{"product_id":"siemens-q24020nc","title":"Siemens Q24020NC 40A 4-Pole 240 V Circuit Breaker","description":"\u003cdiv\u003e\n\u003ch2\u003eSiemens Q24020NC 40A 4-Pole 240 V Circuit Breaker — Precision Protection for Demanding Setups\u003c\/h2\u003e\n\u003cp\u003eThe Siemens Q24020NC 40A 4-Pole 240 V Circuit Breaker is built to safeguard complex electrical installations with reliability and clarity. With a 40-amp rating and four poles, it delivers robust overcurrent protection across multi-wire and 240-volt circuits, helping to prevent damage to equipment and wiring while keeping service interruptions to a minimum.\u003c\/p\u003e \u003ch3\u003eKey specifications at a glance\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eCurrent rating:\u003c\/strong\u003e 40 A\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePoles:\u003c\/strong\u003e 4\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVoltage rating:\u003c\/strong\u003e 240 V\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePart number:\u003c\/strong\u003e Q24020NC\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Siemens\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eWhy this 4-pole 240 V breaker is a smart choice\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\u003cstrongenhanced protection for multi-wire circuits:\u003e Four poles allow simultaneous interruption of all conductors in complex, shared-neutral configurations, reducing the risk of backfeed and improving safety in mixed-load environments.\u003c\/strongenhanced\u003e\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePrecise thermal-magnetic trip mechanism:\u003c\/strong\u003e Combines fast short-circuit interruption with reliable overload detection, helping to prevent nuisance trips while delivering dependable protection when it matters most.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eDesigned for compatibility with Siemens panels and equipment:\u003c\/strong\u003e Seamless integration within Siemens protection schemes ensures consistent performance and easier diagnostics in service panels and load centers.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eDurable, field-ready construction:\u003c\/strong\u003e Built to withstand regular cycling and the demands of residential, commercial, or light industrial settings, keeping circuits safeguarded over time.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eIdeal use cases\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eProtection for 240 V circuits powering heavy-duty appliances or equipment in workshops, garages, or small businesses\u003c\/li\u003e \u003cli\u003eMulti-wire branch circuits requiring simultaneous disconnection of multiple conductors for safety and code compliance\u003c\/li\u003e \u003cli\u003e3-phase or multi-pole distribution configurations where reliable, uniform trip behavior is critical\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003ePractical tips for installation and optimization\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eVerify that your panel or load center is compatible with Siemens Q-series protection devices to ensure optimal fit and performance.\u003c\/li\u003e \u003cli\u003eMatch the breaker’s 40 A rating to the expected continuous load and the wiring gauge in the circuit to avoid nuisance trips while protecting conductors.\u003c\/li\u003e \u003cli\u003eWhen upgrading from a lower-rated or different-pole-count breaker, plan for full through-the-door labeling and circuit documentation to maintain clarity for future maintenance.\u003c\/li\u003e \u003cli\u003ePair this breaker with properly rated cables and protective devices upstream and downstream to create a balanced, safe electrical system.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eWith the Siemens Q24020NC 40A 4-Pole 240 V Circuit Breaker, you’re choosing a dependable, purpose-built protection device tailored for demanding 240 V applications. It’s not just about cutting power—it’s about preserving equipment, enhancing safety, and delivering peace of mind in every electrical installation.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Siemens","offers":[{"title":"Default Title","offer_id":46423374200994,"sku":"Q24020NC","price":510.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/master_generic_229276d9-908d-46df-93e5-6fe31866e0ff.png?v=1765492975","url":"https:\/\/www.ampstate.com\/products\/siemens-q24020nc","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}