{"product_id":"square-d-qo3501021-miniature-circuit-breaker-50a-3-pole-240v-plug-in-shunt-trip-qo-series","title":"Square D QO3501021 Miniature Circuit Breaker – 50A – 3 Pole – 240V – Plug-In – Shunt Trip – QO Series","description":"\u003cp\u003eThe Square D QO3501021 is a QO-series three-pole miniature circuit breaker designed for overcurrent protection and remote tripping capability in residential, commercial, and light industrial 240VAC systems. It provides thermal magnetic protection along with an integrated AC shunt trip function (120\/208\/240VAC), allowing remote disconnection when required. This breaker is compatible with QO load centers, NQ panelboards, and OEM distribution systems.\u003c\/p\u003e\n\u003ch2\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eElectrical Ratings\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eCurrent Rating: 50 A\u003c\/li\u003e\n\u003cli\u003eVoltage Rating: 240 VAC\u003c\/li\u003e\n\u003cli\u003eFrequency: 50\/60 Hz\u003c\/li\u003e\n\u003cli\u003ePhase: 3 Phase\u003c\/li\u003e\n\u003cli\u003ePoles: 3 Pole\u003c\/li\u003e\n\u003cli\u003eInterrupting Rating: 10 kA @ 240 VAC\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eProtection and Function\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eTrip Technology: Thermal Magnetic\u003c\/li\u003e\n\u003cli\u003eTrip Function: Common Trip (Overload + Short-Circuit Protection)\u003c\/li\u003e\n\u003cli\u003eProtection Type: Branch circuit protection\u003c\/li\u003e\n\u003cli\u003eAdditional Function: AC Shunt Trip (remote trip capability)\u003c\/li\u003e\n\u003cli\u003eApplication: Industrial and commercial power distribution systems\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eConfiguration and Function\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eSeries: QO Series (Square D \/ Schneider Electric)\u003c\/li\u003e\n\u003cli\u003eModel: QO3501021\u003c\/li\u003e\n\u003cli\u003eCatalog Number: QO3501021\u003c\/li\u003e\n\u003cli\u003eFrame Type: QO Miniature Frame\u003c\/li\u003e\n\u003cli\u003eMounting Style: Plug-On\u003c\/li\u003e\n\u003cli\u003eTerminal Type: Box Lug\u003c\/li\u003e\n\u003cli\u003eCompatibility: QO Load Centers, NQOD Panelboards, OEM interiors \/ Speed-D switchboards\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eMechanical and Physical Characteristics\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eCompact molded breaker housing\u003c\/li\u003e\n\u003cli\u003ePlug-on mounting for QO system compatibility\u003c\/li\u003e\n\u003cli\u003eIntegrated AC shunt trip coil (120\/208\/240VAC)\u003c\/li\u003e\n\u003cli\u003eBox lug terminals for secure conductor termination\u003c\/li\u003e\n\u003cli\u003eDesigned for three-phase distribution systems\u003c\/li\u003e\n\u003cli\u003eWire range: 8 AWG to 2 AWG (Aluminum\/Copper)\u003c\/li\u003e\n\u003cli\u003eSpace-efficient QO-frame construction\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eStandards and Certifications\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eUL Listed\u003c\/li\u003e\n\u003cli\u003eCSA Certified\u003c\/li\u003e\n\u003cli\u003eManufactured by Schneider Electric \/ Square D\u003c\/li\u003e\n\u003cli\u003eDesigned for North American electrical distribution standards\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Square D","offers":[{"title":"NEW","offer_id":48539891630329,"sku":"QO3501021","price":385.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0750\/7810\/7385\/files\/SchneiderElectric-TelemecaniqueSensors_QO3801021_72a8e237-1a49-41d4-aa8a-68af539bf103.jpg?v=1781687014","url":"https:\/\/mycircuitbreakers.com\/products\/square-d-qo3501021-miniature-circuit-breaker-50a-3-pole-240v-plug-in-shunt-trip-qo-series","provider":"My Circuit Breakers","version":"1.0","type":"link"}