{"product_id":"siemens-hfk3b250-250a-3p-480v-circuit-breaker","title":"Siemens HFK3B250 Circuit Breaker, 250A, 3-Pole, 480V","description":"\u003cdiv\u003e\n\u003cp\u003eEngineered for rugged industrial power systems, the Siemens HFK3B250 Circuit Breaker delivers reliable overcurrent protection for 480V three-phase networks. Rated for 250 A and configured as a 3-pole device, this breaker is built to guard motors, feeders, and distribution panels in demanding environments.\u003c\/p\u003e \u003ch3\u003eKey specifications\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eManufacturer:\u003c\/strong\u003e Siemens\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e HFK3B250\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Circuit Breaker\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eAmperage:\u003c\/strong\u003e 250 A\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePoles:\u003c\/strong\u003e 3\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVoltage:\u003c\/strong\u003e 480 V\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eWhy this 3-pole, 480V breaker is a smart fit\u003c\/h3\u003e\n\u003cp\u003eIn three-phase industrial power systems, a 3-pole breaker like the HFK3B250 provides synchronized protection across all live legs, preventing phase-to-phase faults from affecting equipment and personnel. Its 480V rating makes it suitable for distribution panels, motor control centers, and line-side protection in facilities that rely on high-efficiency three-phase power.\u003c\/p\u003e \u003ch3\u003eIdeal use cases\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eNew installations requiring robust 250 A protection for 3-phase 480 V feeders\u003c\/li\u003e \u003cli\u003ePanel replacement projects where compatibility with Siemens breakers is important\u003c\/li\u003e \u003cli\u003eMaintenance shut-downs and service upgrades on manufacturing lines, HVAC systems, and heavy machinery\u003c\/li\u003e \u003cli\u003eEmergency protection upgrades in warehouses and distribution centers with 480 V power\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eWhat makes it stand out\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003ePart-number verified compatibility: HFK3B250 is the definitive reference for fitment in compatible Siemens panels and application requirements\u003c\/li\u003e \u003cli\u003eClear, quick-tripping for safe fault clearance across all three phases\u003c\/li\u003e \u003cli\u003eDesigned for industrial duty with reliable performance in variable loads and frequent cycling\u003c\/li\u003e \u003cli\u003eStreamlined maintenance: standardization across your fleet simplifies stocking and service\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eCompatibility and quick confirmation\u003c\/h3\u003e\n\u003cp\u003eTo ensure a flawless fit, verify the part number—HFK3B250—and review your application requirements. If you need a hand confirming compatibility with your panel model or distribution setup, send us a message and we’ll help determine the right fit for your 480V, 3-phase system.\u003c\/p\u003e \u003ch3\u003eInstallation and safety reminders\u003c\/h3\u003e\n\u003cp\u003eDisconnect power before servicing, follow Siemens installation instructions, and use appropriate PPE. Ensure proper torque on terminals and respect enclosure clearances to maintain safe, reliable operation.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"AmpState","offers":[{"title":"Default Title","offer_id":46415763046562,"sku":"HFK3B250","price":106695.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/master_generic_513d6710-3734-4b27-839d-f68e6f4b470a.png?v=1765492974","url":"https:\/\/www.ampstate.com\/products\/siemens-hfk3b250-250a-3p-480v-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}