{"product_id":"square-d-qob3205237-circuit-breaker","title":"Square D | QOB3205237 | Circuit Breaker | 20A | 3-Pole | Bolt-On","description":"\u003cdiv\u003e\n\u003cp\u003eMeet the Square D QOB3205237 Circuit Breaker — a dedicated 20A, 3-pole bolt-on solution built for precise protection in 3-phase electrical systems. Designed for maintenance, retrofit, and replacement projects, this unit ensures you have the exact spec alignment you need when reliability matters most.\u003c\/p\u003e \u003ch3\u003eKey advantages that matter in the real world\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eThree-pole protection for full phase isolation\u003c\/strong\u003e — prevents partial protection by simultaneously disconnecting all three conductors, simplifying safe servicing of 3-phase equipment.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eBolt-On mounting for secure installation\u003c\/strong\u003e — engineered for stable seating in compatible enclosures, reducing movement and vibration over time.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eExact part reference for compatibility\u003c\/strong\u003e — part number QOB3205237 is the best reference to ensure a proper fit in Square D bolt-on panels.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eSpecifically rated for 20A circuits\u003c\/strong\u003e — ideal for protecting motors, compressors, and other 3-phase loads where a 20-amp limit is required.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eWhen to use this 3-pole bolt-on breaker\u003c\/h3\u003e\n\u003cp\u003eThis breaker is the go-to choice for:\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cem\u003eMaintenance and service\u003c\/em\u003e on Square D panels that accept bolt-on units, ensuring you have a reliable, like-for-like replacement.\u003c\/li\u003e \u003cli\u003e\n\u003cem\u003eRetrofit projects\u003c\/em\u003e where upgrading or expanding a 3-phase circuit demands an exact 20A, 3-pole protection device.\u003c\/li\u003e \u003cli\u003e\n\u003cem\u003eReplacement scenarios\u003c\/em\u003e where a failed breaker needs a precise match to existing panel architecture and wiring configuration.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eImportant compatibility notes\u003c\/h3\u003e\n\u003cp\u003eBefore ordering, confirm fit and ratings for your specific panel. The QOB3205237 is designed to align with Square D’s bolt-on QOB series, so using the exact part number is the best way to verify compatibility with your enclosure and trip characteristics.\u003c\/p\u003e \u003ch3\u003eWhat you’ll get and how it helps your system\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eReliable protection\u003c\/strong\u003e for 3-phase loads, helping prevent equipment damage from overcurrent and short circuits.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eClear, dependable replacement path\u003c\/strong\u003e for panels that require a 3-pole, 20A, bolt-on breaker—reducing downtime and guesswork during service.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eIntuitive fitment\u003c\/strong\u003e within appropriate Square D bolt-on panels, enabling straightforward installation for qualified electricians.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003ePractical tips for installation and lifecycle\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eWork with the main supply de-energized and follow all local electrical codes during replacement or retrofit.\u003c\/li\u003e \u003cli\u003eVerify that the panel accepts bolt-on breakers in the QOB family and that the 20A rating matches your circuit needs.\u003c\/li\u003e \u003cli\u003eKeep the part number \u003cstrong\u003eQOB3205237\u003c\/strong\u003e on hand as the primary reference for future maintenance or ordering identical replacements.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Square D","offers":[{"title":"Default Title","offer_id":46427457093794,"sku":"QOB3205237","price":510.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/square-d-qob3205237-circuit-breaker-20a-3-pole-bolt-178.webp?v=1789726035","url":"https:\/\/www.ampstate.com\/products\/square-d-qob3205237-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}