{"product_id":"siemens-hjxd63m300-circuit-breaker","title":"Siemens | HJXD63M300 | Circuit Breaker | 3-Pole","description":"\u003cdiv\u003e\n\u003cp\u003e\u003cstrong\u003eSiemens HJXD63M300\u003c\/strong\u003e is a 3-pole circuit breaker built for dependable protection in maintenance, retrofit, and replacement projects where exact specifications matter. This model is identified by the part number HJXD63M300, making compatibility straightforward and reducing the guesswork in sourcing spare parts.\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eThree-pole configuration\u003c\/strong\u003e supports coordinated interruption across all three phases in 3‑phase systems, helping maintain balanced protection and reducing the risk of partial outages.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eExact part-number compatibility\u003c\/strong\u003e ensures the electrical characteristics, footprint, and fit align with your existing Siemens panel or breaker kit.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eIdeal for maintenance, retrofit, and replacement\u003c\/strong\u003e when you need a like-for-like substitute that matches the original specifications.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eTrusted Siemens build\u003c\/strong\u003e with the reliability you expect from the Siemens family of electrical protective devices.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003eImportant considerations before ordering\u003c\/strong\u003e: Always confirm the breaker’s fit and ratings for your specific panel and system. The part number is the best reference for compatibility, and using HJXD63M300 helps ensure safe, code-compliant operation.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eTypical use scenarios\u003c\/strong\u003e:\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eMaintenance in existing Siemens panels that require a direct replacement\u003c\/li\u003e \u003cli\u003eRetrofit projects upgrading to a matching Siemens 3-pole breaker\u003c\/li\u003e \u003cli\u003eSpare parts strategy to minimize downtime during servicing\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003ePractical tips for a smooth installation\u003c\/strong\u003e:\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eHave your panel model and bus configuration on hand to verify compatibility with HJXD63M300.\u003c\/li\u003e \u003cli\u003eDouble-check the system’s current and trip characteristics match your project requirements.\u003c\/li\u003e \u003cli\u003eStore replacement breakers in anti-static packaging and follow proper safety procedures during installation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Siemens","offers":[{"title":"Default Title","offer_id":46427485405346,"sku":"HJXD63M300","price":39810.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/master_generic_ad06fdd7-931c-4a09-bfbe-d05329579cd6.png?v=1765492978","url":"https:\/\/www.ampstate.com\/products\/siemens-hjxd63m300-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}