{"product_id":"siemens-hld63b450l-circuit-breaker","title":"Siemens | HLD63B450L | Circuit Breaker | 450A | 3-Pole | 600V","description":"\u003cdiv\u003e\n\u003cp\u003e\u003cstrong\u003eSiemens HLD63B450L\u003c\/strong\u003e is a rugged, 450A circuit breaker designed for demanding 3‑phase electrical systems up to 600V. Built for maintenance, retrofit, and replacement projects, this unit delivers reliable protection and a straightforward path to keeping critical power on line.\u003c\/p\u003e \u003ch3\u003eKey specifications at a glance\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eAmperage:\u003c\/strong\u003e 450A\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePole configuration:\u003c\/strong\u003e 3‑Pole\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVoltage rating:\u003c\/strong\u003e 600V\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePart reference:\u003c\/strong\u003e HLD63B450L — the best compatibility reference for matching equipment\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eWhy the HLD63B450L stands out\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\u003cstrongdirect compatibility\u003e with Siemens panels and gear, using the exact part number to ensure correct fit, trip characteristics, and electrical fit during service or upgrades.\u003c\/strongdirect\u003e\u003c\/li\u003e \u003cli\u003e\u003cstrongreliable protection for systems\u003e—the 3‑pole design ensures all active phases disconnect together, safeguarding motors, feeders, and downstream equipment in the event of a fault.\u003c\/strongreliable\u003e\u003c\/li\u003e \u003cli\u003e\u003cstrongindustrial-grade suitability\u003e for steady operation in maintenance cycles, retrofits, and replacement scenarios where downtime and compatibility matter most.\u003c\/strongindustrial-grade\u003e\u003c\/li\u003e \u003cli\u003e\u003cstrongclear ordering guidance\u003e with the part number as the primary reference, reducing the guesswork when sourcing replacements or performing panel upgrades.\u003c\/strongclear\u003e\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eIdeal use cases\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eReplacing a worn or failed breaker in a 3‑phase, 600V electrical distribution panel.\u003c\/li\u003e \u003cli\u003eRetrofits where you need to preserve the existing form factor and protective ratings while upgrading to a Siemens solution.\u003c\/li\u003e \u003cli\u003eMaintenance projects that require a precise, commensurate replacement to minimize panel downtime and reconfiguration effort.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eInstallation and care tips\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eVerify fit and ratings\u003c\/strong\u003e (matching amperage, voltage, and pole count) before ordering to avoid compatibility issues in the field.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eFollow safe shutdown protocols\u003c\/strong\u003e and use lockout\/tagout procedures during replacement and testing.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eConsult your panel’s documentation\u003c\/strong\u003e for recommended torque values, conductor sizing, and any panel-specific installation notes.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eDocument the part number\u003c\/strong\u003e (HLD63B450L) in your maintenance logs to streamline future service and ordering.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eCompatibility and ordering notes\u003c\/h3\u003e\n\u003cp\u003eWhen sourcing this Siemens circuit breaker, the \u003cstrong\u003eHLD63B450L\u003c\/strong\u003e part number is the most reliable reference for matching your equipment. Before finalizing purchase, confirm that the panel, wiring, and protection scheme align with a 450A, 3‑pole, 600V configuration to ensure seamless integration and safe operation.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Siemens","offers":[{"title":"Default Title","offer_id":46427484749986,"sku":"HLD63B450L","price":5601.0,"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-hld63b450l-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}