{"product_id":"siemens-hlxd63b450-450a-600v-3-pole-bolt-on-circuit-breaker","title":"Siemens HLXD63B450 - 450 A, 600 V, 3-Pole Bolt-On Circuit Breaker | AmpState","description":"\u003cdiv\u003e\n\u003cp\u003eSiemens HLXD63B450 is a 450 A, 600 V, 3‑pole bolt‑on molded case circuit breaker designed to deliver dependable branch circuit overcurrent and short‑circuit protection in panelboards and loadcenters. Built for demanding environments, its bolt‑on mounting creates a rigid, vibration‑resistant connection to the bus, helping maintain consistent protection even in equipment with heavy mechanical vibration.\u003c\/p\u003e \u003cp\u003eThe thermal‑magnetic trip unit combines thermal (overload) and magnetic (short‑circuit) protections for stable, repeatable performance across varying loads and temperatures. That means fewer nuisance trips and more predictable operation when your system encounters surge events or motor start‑ups.\u003c\/p\u003e \u003ch3\u003eWhat makes HLXD63B450 stand out\u003c\/h3\u003e \u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSecure bolt‑on mounting\u003c\/strong\u003e provides a rigid, vibration‑resistant bus connection that stays locked in under heavy equipment loads.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThermal‑magnetic trip\u003c\/strong\u003e delivers coordinated protection for branch circuits with clear, repeatable trip curves.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e3‑pole design\u003c\/strong\u003e suits 3‑phase systems, ensuring synchronized disconnection across all phases.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e450 A \/ 600 V rating\u003c\/strong\u003e targets heavy‑duty panelboard and loadcenter protection while meeting standard electrical distribution requirements.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM compatibility\u003c\/strong\u003e is designed to work with matching Siemens panelboards and loadcenters for straightforward installation and reliable performance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVersatile applications\u003c\/strong\u003e suitable for residential, commercial, and light industrial environments where robust protection is essential.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eIdeal use scenarios\u003c\/h3\u003e \u003cul\u003e\n\u003cli\u003eProtect main feeders and branch circuits in three‑phase panelboards in commercial spaces, such as offices, retail, and small industrial facilities.\u003c\/li\u003e\n\u003cli\u003eReplace or retrofit in existing Siemens OEM panels to maintain system protection and compliance.\u003c\/li\u003e\n\u003cli\u003eUse as a dedicated service disconnect or as part of a distributed protection scheme in light industrial equipment racks and electrical rooms.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eTechnical snapshot\u003c\/h3\u003e \u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer:\u003c\/strong\u003e Siemens\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart number:\u003c\/strong\u003e HLXD63B450\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Thermal‑magnetic molded case circuit breaker\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAmperage rating:\u003c\/strong\u003e 450 A\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVoltage rating:\u003c\/strong\u003e 600 V\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePoles:\u003c\/strong\u003e 3\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMounting style:\u003c\/strong\u003e Bolt‑on\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e Branch circuit overcurrent and short‑circuit protection\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eInstallation and maintenance tips: Use the appropriate torque on mounting hardware as specified by Siemens for bolt‑on breakers, and pair this unit with compatible OEM loadcenters to ensure the protection curve remains aligned with your system's design. Regular inspection of bus connections and verifying trip unit calibration when applicable will help sustain reliable performance over the life of the installation.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Amp State","offers":[{"title":"Default Title","offer_id":46349812007074,"sku":null,"price":710.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/siemens-hlxd63b450-450-a-600-v-3-pole-bolt-on-circuit-breaker-617.webp?v=1788731659","url":"https:\/\/www.ampstate.com\/products\/siemens-hlxd63b450-450a-600v-3-pole-bolt-on-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}