{"product_id":"square-d-qo330swn-circuit-breaker","title":"Square D | QO330SWN | Circuit Breaker | 30A | 3-Pole | 240V | Plug-In","description":"\u003cdiv\u003e\n\u003cp\u003e\u003cstrong\u003eSquare D QO330SWN\u003c\/strong\u003e is a 30 amp, 3-pole, 240V plug-in circuit breaker designed for reliable protection in Square D panel systems. This unit shines in maintenance, retrofit, and replacement projects where precise specifications and a straightforward install matter, helping you keep critical circuits safely powered.\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eAmperage:\u003c\/strong\u003e 30A\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePoles:\u003c\/strong\u003e 3-Pole\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVoltage:\u003c\/strong\u003e 240V\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eMounting:\u003c\/strong\u003e Plug-In\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eReference:\u003c\/strong\u003e Part number QO330SWN for compatibility verification\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eWhy this matters in practice: the 3-pole, 240V configuration provides coordinated protection across all hot legs for multi-wire branch circuits and motor loads, reducing the risk of partial trips and wiring damage. The plug-in design enables faster, cleaner replacements in compatible Square D panels, minimizing downtime and simplifying service calls for electricians and maintenance teams.\u003c\/p\u003e \u003ch3\u003eIdeal applications\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eResidential and light commercial panel upgrades where a 30A, 240V circuit needs protection\u003c\/li\u003e \u003cli\u003eRetrofit of aging or worn-out breakers in existing Square D QO panel environments\u003c\/li\u003e \u003cli\u003eReplacement for circuits that require a precise 30A 3-pole solution to safeguard equipment and wiring\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003eImportant note:\u003c\/strong\u003e Before ordering, confirm fit and ratings. The part number QO330SWN is the best reference for compatibility with your Square D QO panel system to ensure a seamless plug-in installation.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Square D","offers":[{"title":"Default Title","offer_id":46425622577314,"sku":"QO330SWN","price":310.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/square-d-qo330swn-circuit-breaker-30a-3-pole-240v-plug-767.webp?v=1789432019","url":"https:\/\/www.ampstate.com\/products\/square-d-qo330swn-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}