{"product_id":"siemens-qg320-20a-240v-3-pole-plug-in-circuit-breaker","title":"Siemens QG320 - 20 A, 240 V, 3-Pole Plug-In Circuit Breaker | AmpState","description":"\u003cdiv\u003e\n\u003cp\u003eMeet the Siemens QG320 — a dependable 3-pole plug-in molded case circuit breaker designed for reliable branch circuit overcurrent and short-circuit protection. With a compact, plug-in form factor, this breaker slides into compatible Siemens panelboards and loadcenters for fast, downtime-minimizing replacements.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eWhy the QG320 stands out\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eFast plug-in connection\u003c\/strong\u003e for quick installation and simple replacement, reducing panel downtime during maintenance or upgrades.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eThermal-magnetic trip unit\u003c\/strong\u003e delivers stable, repeatable protection performance, reacting to overloads thermally and short circuits magnetically for fast disconnection when needed.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eThree-pole design\u003c\/strong\u003e protects all three hot conductors in 240V systems, making it ideal for 3-phase or 240V applications in commercial and light industrial environments.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eOEM-compatible\u003c\/strong\u003e engineered to work with matching Siemens OEM load centers and panelboards, ensuring consistent protection and electrical compatibility.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVersatile application\u003c\/strong\u003e suitable for residential, commercial, and light industrial use, delivering dependable protection across a range of installations.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch2\u003eTechnical snapshot\u003c\/h2\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 QG320\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Thermal-magnetic molded case circuit breaker\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eAmperage rating:\u003c\/strong\u003e 20A\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVoltage rating:\u003c\/strong\u003e 240V\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePoles:\u003c\/strong\u003e 3\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eMounting style:\u003c\/strong\u003e Plug-in\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 \u003ch2\u003ePractical use cases\u003c\/h2\u003e\n\u003cp\u003e electricians and facility managers rely on the QG320 for quick, reliable protection in panelboards and loadcenters. Use it when you need to:\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eAdd or replace a 3-pole 20A 240V protection device in commercial or light-industrial panelboards.\u003c\/li\u003e \u003cli\u003eUpgrade 240V circuits that require robust short-circuit protection with a fast-responding thermal-magnetic trip.\u003c\/li\u003e \u003cli\u003eMaintain consistent protection across multiple hot legs in multi-wire branch circuits.\u003c\/li\u003e \u003cli\u003eEnsure compatibility with existing Siemens OEM panel infrastructure to preserve protection coordination and labeling.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch2\u003eInstallation and care tips\u003c\/h2\u003e\n\u003cul\u003e \u003cli\u003eVerify the panelboard or loadcenter specification to confirm compatibility with plug-in QG-series breakers before installation.\u003c\/li\u003e \u003cli\u003eHandle with standard electrical safety practices; install only on de-energized circuits and follow local electrical codes.\u003c\/li\u003e \u003cli\u003eWhen a 3-pole breaker trips, inspect the connected loads and conductors for faults to prevent nuisance trips and repeated outages.\u003c\/li\u003e \u003cli\u003eKeep spares on hand for rapid replacement in service panels to minimize downtime during maintenance windows.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eDesigned to deliver dependable protection with straightforward installation, the Siemens QG320 3-Pole 20A 240V plug-in breaker is a practical, long-lasting choice for safeguarding electrical distribution in homes, workplaces, and light industrial facilities. Its combination of fast plug-in mounting, precise thermal-magnetic trip, and OEM panel compatibility makes it a reliable foundation for safe, efficient electrical systems.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Amp State","offers":[{"title":"Default Title","offer_id":46355159679138,"sku":null,"price":710.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/siemens-qg320-20-a-240-v-3-pole-plug-in-circuit-breaker-ampstate-131.webp?v=1788736616","url":"https:\/\/www.ampstate.com\/products\/siemens-qg320-20a-240v-3-pole-plug-in-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}