{"product_id":"square-d-s29407-undervoltage-trip-h-j-l-frame-mccb-accessory-208-277v-ac","title":"Square D S29407 Undervoltage Trip – H\/J\/L Frame MCCB Accessory – 208–277V AC","description":"\u003cp data-start=\"80\" data-end=\"659\"\u003eThe Square D S29407 Undervoltage Trip is a circuit breaker accessory designed for H-, J-, and L-frame molded case circuit breakers (MCCBs). Manufactured by Schneider Electric under the Square D brand, this undervoltage trip module automatically opens the circuit breaker when the control voltage falls below a predetermined level, helping protect electrical systems from unsafe operating conditions caused by voltage loss or instability. Although this model has been discontinued by the manufacturer, it remains a replacement and maintenance component for existing installations.\u003c\/p\u003e\n\u003ch2 data-section-id=\"k6a4r\" data-start=\"661\" data-end=\"682\"\u003eVoltage and Rating\u003c\/h2\u003e\n\u003cul data-start=\"683\" data-end=\"779\"\u003e\n\u003cli data-section-id=\"yr70nu\" data-start=\"683\" data-end=\"724\"\u003eRated Control Voltage: 208–277 Volts AC\u003c\/li\u003e\n\u003cli data-section-id=\"1rl3n3z\" data-start=\"725\" data-end=\"750\"\u003eType: Undervoltage Trip\u003c\/li\u003e\n\u003cli data-section-id=\"jagvqz\" data-start=\"751\" data-end=\"779\"\u003eOperating Voltage: AC Only\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 data-section-id=\"rkota4\" data-start=\"781\" data-end=\"802\"\u003eKey Specifications\u003c\/h2\u003e\n\u003cul data-start=\"803\" data-end=\"1061\"\u003e\n\u003cli data-section-id=\"q9qzjg\" data-start=\"803\" data-end=\"820\"\u003eBrand: Square D\u003c\/li\u003e\n\u003cli data-section-id=\"2c4uun\" data-start=\"821\" data-end=\"855\"\u003eManufacturer: Schneider Electric\u003c\/li\u003e\n\u003cli data-section-id=\"6zu54l\" data-start=\"856\" data-end=\"878\"\u003eModel Number: S29407\u003c\/li\u003e\n\u003cli data-section-id=\"1r7z8yi\" data-start=\"879\" data-end=\"920\"\u003eProduct Type: Circuit Breaker Accessory\u003c\/li\u003e\n\u003cli data-section-id=\"1y3jo73\" data-start=\"921\" data-end=\"956\"\u003eAccessory Type: Undervoltage Trip\u003c\/li\u003e\n\u003cli data-section-id=\"anht6m\" data-start=\"957\" data-end=\"1022\"\u003eCompatibility: H-, J-, and L-Frame Molded Case Circuit Breakers\u003c\/li\u003e\n\u003cli data-section-id=\"1oidr75\" data-start=\"1023\" data-end=\"1061\"\u003eStatus: Discontinued by Manufacturer\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 data-section-id=\"1cgu054\" data-start=\"1063\" data-end=\"1090\"\u003eTechnical Specifications\u003c\/h2\u003e\n\u003cul data-start=\"1091\" data-end=\"1373\"\u003e\n\u003cli data-section-id=\"mvr6dv\" data-start=\"1091\" data-end=\"1163\"\u003eDesigned for automatic breaker tripping during undervoltage conditions\u003c\/li\u003e\n\u003cli data-section-id=\"1ruqmtv\" data-start=\"1164\" data-end=\"1237\"\u003eHelps prevent equipment damage and unsafe operation during voltage loss\u003c\/li\u003e\n\u003cli data-section-id=\"1lg4lft\" data-start=\"1238\" data-end=\"1302\"\u003eIntegrates directly into compatible circuit breaker assemblies\u003c\/li\u003e\n\u003cli data-section-id=\"1pyhsfd\" data-start=\"1303\" data-end=\"1373\"\u003eSuitable for industrial and commercial electrical protection systems\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 data-section-id=\"1rew726\" data-start=\"1375\" data-end=\"1401\"\u003ePhysical Specifications\u003c\/h2\u003e\n\u003cul data-start=\"1402\" data-end=\"1429\"\u003e\n\u003cli data-section-id=\"1ht7pcg\" data-start=\"1402\" data-end=\"1429\"\u003eWeight: 0.45 kg (0.99 lb)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 data-section-id=\"we2dfi\" data-start=\"1431\" data-end=\"1446\"\u003eProduct Data\u003c\/h2\u003e\n\u003cul data-start=\"1447\" data-end=\"1613\"\u003e\n\u003cli data-section-id=\"p26nid\" data-start=\"1447\" data-end=\"1492\"\u003eManufacturer: Schneider Electric \/ Square D\u003c\/li\u003e\n\u003cli data-section-id=\"1x7utvx\" data-start=\"1493\" data-end=\"1514\"\u003ePart Number: S29407\u003c\/li\u003e\n\u003cli data-section-id=\"x2sjvd\" data-start=\"1515\" data-end=\"1552\"\u003eCategory: Circuit Breaker Accessory\u003c\/li\u003e\n\u003cli data-section-id=\"13b04l3\" data-start=\"1553\" data-end=\"1613\"\u003eSubcategory: Molded Case Circuit Breaker Undervoltage Trip\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 data-section-id=\"1xcjw99\" data-start=\"1615\" data-end=\"1639\"\u003eFeatures and Benefits\u003c\/h2\u003e\n\u003cul data-start=\"1640\" data-end=\"2032\"\u003e\n\u003cli data-section-id=\"r325xg\" data-start=\"1640\" data-end=\"1703\"\u003eProvides automatic protection against low-voltage conditions.