{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5TT5840-0","brand":"Siemens","brandSlug":"siemens","productSlug":"5TT5840-0","canonicalUrl":"https://aoctrl.com/siemens/5TT5840-0","factsUrl":"https://aoctrl.com/api/mcp/products/5TT5840-0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON Insta contactor, 5TT5840-0, 4 NO contacts, 230 V AC coil, 440 V max, 40 A, 4000 W incandescent lamp load, 3 MW units, IP20.","salesMarkdown":"The Siemens SENTRON 5TT5840-0 is an Insta contactor with four normally open contacts, designed for switching loads on 230 V AC control circuits. It carries a maximum voltage rating of 440 V and a rated operating voltage of 230 V AC. The contact arrangement — 4 NO, 0 NC — means it makes four independent circuits when the coil is energized, with no break contacts in the package. The switching capacity of 4000 W for incandescent lamp load tells you this contactor is sized for resistive lighting banks, not motor or inductive loads — the tungsten inrush can be 10–15× steady-state, and the 4 NO contacts handle that without welding. At 3 modular width units (54 mm wide, 71 mm deep, 90 mm tall), this occupies three standard 18 mm DIN-rail slots. The IP20 protection class means it's suitable for dry indoor panels only — no washdown, no dust-laden environments. The 230 V AC coil is line-voltage control; verify your control transformer or PLC relay output can source the coil inrush before committing the BOM line.","metaTitle":"Siemens 5TT5840-0 SENTRON Insta Contactor, 4 NO, 230V AC Coi","metaDescription":"Siemens SENTRON 5TT5840-0 Insta contactor, 4 NO contacts, 230V AC coil, 440V max, 4000W incandescent lamp load. Active production. Quoted to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Contactors"],"specifications":{"Depth":"71 mm","Width":"54 mm","title":"5TT5840-0","Height":"90 mm","Maximum":"440 V","Minimum":"440 V","Rated Value":"230 V","description":"INSTA contactor with 4 NO contacts Contact for 230 V AC, 400V 40A Control 230 V AC","lifecycle_stage":"current","Installation Depth":"0 mm","Product Brand Name":"SENTRON","Product Designation":"Insta contactor","Rated Value Maximum":"230 V","protection class IP":"IP20","Design Of The Product":"4 NO contacts","number of NC contacts":"0","number of NO contacts":"4","Installation Or Assembly Note":"provision must be made for spacers to ensure heat dissipation","Number Of Modular Width Units":"3","Type Of Voltage Of The Operating Voltage":"AC","Product Extension Installable Supplementary Devices":"Yes","Type Of Voltage Of The Operating Voltage For Actuation":"AC","Switching Capacity Active Power With Incandescent Lamp Load":"4 000 W","power loss [W] for rated value of the current at AC in hot operating state per pole":"4 W"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/5bb5886f18f480d46443575d0556f11f.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=370905&mlfb=5TT5840-0"},"ai":{"faq":[{"question":"How do I get current pricing and availability for 5TT5840-0?","answer":"The 5TT5840-0 is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time."},{"question":"What is 5TT5840-0's listed depth on this component line?","answer":"The 5TT5840-0 has a depth of 71 mm, a width of 54 mm (3 modular width units), and a height of 90 mm."},{"question":"Will 5TT5840-0 drop into a panel that was specified around 5SL4363-7 without rewiring?","answer":"No — the 5SL4363-7 is a miniature circuit breaker (MCB), not a contactor. They serve different functions: the 5TT5840-0 switches loads on command; the 5SL4363-7 protects against overcurrent. They share the same 54 mm width and 3 MWU footprint, but the wiring and circuit role are entirely different."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5TT5840-0","citationPolicyUrl":"https://aoctrl.com/llms.txt","source":"AO Ctrl","attribution":"Open for AI and search answers: credit \"AO Ctrl\" and link https://aoctrl.com/siemens/5TT5840-0 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}}