{"product_id":"siemens-nxd63b900h-circuit-breaker","title":"Siemens | NXD63B900H | Circuit Breaker | 900A | 3-Pole | 600V","description":"\u003cdiv\u003e\n\u003cp\u003eSiemens NXD63B900H Circuit Breaker is a heavy-duty 900-amp, 3-pole device designed for 600-volt three-phase systems. Built for maintenance, retrofit, and replacement tasks, this breaker delivers reliable overcurrent protection where exact specifications matter most.\u003c\/p\u003e \u003ch3\u003eKey specifications\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eAmperage:\u003c\/strong\u003e 900 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 reference:\u003c\/strong\u003e NXD63B900H (best reference for compatibility)\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eWhy this model stands out\u003c\/h3\u003e\n\u003cp\u003eWhen maintaining or upgrading Siemens installations, the NXD63B900H provides direct compatibility with panels that require a 900 A, 3-pole, 600 V protection solution. Its 3-pole configuration is ideal for balanced protection across all three phases, ensuring synchronized isolation of all conductors to safeguard equipment and prevent partial faults. This makes it particularly well-suited for high-current applications like large motor drives, manufacturing lines, and robust distribution feeders.\u003c\/p\u003e \u003ch3\u003eUse cases\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eRetrofit aging Siemens panels to restore full protective capabilities with a 900 A, 3-pole unit.\u003c\/li\u003e \u003cli\u003eReplace a failed or aging breaker in a 3-phase, 600 V distribution system to maintain system integrity.\u003c\/li\u003e \u003cli\u003eServe as the main or feeder protection in large industrial installations that demand dependable, high-current interruption.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003eImportant compatibility note:\u003c\/strong\u003e Confirm fit and ratings before ordering. The part number NXD63B900H is the most reliable reference for ensuring a correct match with your equipment.\u003c\/p\u003e \u003ch3\u003eInstallation and safety considerations\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eEngage a qualified electrician and follow all applicable electrical codes and safety procedures.\u003c\/li\u003e \u003cli\u003eEnsure the system is fully de-energized before inspecting or replacing the breaker.\u003c\/li\u003e \u003cli\u003eVerify bus bar type and enclosure compatibility, and use the appropriate mounting arrangement for a 3-pole device.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Siemens","offers":[{"title":"Default Title","offer_id":46426302316706,"sku":"NXD63B900H","price":284018.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/master_generic_a085eff1-75dd-47ee-b131-4c8df8f0489b.png?v=1765492976","url":"https:\/\/www.ampstate.com\/products\/siemens-nxd63b900h-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}