{"product_id":"square-d-s29402-12v-dc-undervoltage-release-mccb-accessory","title":"Square D S29402 12V DC Undervoltage Release – MCCB Accessory","description":"\u003cdiv class=\"qMYqUG_convSearchResultHighlightRoot\"\u003e\n\u003cdiv class=\"\" data-turn-id-container=\"request-6a24657d-22bc-8324-923d-20db3b6f8323-36\" data-is-intersecting=\"true\"\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\" data-turn-id=\"request-6a24657d-22bc-8324-923d-20db3b6f8323-36\" data-turn-id-container=\"request-6a24657d-22bc-8324-923d-20db3b6f8323-36\" data-testid=\"conversation-turn-82\" data-turn=\"assistant\"\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 data-conversation-screenshot-content=\"\" 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 data-message-author-role=\"assistant\" data-message-id=\"ef00d151-f24c-459d-9175-5be7b740abce\" dir=\"auto\" data-message-model-slug=\"gpt-5-5\" 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\" data-turn-start-message=\"true\" 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 light markdown-new-styling\"\u003e\n\u003cp data-start=\"64\" data-end=\"568\"\u003eThe Square D S29402 Undervoltage Release is a circuit breaker accessory designed for PowerPact molded case circuit breakers (MCCBs). Manufactured by Schneider Electric under the Square D brand, this undervoltage release module automatically trips the circuit breaker when the control voltage falls below a safe operating level. It is commonly used in industrial and commercial power distribution systems to protect equipment and ensure safe operation during power interruptions or low-voltage conditions.\u003c\/p\u003e\n\u003ch2 data-section-id=\"k6a4r\" data-start=\"570\" data-end=\"591\"\u003eVoltage and Rating\u003c\/h2\u003e\n\u003cul data-start=\"592\" data-end=\"653\"\u003e\n\u003cli data-section-id=\"1go8rl1\" data-start=\"592\" data-end=\"618\"\u003eControl Voltage: 12 V DC\u003c\/li\u003e\n\u003cli data-section-id=\"a8e6u1\" data-start=\"619\" data-end=\"653\"\u003eType: Undervoltage Release (UVR)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 data-section-id=\"rkota4\" data-start=\"655\" data-end=\"676\"\u003eKey Specifications\u003c\/h2\u003e\n\u003cul data-start=\"677\" data-end=\"919\"\u003e\n\u003cli data-section-id=\"mn2vgp\" data-start=\"677\" data-end=\"715\"\u003eBrand: Square D \/ Schneider Electric\u003c\/li\u003e\n\u003cli data-section-id=\"2c4uun\" data-start=\"716\" data-end=\"750\"\u003eManufacturer: Schneider Electric\u003c\/li\u003e\n\u003cli data-section-id=\"6zu54g\" data-start=\"751\" data-end=\"773\"\u003eModel Number: S29402\u003c\/li\u003e\n\u003cli data-section-id=\"1fmjd19\" data-start=\"774\" data-end=\"793\"\u003eFamily: PowerPact\u003c\/li\u003e\n\u003cli data-section-id=\"1r7z8yi\" data-start=\"794\" data-end=\"835\"\u003eProduct Type: Circuit Breaker Accessory\u003c\/li\u003e\n\u003cli data-section-id=\"1810w09\" data-start=\"836\" data-end=\"874\"\u003eAccessory Type: Undervoltage Release\u003c\/li\u003e\n\u003cli data-section-id=\"uccvhz\" data-start=\"875\" data-end=\"904\"\u003eCategory: Undervoltage Trip\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 data-section-id=\"1cgu054\" data-start=\"1271\" data-end=\"1298\"\u003eTechnical Specifications\u003c\/h2\u003e\n\u003cul data-start=\"1299\" data-end=\"1559\"\u003e\n\u003cli data-section-id=\"1wmkjwo\" data-start=\"1299\" data-end=\"1332\"\u003eCircuit Breaker Suffix Code: UN\u003c\/li\u003e\n\u003cli data-section-id=\"pevr4o\" data-start=\"1333\" data-end=\"1403\"\u003eFunction: Automatically trips breaker during undervoltage conditions\u003c\/li\u003e\n\u003cli data-section-id=\"1gpiz2i\" data-start=\"1404\" data-end=\"1485\"\u003eDesigned for integration into compatible PowerPact molded case circuit breakers\u003c\/li\u003e\n\u003cli data-section-id=\"8p2uj9\" data-start=\"1486\" data-end=\"1559\"\u003eProvides enhanced protection against power loss and voltage instability\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 data-section-id=\"14b1stp\" data-start=\"1561\" data-end=\"1585\"\u003eDimensions and Weight\u003c\/h2\u003e\n\u003cul data-start=\"1586\" data-end=\"1604\"\u003e\n\u003cli data-section-id=\"ybd784\" data-start=\"1586\" data-end=\"1604\"\u003eWeight: 2.25 lbs\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 