{"product_id":"siemens-jd63b400l-circuit-breaker","title":"Siemens | JD63B400L | Circuit Breaker | 400A | 3-Pole | 600V","description":"\u003cdiv\u003e\n\u003cp\u003eMeet the Siemens JD63B400L circuit breaker — a robust 400-amp, 3-pole protection solution designed for demanding 600-volt, three-phase systems. This unit is purpose-built for maintenance, retrofit, and replacement projects where exact specifications matter, delivering reliable protection that matches your existing Siemens hardware.\u003c\/p\u003e \u003cp\u003eWhy choose the JD63B400L? Because compatibility isn’t optional—it's essential. By matching the JD63B400L part number, you ensure precise fit, correct electrical ratings, and consistent trip behavior. In industrial settings where downtime is costly, having the right part on hand means faster service windows and safer, more predictable protection for your critical loads.\u003c\/p\u003e \u003ch3\u003eKey specifications\u003c\/h3\u003e\n\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\u003ePart number\u003c\/strong\u003e: JD63B400L\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eIdeal use scenarios\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eMaintenance and service replacements in existing Siemens panels that require a 400 A, 3-pole device\u003c\/li\u003e \u003cli\u003eRetrofit projects and panel upgrades where current protection needs to meet higher load demands\u003c\/li\u003e \u003cli\u003eNew installations in industrial environments with three-phase power up to 600 V\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eCompatibility and installation notes\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eNotes: Confirm fit and ratings before ordering. The part number is your best reference for compatibility to avoid mismatches in panel design or electrical characteristics.\u003c\/li\u003e \u003cli\u003eBefore you install, verify the panel’s bus arrangement and mounting style align with the JD63B400L specifications.\u003c\/li\u003e \u003cli\u003eEnsure wiring conductors, terminations, and torque settings meet your enclosure’s requirements and applicable electrical codes.\u003c\/li\u003e \u003cli\u003eInstallation should be performed by a qualified electrician to maintain safety and compliance.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eThe Siemens JD63B400L isn’t just a number on a page—it’s a precise, ready-to-install protection solution designed to keep industrial power systems running smoothly. With exact compatibility for Siemens-based configurations, you gain dependable performance, reduced maintenance downtime, and a clear path to continued protection of motors, drives, and other critical loads in your 3-phase network.\u003c\/p\u003e \u003ch3\u003eWhat makes it stand out\u003c\/h3\u003e\n\u003cp\u003eDistinctive value comes from exact part-number alignment, minimizing guesswork in inventory and service planning. This isn’t a generic replacement; it’s a specifically matched, 400 A, 3-pole, 600 V circuit breaker built to integrate seamlessly with Siemens systems and protect your investment over the long term.\u003c\/p\u003e \u003cp\u003eReady to secure your electrical system with the right fit? The Siemens JD63B400L is the precise choice for applications demanding reliable 400 A three-pole protection at 600 V, ensuring compatibility, safety, and performance across maintenance, retrofit, and replacement projects.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Siemens","offers":[{"title":"Default Title","offer_id":46425635750050,"sku":"JD63B400L","price":4679.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/master_generic_a085eff1-75dd-47ee-b131-4c8df8f0489b.png?v=1765492976","url":"https:\/\/www.ampstate.com\/products\/siemens-jd63b400l-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}