{"product_id":"siemens-jxd23b400l-circuit-breaker","title":"Siemens | JXD23B400L | Circuit Breaker | 400A | 3-Pole | 240V | Feed-Through","description":"\u003cdiv\u003e\n\u003cp\u003e\u003cstrong\u003eSiemens JXD23B400L\u003c\/strong\u003e is a rugged 400A, 3-pole feed-through circuit breaker designed for demanding electrical installations. With a 240V rating, this unit is purpose-built for maintenance, retrofit, and replacement projects where reliable isolation and easy wiring are essential.\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\u003cstrong amperage:\u003e 400 A\u003c\/strong\u003e\u003c\/li\u003e \u003cli\u003e\u003cstrong poles:\u003e 3-Pole\u003c\/strong\u003e\u003c\/li\u003e \u003cli\u003e\u003cstrong voltage:\u003e 240V\u003c\/strong\u003e\u003c\/li\u003e \u003cli\u003e\u003cstrong configuration:\u003e Feed-Through\u003c\/strong\u003e\u003c\/li\u003e \u003cli\u003e\u003cstrong reference:\u003e Part number JXD23B400L for compatibility\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eWhy engineers and electricians choose this Siemens breaker. The 3-pole, 240V configuration delivers simultaneous interruption across all phases, reducing fault risk in high-current panels. The feed-through design simplifies wiring runs, making retrofits and panel upgrades quicker and cleaner while preserving the integrity of the main assembly.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eIdeal use cases\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eMaintenance and service upgrades in commercial or industrial panels that require a precise 400A, 3-pole solution\u003c\/li\u003e \u003cli\u003eRetrofit projects where existing equipment relies on Siemens JXD-series compatibility\u003c\/li\u003e \u003cli\u003eReplacement of worn or outdated breakers in high-load 240V circuits\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003eCompatibility and ordering tips\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eConfirm fit and ratings before ordering. The part number JXD23B400L is the best reference for compatibility with your Siemens panel and existing gear. This ensures seamless integration with minimal reconfiguration and maintained electrical safety standards.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003ePractical considerations for installation and use\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eVerify panel labeling and service requirements match a 400A, 3-pole, 240V feed-through configuration\u003c\/li\u003e \u003cli\u003ePlan for proper clearance and handling during replacement to maintain safety margins\u003c\/li\u003e \u003cli\u003eEngage a licensed electrician to perform installation and testing to ensure correct operation and compliance\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eDesigned with reliability in mind, the Siemens JXD23B400L delivers robust protection for high-demand circuits while offering the wiring flexibility of a feed-through design. When you need a precise, upgrade-ready breaker that aligns with Siemens systems, this 400A, 3-pole, 240V solution is built to meet the challenge. \u003c\/p\u003e\n\u003c\/div\u003e","brand":"Siemens","offers":[{"title":"Default Title","offer_id":46425635684514,"sku":"JXD23B400L","price":2063.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/siemens-jxd23b400l-circuit-breaker-400a-3-pole-240v-feed-through-816.webp?v=1789434787","url":"https:\/\/www.ampstate.com\/products\/siemens-jxd23b400l-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}