{"product_id":"siemens-hhjd63b300l-circuit-breaker","title":"Siemens | HHJD63B300L | Circuit Breaker | 300A | 3-Pole","description":"\u003cdiv\u003e\n\u003cp\u003eThe Siemens HHJD63B300L circuit breaker is a purpose-built 300A, 3-pole unit designed for reliable performance in demanding electrical systems. This breaker is ideal for maintenance, retrofit, and replacement projects where exact specifications matter, delivering consistent protection for three‑phase circuits.\u003c\/p\u003e \u003ch2\u003eKey specifications\u003c\/h2\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eAmperage:\u003c\/strong\u003e 300 A\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePoles:\u003c\/strong\u003e 3-Pole (three‑phase)\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch2\u003eWhy choose the Siemens HHJD63B300L\u003c\/h2\u003e\n\u003cp\u003eWhat sets this model apart is its strict adherence to Siemens’ design standards, ensuring compatibility when matching components is critical. The HHJD63B300L is the definitive reference for identifying a correct fit in compatible panels, making it the smart choice for replacement or upgrade projects where you can't compromise on ratings or configuration.\u003c\/p\u003e \u003cp\u003eWith a focus on practical, real-world use, this breaker supports seamless maintenance and rapid retrofits in three‑phase electrical setups. Its solid, purpose-built construction is designed to withstand the rigors of industrial and commercial environments, helping you keep critical power distribution running smoothly.\u003c\/p\u003e \u003ch2\u003eIdeal use cases\u003c\/h2\u003e\n\u003cul\u003e \u003cli\u003eReplacing an old or failed breaker in Siemens panels that require a 300A, 3-pole unit\u003c\/li\u003e \u003cli\u003eRetrofit projects that upgrade to higher current capacity while preserving existing three‑phase layouts\u003c\/li\u003e \u003cli\u003eMaintenance cycles in commercial facilities and light industrial installations where precise matching is essential\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch2\u003eCompatibility and how to verify fit\u003c\/h2\u003e\n\u003cp\u003eFor the most reliable compatibility, reference the part number HHJD63B300L. Before ordering, confirm that your panel and service requirements align with 300A and 3‑pole configuration, and verify ratings against your installation’s specifications. The part number is the best reference to avoid misfits in critical powerDistribution.\u003c\/p\u003e \u003ch2\u003eInstallation and care tips\u003c\/h2\u003e\n\u003cul\u003e \u003cli\u003eEngage a qualified electrician for installation to ensure proper connection and safety compliance\u003c\/li\u003e \u003cli\u003eFollow manufacturer guidelines for mounting and any torque recommendations appropriate to your panel\u003c\/li\u003e \u003cli\u003eKeep a record of the part number HHJD63B300L for future maintenance and replacements to maintain consistent protection\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Siemens","offers":[{"title":"Default Title","offer_id":46427486814370,"sku":"HHJD63B300L","price":10051.0,"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-hhjd63b300l-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}