{"product_id":"square-d-lda36400u31x-powerpact-mccb-3-pole-400a-600v-i-line-plug-in-electronic-trip-unit-lsi-molded-case-circuit-breaker","title":"Square D LDA36400U31X PowerPact MCCB – 3 Pole – 400A – 600V – I-Line Plug-In – Electronic Trip Unit (LSI) – Molded Case Circuit Breaker","description":"\u003cdiv class=\"qMYqUG_convSearchResultHighlightRoot\"\u003e\n\u003cdiv class=\"\" data-turn-id-container=\"request-6a31a0c3-2920-83e8-9ae5-ebad8e9576ce-20\" 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-6a31a0c3-2920-83e8-9ae5-ebad8e9576ce-20\" data-turn-id-container=\"request-6a31a0c3-2920-83e8-9ae5-ebad8e9576ce-20\" data-testid=\"conversation-turn-48\" 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=\"794bcb0c-672b-4300-8e85-f85fc79e74ad\" dir=\"auto\" data-message-model-slug=\"gpt-5-3-mini\" 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 dark markdown-new-styling\"\u003e\n\u003cp data-start=\"183\" data-end=\"589\"\u003eThe Schneider Electric \/ Square D LDA36400U31X is a PowerPact LDA-series molded case circuit breaker (MCCB) designed for high-performance industrial power distribution and protection. It is built for reliable protection of three-phase electrical systems, offering advanced electronic trip functionality and high interrupting capacity for demanding commercial and industrial applications.\u003c\/p\u003e\n\u003ch3 data-section-id=\"1vwh4os\" data-start=\"596\" data-end=\"622\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong data-start=\"600\" data-end=\"622\"\u003eElectrical Ratings\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul data-start=\"623\" data-end=\"903\"\u003e\n\u003cli data-section-id=\"1pogtuc\" data-start=\"623\" data-end=\"660\"\u003eFrame \/ Line Rated Current: 400 A\u003c\/li\u003e\n\u003cli data-section-id=\"u7dvy9\" data-start=\"661\" data-end=\"695\"\u003eRated Current (Breaker): 400 A\u003c\/li\u003e\n\u003cli data-section-id=\"wj47e3\" data-start=\"696\" data-end=\"730\"\u003eVoltage Rating: up to 600 V AC\u003c\/li\u003e\n\u003cli data-section-id=\"179harl\" data-start=\"731\" data-end=\"749\"\u003ePhase: 3 Phase\u003c\/li\u003e\n\u003cli data-section-id=\"kdtmuq\" data-start=\"750\" data-end=\"767\"\u003ePoles: 3 Pole\u003c\/li\u003e\n\u003cli data-section-id=\"1mn12cq\" data-start=\"768\" data-end=\"811\"\u003eInterrupting Capacity: 18 kA @ 480 V AC\u003c\/li\u003e\n\u003cli data-section-id=\"l5qh7g\" data-start=\"812\" data-end=\"846\"\u003eContinuous Current Rating: 80%\u003c\/li\u003e\n\u003cli data-section-id=\"g4fbzy\" data-start=\"847\" data-end=\"903\"\u003eUtilization: Power distribution and motor protection\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-section-id=\"q9xwgw\" data-start=\"910\" data-end=\"947\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong data-start=\"914\" data-end=\"947\"\u003eProtection and Trip Functions\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul data-start=\"948\" data-end=\"1237\"\u003e\n\u003cli data-section-id=\"fnqi3p\" data-start=\"948\" data-end=\"1015\"\u003eTrip Unit Technology: Electronic (MicroLogic 3.3 \/ standard LI)\u003c\/li\u003e\n\u003cli data-section-id=\"1cdk4x9\" data-start=\"1016\" data-end=\"1138\"\u003eProtection Functions:\n\u003cul data-start=\"1044\" data-end=\"1138\"\u003e\n\u003cli data-section-id=\"rifys0\" data-start=\"1044\" data-end=\"1079\"\u003eLong-Time Protection (Overload)\u003c\/li\u003e\n\u003cli data-section-id=\"orvgrl\" data-start=\"1082\" data-end=\"1107\"\u003eShort-Time Protection\u003c\/li\u003e\n\u003cli data-section-id=\"mfo9bn\" data-start=\"1110\" data-end=\"1138\"\u003eInstantaneous Protection\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"q9b5t8\" data-start=\"1139\" data-end=\"1182\"\u003eProtection Type: Solid-state electronic\u003c\/li\u003e\n\u003cli data-section-id=\"vpzr6n\" data-start=\"1183\" data-end=\"1207\"\u003eControl Type: Toggle\u003c\/li\u003e\n\u003cli data-section-id=\"nejvhs\" data-start=\"1208\" data-end=\"1237\"\u003eBreaking Capacity Code: D\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-section-id=\"1pog7sv\" data-start=\"1244\" data-end=\"1278\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong data-start=\"1248\" data-end=\"1278\"\u003eConfiguration and Function\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul data-start=\"1279\" data-end=\"1570\"\u003e\n\u003cli data-section-id=\"1ln99js\" data-start=\"1279\" data-end=\"1330\"\u003eDevice Type: Molded Case Circuit Breaker (MCCB)\u003c\/li\u003e\n\u003cli data-section-id=\"l4d7kp\" data-start=\"1331\" data-end=\"1356\"\u003eSeries: PowerPact LDA\u003c\/li\u003e\n\u003cli data-section-id=\"1ate1oa\" data-start=\"1357\" data-end=\"1412\"\u003eMounting