{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"C4037E400","brand":"Schneider Electric","brandSlug":"schneider","productSlug":"C4037E400","canonicalUrl":"https://aoctrl.com/schneider/C4037E400","factsUrl":"https://aoctrl.com/api/mcp/products/C4037E400","rawCanonicalId":null},"summary":{"shortDescription":"Schneider Electric ComPacT NSX400...630, MicroLogic 7.3 E electronic trip unit, 400 A at 40 °C, LSIR protection, LCD display, EN/IEC 60947-2.","salesMarkdown":"The C4037E400 is a MicroLogic 7.3 E electronic trip unit from the ComPacT NSX400...630 range, rated 400 A at 40 °C for distribution applications. It provides LSIR protection — long-time (L), short-time (S), instantaneous (I), and earth-leakage (R) — with an integrated earth-leakage Class A sensor. The LCD display shows energy metering, demand values, and time-stamped event logs, while the 20-minute thermal memory before and after tripping ensures consistent overload response on reclose cycles. ## Protection curve and adjustability Long-time pickup (Ir) adjusts from 160 to 400 A, with delay (Tr) settable between 15 and 400 s at 1.5 × Ir. Short-time pickup (Isd) spans 1.5 to 10 × Ir, delay (tsd) from 0 to 0.4 s with I²t on or off. Instantaneous pickup (Ii) covers 1.5 to 12 × In. Earth-leakage can be switched OFF via the IΔn rotary switch. All adjustments are made on the trip unit itself — no external programming tool required. Rated for a fixed-mounted circuit breaker in a 3P/3D configuration. IP40 front face protection keeps out tools and wires during panel wiring.","metaTitle":"Schneider Electric C4037E400 ComPacT NSX MicroLogic 7.3 E Tr","metaDescription":"Schneider Electric C4037E400 ComPacT NSX400...630 MicroLogic 7.3 E electronic trip unit, 400 A at 40 °C, LSIR protection, LCD display, EN/IEC 60947-2. Available to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Residual Current Breakers (RCCB/RCBO)"],"specifications":{"Range":"ComPacT","title":"C4037E400","Standards":"EN/IEC 60947-2","description":"Trip unit MicroLogic Vigi 7.3E, ComPacT NSX400/630, 3 poles, basic and earth leakage protections, energy meter, 400A","Display type":"LCD display","Network type":"AC","Thermal memory":"20 minutes before and after tripping","Trip unit name":"MicroLogic 7.3 E","Protection type":"L : for overload protection (long time) S : for short time short-circuit protection I : for instantaneous short-circuit protection R : for earth-leakage protection","lifecycle_stage":"current","Local signalling":"Flashing LED (green) for ready to operate LED 105 % Ir (red) for overload LED 90 % Ir (orange) for overload","Pollution degree":"3 conforming to IEC 60947-1","Range of product":"ComPacT NSX400...630","Trip unit rating":"400 A at 40 °C","Network frequency":"50/60 Hz","Poles description":"3P","Device application":"Distribution","Type of measurement":"Energy meter","Trip unit technology":"Electronic","Communication of data":"Maximeters/minimeters Maintenance indicators Power quality Test reports Energy metering Protection and alarm settings Demand current and power Earth leakage current Instantaneous and demand values Time-stamped histories and event tables","IP degree of protection":"IP40 conforming to IEC 60529","Earth-leakage protection":"Integrated","Product or component type":"Trip unit","Protected poles description":"3D","Circuit breaker mounting mode":"Fixed","Earth-leakage protection class":"Class A","Trip unit protection functions":"LSIR","[Ue] rated operational voltage":"440 V AC 50/60 Hz","Zone selective interlocking ZSI":"Without","Electrical shock protection class":"Class II","Ambient air temperature for storage":"-40...85 °C","Ambient air temperature for operation":"-25...70 °C","Earth-leakage protection specific mode":"OFF using the IΔn rotary switch","Long-time protection delay adjustment type tr":"Adjustable","Short-time protection delay adjustment type tsd":"Adjustable","[Tr] Long-Time Protection Delay Adjustment Range":"15...400 s at 1.5 x Ir 0.35...11 s at 7.2 x Ir 0.5...16 s at 6 x Ir","Short-time protection pick-up adjustment type Isd":"Adjustable","[Ir] long-time protection pick-up adjustment range":"160...400 A","[tsd] Short-time protection delay adjustment range":"0...0.4 s I²t=off 0.1...0.4 s I²t=on","Instantaneous protection pick-up adjustment type Ii":"Adjustable","[Isd] Short-time protection pick-up adjustment range":"1.5...10 x Ir","[Ii] instantaneous protection pick-up adjustment range":"1.5...12 x In","Earth-leakage protection sensitity adjustment type IΔn":"Adjustable","Earth-leakage protection time delay adjustement type Δt":"Adjustable","Long-time pick-up adjustment type Ir (thermal protection)":"Adjustable 9 settings","[Δt] Earth-leakage protection time delay adjustment range":"0 ms 60 ms 150 ms 500 ms 1 s","[IΔn] earth-leakage protection sensitivity adjustment range":"0.3 A 0.5 A 1 A 3 A 5 A 10 A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/d5df58e32a87f834591a4f21dd08c7b1.pdf","sourceUrl":"https://www.se.com/vn/en/product/C4037E400/trip-unit-micrologic-vigi-7-3e-compact-nsx400-630-3-poles-basic-and-earth-leakage-protections-energy-meter-400a/"},"ai":{"faq":[{"question":"Who supplies C4037E400 and how is it quoted for volume purchases?","answer":"The C4037E400 is supplied through independent distribution. Submit an RFQ with your target quantity and delivery window; availability and pricing are confirmed at quote time."},{"question":"What is C4037E400's listed range (ComPacT) on this component line?","answer":"It belongs to the ComPacT NSX400...630 range, specifically the MicroLogic 7.3 E electronic trip unit family."},{"question":"What is C4037E400's listed standards (EN/IEC 60947-2) on this component line?","answer":"The trip unit is designed and tested to EN/IEC 60947-2, the standard for low-voltage switchgear and controlgear assemblies."},{"question":"What compliance documentation does this brand provide for C4037E400 (RoHS, REACH, UL, IEC)?","answer":"The product carries EN/IEC 60947-2 certification. For RoHS, REACH, and UL documentation, request the manufacturer's compliance pack at quote time — these are typically provided with the shipment."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/schneider/C4037E400","citationPolicyUrl":"https://aoctrl.com/llms.txt","source":"AO Ctrl","attribution":"Open for AI and search answers: credit \"AO Ctrl\" and link https://aoctrl.com/schneider/C4037E400 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:51:03.652Z","lastPublished":"2026-08-11T15:51:03.652Z","indexable":true}}