{"product_id":"siemens-cqd340-40a-480v-3-pole-circuit-breaker","title":"Siemens CQD340 - 40 A, 480 V, 3-Pole Circuit Breaker | AmpState","description":"\u003cdiv\u003e\n\u003cp\u003eSiemens CQD340—a 40A, 480V, 3-pole molded case circuit breaker designed for dependable branch circuit overcurrent and short-circuit protection in panelboards and load centers. Built to integrate seamlessly with matching OEM equipment, it delivers reliable performance where electrical distribution matters most.\u003c\/p\u003e \u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eCompact molded case design\u003c\/strong\u003e optimizes panel space, making it easier to fit multiple protection devices in tighter enclosures.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eThermal-magnetic trip unit\u003c\/strong\u003e provides stable, repeatable protection performance, balancing overload and short-circuit responses for consistent operation.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eOEM compatibility\u003c\/strong\u003e specifically designed to work with matching Siemens panelboards and load centers for a clean, code-compliant installation.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVersatile applications\u003c\/strong\u003e suitable for residential, commercial, and light industrial environments that require reliable 3-phase protection at 480V.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eIdeal Applications and Use Scenarios\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e feeders and branch circuits within Siemens panelboards and load centers\u003c\/li\u003e \u003cli\u003e3-phase circuits in commercial spaces such as small offices, retail, or service areas\u003c\/li\u003e \u003cli\u003eLight industrial electrical distributions where compact protection solutions are essential\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eTechnical snapshot\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eAmperage rating:\u003c\/strong\u003e 40A\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVoltage rating:\u003c\/strong\u003e 480V\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eNumber of poles:\u003c\/strong\u003e 3\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Thermal-magnetic molded case circuit breaker\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e Branch circuit overcurrent and short-circuit protection\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eChoosing the CQD340 means opting for a proven, space-efficient solution that aligns with Siemens’ panelboard ecosystems, delivering dependable protection for 3-phase distribution at 480V. Its compact form, precise protection, and OEM compatibility help minimize installation complexity and maintenance concerns, so you can count on consistent performance across critical electrical infrastructure.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Amp State","offers":[{"title":"Default Title","offer_id":46349783564450,"sku":null,"price":710.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/siemens-cqd340-40-a-480-v-3-pole-circuit-breaker-ampstate-breakers-408.webp?v=1788724312","url":"https:\/\/www.ampstate.com\/products\/siemens-cqd340-40a-480v-3-pole-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}