{"product_id":"siemens-bqd390-90a-3p-480v-circuit-breaker","title":"Siemens BQD390 90A 3P 480V Circuit Breaker, Bolt-On | AmpState","description":"\u003cdiv\u003e\n\u003cp\u003eThe Siemens \u003cstrong\u003eBQD390\u003c\/strong\u003e is a rugged 90 A, 3-pole \u003cem\u003ebolt-on\u003c\/em\u003e circuit breaker designed for dependable overcurrent protection in panelboards, load centers, and electrical distribution systems. With a 480 V rating, it powers robust three-phase applications while keeping critical equipment safeguarded.\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003ePart number\u003c\/strong\u003e: BQD390 — \u003cstrong\u003eManufacturer\u003c\/strong\u003e: Siemens\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eAmperage\u003c\/strong\u003e: 90 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 \u003cli\u003e\n\u003cstrong\u003eMounting\u003c\/strong\u003e: Bolt-On for quick, secure installation\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eIntended use\u003c\/strong\u003e: Circuit protection in panelboards, load centers, and electrical distribution\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eWhy this BQD390 stands out: it’s a precise, direct-part-number match for Siemens installations, reducing sourcing guesswork and inventory complexity. The bolt-on mounting streamlines retrofits and field replacements, helping maintenance teams minimize downtime when a three-phase, 480 V circuit needs reliable protection.\u003c\/p\u003e \u003cp\u003eIdeal for:\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eMaintenance teams maintaining industrial control panels and distribution boards\u003c\/li\u003e \u003cli\u003ePanel builders stocking reliable Siemens components for fast builds\u003c\/li\u003e \u003cli\u003eFacilities managing spare breakers for critical 3-phase circuits\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eHow it solves real problems:\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eExact compatibility with Siemens panelboards, ensuring a clean fit and proper protection without improvisation\u003c\/li\u003e \u003cli\u003eFast installation through bolt-on mounting, which reduces commissioning time in the field\u003c\/li\u003e \u003cli\u003eConsistent, dependable 90 A protection for three-phase circuits in 480 V systems\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eAmpState makes this Siemens BQD390 available for quick procurement. If you’re unsure about fit or compatibility with your specific panel or distribution setup, \u003cstrong\u003esend us a message\u003c\/strong\u003e and we’ll help confirm the correct match.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"AmpState","offers":[{"title":"Default Title","offer_id":46410890641570,"sku":"BQD390","price":751.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/master_generic_83963f7f-600e-419f-90c6-e7677089642b.png?v=1765492973","url":"https:\/\/www.ampstate.com\/products\/siemens-bqd390-90a-3p-480v-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}