{"product_id":"siemens-cqd345-45a-480v-3-pole-circuit-breaker","title":"Siemens CQD345 - 45 A, 480 V, 3-Pole Circuit Breaker | AmpState","description":"\u003cdiv\u003e\n\u003cp\u003eSiemens CQD345 is a 45A, 480V, 3-pole molded case circuit breaker designed to protect branch circuits in panelboards and load centers with reliability and space efficiency. Its compact footprint helps maximize panel fill while delivering dependable overcurrent protection for today’s distributed electrical systems.\u003c\/p\u003e \u003ch3\u003eWhy this breaker stands out\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eCompact molded-case design\u003c\/strong\u003e minimizes panel-space usage, making it ideal for crowded panels and retrofit installations.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eThermal-magnetic trip unit\u003c\/strong\u003e delivers stable, repeatable protection against overloads and short circuits, reducing nuisance trips and safeguarding connected equipment.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eSeamless compatibility\u003c\/strong\u003e with matching OEM loadcenters and panelboards, supporting clean, coordinated protection schemes and straightforward replacement.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVersatile applications\u003c\/strong\u003e suitable for residential, commercial, and light industrial environments, covering a wide range of distribution needs.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eTechnical specifications\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eManufacturer: Siemens\u003c\/li\u003e \u003cli\u003ePart Number: CQD345\u003c\/li\u003e \u003cli\u003eType: Thermal-magnetic molded case circuit breaker\u003c\/li\u003e \u003cli\u003eAmperage Rating: 45 A\u003c\/li\u003e \u003cli\u003eVoltage Rating: 480 V\u003c\/li\u003e \u003cli\u003eNumber of Poles: 3\u003c\/li\u003e \u003cli\u003eApplication: Branch circuit overcurrent and short-circuit protection\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eIdeal use cases\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eProtecting three-phase distribution in commercial or light industrial panelboards and load centers that operate at 480V\u003c\/li\u003e \u003cli\u003eRetrofit installations where a compact, reliable 3-pole breaker is required to maintain coordinated protection\u003c\/li\u003e \u003cli\u003eResidential, commercial, or light industrial setups needing robust branch-circuit protection without expanding panel depth\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eInstallation and practical considerations\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eDesigned to fit Siemens OEM panelboards and compatible load centers for straightforward installation and labeling\u003c\/li\u003e \u003cli\u003eProvides balanced three-phase protection, ensuring each phase receives consistent disconnection behavior during faults\u003c\/li\u003e \u003cli\u003eIdeal as a replacement in compatible panels to preserve UL listing and protective coordination\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eFor reliable 3-phase protection in a compact package, the Siemens CQD345 delivers precise, dependable performance at 45 A and 480 V, making it a practical choice for safeguarding circuits in modern panelboards and load centers.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Amp State","offers":[{"title":"Default Title","offer_id":46349783629986,"sku":null,"price":710.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/siemens-cqd345-45-a-480-v-3-pole-circuit-breaker-ampstate-breakers-871.webp?v=1788724322","url":"https:\/\/www.ampstate.com\/products\/siemens-cqd345-45a-480v-3-pole-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}