\u003c\/h2\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eAmperage:\u003c\/strong\u003e 400A\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePoles:\u003c\/strong\u003e 3-Pole\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVoltage:\u003c\/strong\u003e 600V\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePart number:\u003c\/strong\u003e JD63B400HL\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch2\u003eWhy choose this Siemens JD63B400HL breaker?\u003c\/h2\u003e\n\u003cul\u003e \u003cli\u003eDesigned for high-demand three-phase circuits, providing reliable protection for commercial and industrial panel boards.\u003c\/li\u003e \u003cli\u003eExact specifications are matched by the JD63B400HL, making it a precise replacement or retrofit option for compatible systems.\u003c\/li\u003e \u003cli\u003eThe part-number accuracy (JD63B400HL) simplifies compatibility checks and sourcing, reducing guesswork during maintenance or upgrades.\u003c\/li\u003e \u003cli\u003eIdeal for retrofit projects where a direct, drop-in alternative is required to restore uninterrupted power distribution.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch2\u003eFit, compatibility and installation tips\u003c\/h2\u003e\n\u003cp\u003eNotes: Confirm fit and ratings before ordering. Part number is the best reference for compatibility.\u003c\/p\u003e \u003ch2\u003eIdeal use cases\u003c\/h2\u003e\n\u003cul\u003e \u003cli\u003eMaintenance and service work on three-phase power distribution panels that accept JD63B400HL breakers.\u003c\/li\u003e \u003cli\u003eRetrofit of aging systems in industrial facilities where higher-current protection is needed without changing panel architecture.\u003c\/li\u003e \u003cli\u003eReplacement for failed or degraded breakers in scenarios demanding a 400A, 3-pole, 600V specification.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch2\u003eWhat you can expect in practice\u003c\/h2\u003e\n\u003cp\u003eWhen installed in the right, compatible panel, the Siemens JD63B400HL offers dependable protection for three-phase feeders, helping to prevent equipment damage and unplanned downtime. By using the exact JD63B400HL part number as your reference, you simplify ordering and ensure you’re selecting a breaker that aligns with your system’s electrical design and safety requirements. This is a targeted solution for professionals managing industrial power distribution who need a precise, reliable replacement or retrofit option without compromising performance.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Siemens","offers":[{"title":"Default Title","offer_id":46427067023522,"sku":"JD63B400HL","price":510.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/siemens-jd63b400hl-circuit-breaker-400a-3-pole-600v-408.webp?v=1789666732","url":"https:\/\/www.ampstate.com\/products\/siemens-jd63b400hl-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}