{"product_id":"siemens-jd3b400-circuit-breaker","title":"Siemens | JD3B400 | Circuit Breaker | 3-Pole","description":"\u003cdiv\u003e\n\u003cp\u003eIntroducing the Siemens JD3B400 Circuit Breaker, a reliable 3-Pole solution designed for maintenance, retrofit, and replacement projects where matching specifications matter. This item is identified by the JD3B400 part number, making compatibility checks straightforward and precise within Siemens systems.\u003c\/p\u003e \u003ch3\u003eWhy the Siemens JD3B400 3-Pole breaker stands out\u003c\/h3\u003e\n\u003cp\u003eWith its three-pole configuration, this breaker delivers coordinated protection for 3-phase electrical networks, helping keep sensitive equipment safe during startups, load changes, and routine operations. The JD3B400 model is specifically chosen when you require a Siemens-approved component that aligns with your existing panel architecture and accessories.\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eThree-pole design\u003c\/strong\u003e supports 3-phase circuits, ensuring balanced protection across all phases.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePart number JD3B400\u003c\/strong\u003e serves as the most reliable reference for compatibility—verify fit and ratings before ordering.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eMaintenance, retrofit, and replacement\u003c\/strong\u003e oriented—optimized for field service and equipment upgrades within Siemens-compatible systems.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eClear guidance on compatibility\u003c\/strong\u003e relies on the exact part number to align with your current panels and assemblies.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch4\u003eIdeal use cases\u003c\/h4\u003e\n\u003cp\u003eThis 3-Pole circuit breaker is an excellent choice for projects that require matching Siemens specifications, such as replacing a worn or failed unit, updating an electrical panel during a retrofit, or maintaining service reliability during routine maintenance. It’s well-suited for environments where precise part compatibility with existing Siemens equipment is essential.\u003c\/p\u003e \u003ch4\u003eProcurement notes\u003c\/h4\u003e\n\u003cp\u003eBefore placing an order, confirm the fit and ratings for your specific panel or distribution setup. Rely on the JD3B400 part number as the definitive reference to ensure seamless compatibility with your Siemens system.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Siemens","offers":[{"title":"Default Title","offer_id":46425644204194,"sku":"JD3B400","price":310.0,"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-jd3b400-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}