{"product_id":"siemens-cj3s400-circuit-breaker","title":"Siemens | CJ3S400 | Circuit Breaker | 3-Pole | Bolt-On","description":"\u003cdiv\u003e\n\u003cp\u003eMeet Siemens CJ3S400, a robust 3-pole bolt-on circuit breaker designed for reliable protection in industrial electrical systems. Built for maintenance, retrofit, and replacement projects where exact compatibility matters, this unit helps keep panels safe, compliant, and operating with minimal downtime.\u003c\/p\u003e \u003ch3\u003eWhat makes it stand out\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003e3-Pole bolt-on configuration\u003c\/strong\u003e for secure mounting and true three-phase protection within panel assemblies and distribution boards.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePrecise compatibility via part number CJ3S400\u003c\/strong\u003e—the most dependable reference when matching breakers in Siemens installations or systems that require exact Siemens specifications.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePractical for multiple scenarios\u003c\/strong\u003e including routine maintenance, panel retrofits, and replacement of aging breakers without changing wiring layouts.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eImportant compatibility note\u003c\/strong\u003e Always confirm fit and ratings before ordering to ensure electrical characteristics and mounting footprint align with your equipment.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eIdeal for\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eFacilities engineers and maintenance teams managing industrial panels that rely on Siemens protection devices.\u003c\/li\u003e \u003cli\u003eProject teams performing retrofits or stocking spare parts for ongoing operations.\u003c\/li\u003e \u003cli\u003eTechnicians seeking a dependable, three-phase bolt-on solution that aligns with existing CJ-series or Siemens-compatible systems.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eHow this model helps in practice\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eUsing the CJ3S400 as the reference minimizes installation guesswork, reducing downtime caused by incompatible replacements.\u003c\/li\u003e \u003cli\u003eThe bolt-on design provides a solid mechanical connection, aiding reliable operation in environments with vibration and constant switching.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003eKey reminder\u003c\/strong\u003e: The CJ3S400 part number is your best reference for compatibility. Before ordering, verify that the breaker's ratings and mounting footprint match your panel requirements and that the three poles align with your three-phase circuit.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Siemens","offers":[{"title":"Default Title","offer_id":46427179286690,"sku":"CJ3S400","price":510.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/master_generic_a0994f42-7fad-49d1-911a-c2784022b8c9.png?v=1765492979","url":"https:\/\/www.ampstate.com\/products\/siemens-cj3s400-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}