Type: I-Line Style Plug-In (Bracket Mount)\u003c\/li\u003e\n\u003cli data-section-id=\"zc1y13\" data-start=\"1413\" data-end=\"1479\"\u003eElectrical Connection: I-Line line connection \/ lugs load side\u003c\/li\u003e\n\u003cli data-section-id=\"i090o4\" data-start=\"1480\" data-end=\"1570\"\u003eApplication Type: Industrial power distribution, feeder protection, and motor circuits\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-section-id=\"1i5ken1\" data-start=\"1577\" data-end=\"1624\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong data-start=\"1581\" data-end=\"1624\"\u003eMechanical and Physical Characteristics\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul data-start=\"1625\" data-end=\"1880\"\u003e\n\u003cli data-section-id=\"1dyolin\" data-start=\"1625\" data-end=\"1681\"\u003eDimensions (H × W × D): 13.39 in × 5.51 in × 4.33 in\u003c\/li\u003e\n\u003cli data-section-id=\"1hbpqv6\" data-start=\"1682\" data-end=\"1703\"\u003eWeight: 13.67 lbs\u003c\/li\u003e\n\u003cli data-section-id=\"13kjebf\" data-start=\"1704\" data-end=\"1753\"\u003eTrip Unit: Non-interchangeable MicroLogic 3.3\u003c\/li\u003e\n\u003cli data-section-id=\"snp3vm\" data-start=\"1754\" data-end=\"1798\"\u003eWire Range: AWG 3\/0 to 500 kcmil (Al\/Cu)\u003c\/li\u003e\n\u003cli data-section-id=\"11bl0mz\" data-start=\"1799\" data-end=\"1839\"\u003eMounting Mode: I-Line bracket system\u003c\/li\u003e\n\u003cli data-section-id=\"hjjsko\" data-start=\"1840\" data-end=\"1880\"\u003eCompact industrial MCCB frame design\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-section-id=\"13jmbe6\" data-start=\"1887\" data-end=\"1923\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong data-start=\"1891\" data-end=\"1923\"\u003eStandards and Certifications\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul data-start=\"1924\" data-end=\"2095\"\u003e\n\u003cli data-section-id=\"817qfb\" data-start=\"1924\" data-end=\"1952\"\u003eUL Listed \/ CSA Approved\u003c\/li\u003e\n\u003cli data-section-id=\"5kuxpk\" data-start=\"1953\" data-end=\"2014\"\u003eDesigned for industrial and commercial electrical systems\u003c\/li\u003e\n\u003cli data-section-id=\"f8032d\" data-start=\"2015\" data-end=\"2062\"\u003eManufacturer: Schneider Electric \/ Square D\u003c\/li\u003e\n\u003cli data-section-id=\"i06i33\" data-start=\"2063\" data-end=\"2095\"\u003eFamily: PowerPact LDA Series\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-section-id=\"kylm4h\" data-start=\"2102\" data-end=\"2118\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong data-start=\"2106\" data-end=\"2118\"\u003eFeatures\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul data-start=\"2119\" data-end=\"2694\" data-is-last-node=\"\" data-is-only-node=\"\"\u003e\n\u003cli data-section-id=\"1qhqk3b\" data-start=\"2119\" data-end=\"2184\"\u003eHigh-capacity 400A molded case breaker for industrial systems\u003c\/li\u003e\n\u003cli data-section-id=\"gid90k\" data-start=\"2185\" data-end=\"2250\"\u003eAdvanced electronic LSI protection for precise fault handling\u003c\/li\u003e\n\u003cli data-section-id=\"1mv8xtk\" data-start=\"2251\" data-end=\"2326\"\u003e18 kA interrupting rating at 480V for reliable short-circuit protection\u003c\/li\u003e\n\u003cli data-section-id=\"1yduzt2\" data-start=\"2327\" data-end=\"2390\"\u003eI-Line plug-in design for fast installation and replacement\u003c\/li\u003e\n\u003cli data-section-id=\"1aof708\" data-start=\"2391\" data-end=\"2458\"\u003eSuitable for feeders, distribution panels, and motor protection\u003c\/li\u003e\n\u003cli data-section-id=\"nhhpdb\" data-start=\"2459\" data-end=\"2509\"\u003eCompact yet heavy-duty industrial construction\u003c\/li\u003e\n\u003cli data-section-id=\"1cm2znd\" data-start=\"2510\" data-end=\"2575\"\u003eSolid-state MicroLogic 3.3 trip unit for accurate performance\u003c\/li\u003e\n\u003cli data-section-id=\"1egrpfd\" data-start=\"2576\" data-end=\"2624\"\u003eHigh conductor flexibility (Al\/Cu supported)\u003c\/li\u003e\n\u003cli data-section-id=\"1o0mkhi\" data-start=\"2625\" data-end=\"2694\" data-is-last-node=\"\"\u003eDesigned for long-term reliability in harsh electrical environments\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":48538163740921,"sku":"LDA36400U31X","price":3317.14,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0750\/7810\/7385\/files\/CB-LDA36400U31X-1.webp?v=1781642285","url":"https:\/\/mycircuitbreakers.com\/products\/square-d-lda36400u31x-powerpact-mccb-3-pole-400a-600v-i-line-plug-in-electronic-trip-unit-lsi-molded-case-circuit-breaker","provider":"My Circuit Breakers","version":"1.0","type":"link"}