data-section-id=\"b76q0d\" data-start=\"1606\" data-end=\"1637\"\u003eCertifications and Standards\u003c\/h2\u003e\n\u003cul data-start=\"1638\" data-end=\"1652\"\u003e\n\u003cli data-section-id=\"1a6fkpe\" data-start=\"1638\" data-end=\"1652\"\u003eCSA Approved\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 data-section-id=\"1xcjw99\" data-start=\"1654\" data-end=\"1678\"\u003eFeatures and Benefits\u003c\/h2\u003e\n\u003cul data-start=\"1679\" data-end=\"2103\"\u003e\n\u003cli data-section-id=\"jjguw5\" data-start=\"1679\" data-end=\"1768\"\u003eProvides automatic breaker tripping when control voltage falls below acceptable levels.\u003c\/li\u003e\n\u003cli data-section-id=\"1wm0ub2\" data-start=\"1769\" data-end=\"1835\"\u003eHelps prevent equipment damage caused by low-voltage conditions.\u003c\/li\u003e\n\u003cli data-section-id=\"1aeksit\" data-start=\"1836\" data-end=\"1909\"\u003eImproves operational safety by preventing unintended equipment restart.\u003c\/li\u003e\n\u003cli data-section-id=\"1o9qqgn\" data-start=\"1910\" data-end=\"1975\"\u003eCompatible with a wide range of Square D PowerPact MCCB frames.\u003c\/li\u003e\n\u003cli data-section-id=\"1uvkaqv\" data-start=\"1976\" data-end=\"2037\"\u003eCompact design integrates directly into breaker assemblies.\u003c\/li\u003e\n\u003cli data-section-id=\"1hgml3n\" data-start=\"2038\" data-end=\"2103\"\u003eIdeal for critical power distribution and control applications.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 data-section-id=\"mu966k\" data-start=\"2105\" data-end=\"2120\"\u003eApplications\u003c\/h2\u003e\n\u003cul data-start=\"2121\" data-end=\"2354\"\u003e\n\u003cli data-section-id=\"vc8hdo\" data-start=\"2121\" data-end=\"2160\"\u003eIndustrial Power Distribution Systems\u003c\/li\u003e\n\u003cli data-section-id=\"1aq811x\" data-start=\"2161\" data-end=\"2198\"\u003eCommercial Electrical Installations\u003c\/li\u003e\n\u003cli data-section-id=\"c04670\" data-start=\"2199\" data-end=\"2222\"\u003eMotor Control Centers\u003c\/li\u003e\n\u003cli data-section-id=\"m9xl6y\" data-start=\"2223\" data-end=\"2254\"\u003eCritical Equipment Protection\u003c\/li\u003e\n\u003cli data-section-id=\"1o0higv\" data-start=\"2255\" data-end=\"2283\"\u003eEmergency Shutdown Systems\u003c\/li\u003e\n\u003cli data-section-id=\"4mnp3\" data-start=\"2284\" data-end=\"2313\"\u003eBuilding Automation Systems\u003c\/li\u003e\n\u003cli data-section-id=\"vjwzw2\" data-start=\"2314\" data-end=\"2354\"\u003eMCCB Retrofit and Maintenance Projects\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 data-section-id=\"r2uxc2\" data-start=\"2356\" data-end=\"2374\"\u003eProduct Summary\u003c\/h2\u003e\n\u003cul data-start=\"2375\" data-end=\"2717\" data-is-last-node=\"\" data-is-only-node=\"\"\u003e\n\u003cli data-section-id=\"q9qzjg\" data-start=\"2375\" data-end=\"2392\"\u003eBrand: Square D\u003c\/li\u003e\n\u003cli data-section-id=\"yvr2tv\" data-start=\"2393\" data-end=\"2408\"\u003eModel: S29402\u003c\/li\u003e\n\u003cli data-section-id=\"1jv15zd\" data-start=\"2409\" data-end=\"2437\"\u003eType: Undervoltage Release\u003c\/li\u003e\n\u003cli data-section-id=\"83jk05\" data-start=\"2438\" data-end=\"2463\"\u003eControl Voltage: 12V DC\u003c\/li\u003e\n\u003cli data-section-id=\"15e45qi\" data-start=\"2464\" data-end=\"2555\"\u003eCompatible Frames: DG, DJ, DL, HD, HG, HJ, HL, HR, JD, JG, JJ, JL, JR, LD, LG, LJ, LL, LR\u003c\/li\u003e\n\u003cli data-section-id=\"ybd784\" data-start=\"2556\" data-end=\"2574\"\u003eWeight: 2.25 lbs\u003c\/li\u003e\n\u003cli data-section-id=\"1lv22nk\" data-start=\"2575\" data-end=\"2604\"\u003eCertification: CSA Approved\u003c\/li\u003e\n\u003cli data-section-id=\"1bz1t9l\" data-start=\"2605\" data-end=\"2717\" data-is-last-node=\"\"\u003eFunction: Automatic breaker tripping during undervoltage conditions for enhanced system protection and safety.\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":48537710297337,"sku":"S29402","price":417.2,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0750\/7810\/7385\/files\/S29402-new-1_9c5d9d8c-3e02-4faf-a11c-c0f310da235b.jpg?v=1781626084","url":"https:\/\/mycircuitbreakers.com\/products\/square-d-s29402-12v-dc-undervoltage-release-mccb-accessory","provider":"My Circuit Breakers","version":"1.0","type":"link"}