{"product_id":"siemens-lxd63b450-450a-480v-3-pole-bolt-on-circuit-breaker","title":"Siemens LXD63B450 - 450 A, 480 V, 3-Pole Bolt-On Circuit Breaker | AmpState","description":"\u003cdiv\u003e\n\u003cp\u003eMeet the Siemens LXD63B450 — a robust, high-capacity 3-pole bolt-on molded case circuit breaker designed to shield your panelboards and loadcenters from overcurrent and short-circuit events. Rated at 450A and 480V, this unit is purpose-built for demanding 3-phase environments where reliability matters as much as protection.\u003c\/p\u003e \u003ch2\u003ePrecision protection you can trust\u003c\/h2\u003e\n\u003cp\u003eEngineered with a thermal-magnetic trip unit, the LXD63B450 delivers stable, repeatable protection across a wide range of operating conditions. This means fewer nuisance trips during temp swings or startup surges, and a faster, more predictable response when faults occur. The result is safer equipment, reduced downtime, and peace of mind for both routine maintenance and emergency service scenarios.\u003c\/p\u003e \u003ch2\u003eKey differentiators that matter in the field\u003c\/h2\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eBolt-on mounting\u003c\/strong\u003e provides a secure, vibration-resistant connection to the bus, minimizing movement and maintaining alignment in busy electrical environments.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003e3-pole design\u003c\/strong\u003e is ideal for 3-phase systems, ensuring synchronized protection for all phases and balanced load distribution.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eHigh-capacity compatibility\u003c\/strong\u003e with 450A and 480V ratings supports high-load branch circuits typical in commercial and light industrial settings.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eOEM-friendly compatibility\u003c\/strong\u003e crafted to pair with matching Siemens OEM loadcenters and panelboards for straightforward upgrades, replacements, or retrofits.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch2\u003eWhere this breaker truly shines\u003c\/h2\u003e\n\u003cul\u003e \u003cli\u003eResidential projects that require robust 3-phase protection in subpanels or main distribution points.\u003c\/li\u003e \u003cli\u003eCommercial installations with equipment startups, such as HVAC systems, pumps, and large motors, where reliable trip performance protects both people and equipment.\u003c\/li\u003e \u003cli\u003eLight industrial environments needing a dependable bolt-on solution that minimizes downtime during maintenance or panelboard upgrades.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch2\u003eWhat you get with the LXD63B450\u003c\/h2\u003e\n\u003cul\u003e \u003cli\u003eSecure bolt-on mounting for a rigid, vibration-resistant bus connection that stays fastened through operational stresses.\u003c\/li\u003e \u003cli\u003eThermal-magnetic trip unit delivering precise, repeatable protection characteristics you can rely on day in and day out.\u003c\/li\u003e \u003cli\u003eCompatibility with Siemens OEM load centers and panelboards for cohesive system integration and simplified sourcing.\u003c\/li\u003e \u003cli\u003eClear, industry-standard specifications: 450A, 3-pole, 480V, molded case construction designed for durable performance in demanding environments.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch2\u003eTechnical snapshot\u003c\/h2\u003e\n\u003cul\u003e \u003cli\u003eManufacturer: Siemens\u003c\/li\u003e \u003cli\u003ePart Number: LXD63B450\u003c\/li\u003e \u003cli\u003eType: Thermal-magnetic molded case circuit breaker\u003c\/li\u003e \u003cli\u003eAmperage Rating: 450A\u003c\/li\u003e \u003cli\u003eVoltage Rating: 480V\u003c\/li\u003e \u003cli\u003eNumber of Poles: 3\u003c\/li\u003e \u003cli\u003eMounting Style: Bolt-on\u003c\/li\u003e \u003cli\u003eApplication: Branch circuit overcurrent and short-circuit protection\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eWhen reliability, precise protection, and compatibility with Siemens panel ecosystems matter most, the LXD63B450 stands out. It’s a purpose-built solution for high-demand panels and distribution setups where dependable performance and easy maintenance converge. Trust AmpState to provide genuine Siemens protection you can count on through every load, surge, and startup moment.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Amp State","offers":[{"title":"Default Title","offer_id":46355132154018,"sku":null,"price":710.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/siemens-lxd63b450-450-a-480-v-3-pole-bolt-on-circuit-breaker-118.webp?v=1788733808","url":"https:\/\/www.ampstate.com\/products\/siemens-lxd63b450-450a-480v-3-pole-bolt-on-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}