{"product_id":"siemens-hhld63b350l-circuit-breaker","title":"Siemens | HHLD63B350L | Circuit Breaker | 350A | 3-Pole | 600V","description":"\u003cdiv\u003e\n\u003cp\u003eThe Siemens HHLD63B350L circuit breaker is a rugged, high‑current protection device designed for industrial and commercial electrical systems. With a 350A rating, 3 poles, and a 600V operation, it delivers reliable, coordinated protection for three‑phase circuits in maintenance, retrofit, and replacement projects. Built to integrate with Siemens gear, this breaker helps keep critical equipment safeguarded and downtime to a minimum when faults occur.\u003c\/p\u003e \u003ch3\u003eKey specifications\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eAmperage:\u003c\/strong\u003e 350 A\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePoles:\u003c\/strong\u003e 3-Pole\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVoltage rating:\u003c\/strong\u003e 600 V\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePart number:\u003c\/strong\u003e HHLD63B350L\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eCompatibility note:\u003c\/strong\u003e The part number is the best reference for compatibility; confirm fit and ratings before ordering.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eWhy this breaker stands out\u003c\/h3\u003e\n\u003cp\u003eCompared to generic substitutes, the HHLD63B350L is purpose-built to match Siemens panelboards and distribution equipment, ensuring seamless integration and predictable protection behavior in demanding environments. Its 3‑pole design supports true three‑phase protection, reducing the risk of phase imbalances and enabling safe, simultaneous disconnection of all live lines during a fault. This makes it an ideal choice for feeders powering motors, transformers, and other heavy loads in industrial facilities.\u003c\/p\u003e \u003ch3\u003eIdeal use cases\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eMaintenance and repair projects where a direct spec match is required for retrofitting existing Siemens systems.\u003c\/li\u003e \u003cli\u003eRetrofits in facilities upgrading electrical infrastructure to handle higher current demands.\u003c\/li\u003e \u003cli\u003eReplacement of aging or failed breakers in 600V, three-phase distribution networks.\u003c\/li\u003e \u003cli\u003eNew installations in panels that require a 350A, 3‑pole, 600V protection device with Siemens compatibility.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eInstallation and compatibility tips\u003c\/h3\u003e\n\u003cp\u003eTo ensure a precise fit, rely on the part number HHLD63B350L as your primary compatibility reference. Before purchasing, verify that the panel enclosure, busbar arrangement, and mounting style align with this breaker’s specifications. For best results, compare your system’s documented ratings with the 350A, 3‑pole, 600V profile to prevent mismatches and ensure compliant, safe operation.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e Confirm fit and ratings before ordering. The part number is the best reference for compatibility.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Siemens","offers":[{"title":"Default Title","offer_id":46427486421154,"sku":"HHLD63B350L","price":19062.0,"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-hhld63b350l-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}