\u003c\/li\u003e\n\u003cli data-section-id=\"1nwnjka\" data-start=\"1704\" data-end=\"1770\"\u003ePrevents unexpected equipment operation after power restoration.\u003c\/li\u003e\n\u003cli data-section-id=\"uzmpir\" data-start=\"1771\" data-end=\"1823\"\u003eEnhances electrical system safety and reliability.\u003c\/li\u003e\n\u003cli data-section-id=\"ch1pqg\" data-start=\"1824\" data-end=\"1891\"\u003eDesigned for seamless integration with H-, J-, and L-frame MCCBs.\u003c\/li\u003e\n\u003cli data-section-id=\"1mabtnp\" data-start=\"1892\" data-end=\"1972\"\u003eIdeal for applications requiring automatic shutdown during power disturbances.\u003c\/li\u003e\n\u003cli data-section-id=\"13zkdrg\" data-start=\"1973\" data-end=\"2032\"\u003eCompact design minimizes installation space requirements.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 data-section-id=\"mu966k\" data-start=\"2034\" data-end=\"2049\"\u003eApplications\u003c\/h2\u003e\n\u003cul data-start=\"2050\" data-end=\"2289\"\u003e\n\u003cli data-section-id=\"vc8hdo\" data-start=\"2050\" data-end=\"2089\"\u003eIndustrial Power Distribution Systems\u003c\/li\u003e\n\u003cli data-section-id=\"1aq811x\" data-start=\"2090\" data-end=\"2127\"\u003eCommercial Electrical Installations\u003c\/li\u003e\n\u003cli data-section-id=\"c04670\" data-start=\"2128\" data-end=\"2151\"\u003eMotor Control Centers\u003c\/li\u003e\n\u003cli data-section-id=\"1o0higv\" data-start=\"2152\" data-end=\"2180\"\u003eEmergency Shutdown Systems\u003c\/li\u003e\n\u003cli data-section-id=\"m9xl6y\" data-start=\"2181\" data-end=\"2212\"\u003eCritical Equipment Protection\u003c\/li\u003e\n\u003cli data-section-id=\"1o59mlg\" data-start=\"2213\" data-end=\"2248\"\u003eBuilding Power Management Systems\u003c\/li\u003e\n\u003cli data-section-id=\"vjwzw2\" data-start=\"2249\" data-end=\"2289\"\u003eMCCB Retrofit and Maintenance Projects\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 data-section-id=\"14bu82z\" data-start=\"2291\" data-end=\"2307\"\u003eCompatibility\u003c\/h2\u003e\n\u003cul data-start=\"2308\" data-end=\"2424\"\u003e\n\u003cli data-section-id=\"weolbb\" data-start=\"2308\" data-end=\"2346\"\u003eH-Frame Molded Case Circuit Breakers\u003c\/li\u003e\n\u003cli data-section-id=\"4t1kmd\" data-start=\"2347\" data-end=\"2385\"\u003eJ-Frame Molded Case Circuit Breakers\u003c\/li\u003e\n\u003cli data-section-id=\"qlmqr\" data-start=\"2386\" data-end=\"2424\"\u003eL-Frame Molded Case Circuit Breakers\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 data-section-id=\"r2uxc2\" data-start=\"2426\" data-end=\"2444\"\u003eProduct Summary\u003c\/h2\u003e\n\u003cul data-start=\"2445\" data-end=\"2714\" data-is-last-node=\"\" data-is-only-node=\"\"\u003e\n\u003cli data-section-id=\"q9qzjg\" data-start=\"2445\" data-end=\"2462\"\u003eBrand: Square D\u003c\/li\u003e\n\u003cli data-section-id=\"yvr2ty\" data-start=\"2463\" data-end=\"2478\"\u003eModel: S29407\u003c\/li\u003e\n\u003cli data-section-id=\"1y3jo73\" data-start=\"2479\" data-end=\"2514\"\u003eAccessory Type: Undervoltage Trip\u003c\/li\u003e\n\u003cli data-section-id=\"15tmfq0\" data-start=\"2515\" data-end=\"2544\"\u003eVoltage Rating: 208–277V AC\u003c\/li\u003e\n\u003cli data-section-id=\"udmin3\" data-start=\"2545\" data-end=\"2577\"\u003eCompatible Frames: H, J, and L\u003c\/li\u003e\n\u003cli data-section-id=\"b42v6r\" data-start=\"2578\" data-end=\"2647\"\u003eFunction: Automatic breaker tripping during undervoltage conditions\u003c\/li\u003e\n\u003cli data-section-id=\"1oidr75\" data-start=\"2648\" data-end=\"2686\"\u003eStatus: Discontinued by Manufacturer\u003c\/li\u003e\n\u003cli data-section-id=\"1ht7pcg\" data-start=\"2687\" data-end=\"2714\" data-is-last-node=\"\"\u003eWeight: 0.45 kg (0.99 lb)\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Square D","offers":[{"title":"NEW","offer_id":48537681297657,"sku":"S29407","price":417.2,"currency_code":"USD","in_stock":true}],"url":"https:\/\/mycircuitbreakers.com\/products\/square-d-s29407-undervoltage-trip-h-j-l-frame-mccb-accessory-208-277v-ac","provider":"My Circuit Breakers","version":"1.0","type":"link"}