{"product_id":"square-d-qo2251021-miniature-circuit-breaker-25a-2-pole-120-240v-plug-in-ac-shunt-trip-qo-series","title":"Square D QO2251021 Miniature Circuit Breaker – 25A – 2 Pole – 120\/240V – Plug-In – AC Shunt Trip – QO Series","description":"\u003cdiv class=\"qMYqUG_convSearchResultHighlightRoot\"\u003e\n\u003cdiv class=\"\"\u003e\n\u003csection class=\"text-token-text-primary w-full focus:outline-none has-data-writing-block:pointer-events-none [\u0026amp;:has([data-writing-block])\u0026gt;*]:pointer-events-auto R6Vx5W_threadScrollVars scroll-mb-[calc(var(--scroll-root-safe-area-inset-bottom,0px)+var(--thread-response-height))] scroll-mt-[calc(var(--header-height)+min(200px,max(70px,20svh)))]\" dir=\"auto\"\u003e\n\u003cdiv class=\"text-base my-auto mx-auto pb-10 [--thread-content-margin:var(--thread-content-margin-xs,calc(var(--spacing)*4))] @w-sm\/main:[--thread-content-margin:var(--thread-content-margin-sm,calc(var(--spacing)*6))] @w-lg\/main:[--thread-content-margin:var(--thread-content-margin-lg,calc(var(--spacing)*16))] px-(--thread-content-margin)\"\u003e\n\u003cdiv class=\"[--thread-content-max-width:40rem] @w-lg\/main:[--thread-content-max-width:48rem] mx-auto max-w-(--thread-content-max-width) flex-1 group\/turn-messages focus-visible:outline-hidden relative flex w-full min-w-0 flex-col agent-turn\"\u003e\n\u003cdiv class=\"flex max-w-full flex-col gap-4 grow\"\u003e\n\u003cdiv dir=\"auto\" class=\"min-h-8 text-message relative flex w-full flex-col items-end gap-2 text-start break-words whitespace-normal outline-none keyboard-focused:focus-ring [.text-message+\u0026amp;]:mt-1\" tabindex=\"0\"\u003e\n\u003cdiv class=\"flex w-full flex-col gap-1 empty:hidden\"\u003e\n\u003cdiv class=\"markdown prose dark:prose-invert wrap-break-word w-full dark markdown-new-styling\"\u003e\n\u003cp\u003eThe Square D QO2251021 is a QO-series plug-in miniature circuit breaker designed for use in QO load centers, NQOD panelboards, and OEM distribution systems. It provides thermal magnetic protection for overload and short-circuit conditions and includes an integrated AC shunt trip function for remote tripping capability. This breaker is suited for residential, commercial, and light industrial branch circuit applications requiring dependable protection and control.\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: 25 A\u003c\/li\u003e\n\u003cli\u003eVoltage Rating: 120\/240 VAC\u003c\/li\u003e\n\u003cli\u003eDC Rating: 48 VDC\u003c\/li\u003e\n\u003cli\u003eFrequency: 50\/60 Hz\u003c\/li\u003e\n\u003cli\u003ePhase: 1 Phase\u003c\/li\u003e\n\u003cli\u003ePoles: 2 Pole\u003c\/li\u003e\n\u003cli\u003eInterrupting Rating:\n\u003cul\u003e\n\u003cli\u003e10 kA @ 120\/240 VAC (UL\/CSA)\u003c\/li\u003e\n\u003cli\u003e5 kA @ 48 VDC\u003c\/li\u003e\n\u003c\/ul\u003e\n\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\u003eAdditional Feature: AC Shunt Trip (120\/208\/240 VAC)\u003c\/li\u003e\n\u003cli\u003eProtection Type: Branch circuit protection with remote disconnect capability\u003c\/li\u003e\n\u003cli\u003eApplication: General power distribution, lighting, and appliance circuits\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: QO\u003c\/li\u003e\n\u003cli\u003eCatalog Number: QO2251021\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: Pressure Plate\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 miniature breaker body\u003c\/li\u003e\n\u003cli\u003ePlug-on installation for fast panel integration\u003c\/li\u003e\n\u003cli\u003eIntegrated AC shunt trip coil for remote tripping\u003c\/li\u003e\n\u003cli\u003ePressure plate terminals for secure wiring connection\u003c\/li\u003e\n\u003cli\u003eDesigned for standard branch circuit distribution\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\u003eComplies with North American electrical distribution standards\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eThermal magnetic protection for overload and short-circuit faults\u003c\/li\u003e\n\u003cli\u003eIntegrated AC shunt trip for remote control\/disconnect\u003c\/li\u003e\n\u003cli\u003ePlug-on mounting for QO compatibility\u003c\/li\u003e\n\u003cli\u003eCompact design optimized for panelboard space usage\u003c\/li\u003e\n\u003cli\u003eSuitable for residential and light commercial installations\u003c\/li\u003e\n\u003cli\u003eReliable performance in QO and NQOD systems\u003c\/li\u003e\n\u003cli\u003eEnhanced safety and control in a single breaker unit\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"z-0 flex min-h-[46px] justify-start\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv class=\"mt-3 w-full empty:hidden\"\u003e\n\u003cdiv class=\"text-center\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Square D","offers":[{"title":"NEW","offer_id":48539833893113,"sku":"QO2251021","price":312.2,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0750\/7810\/7385\/files\/SchneiderElectric-TelemecaniqueSensors_QO2201021_0b18fa04-99a6-4312-ab55-404ff70b5c60.jpg?v=1781684257","url":"https:\/\/mycircuitbreakers.com\/products\/square-d-qo2251021-miniature-circuit-breaker-25a-2-pole-120-240v-plug-in-ac-shunt-trip-qo-series","provider":"My Circuit Breakers","version":"1.0","type":"link"}