{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5TT5842-0","brand":"Siemens","brandSlug":"siemens","productSlug":"5TT5842-0","canonicalUrl":"https://aoctrl.com/siemens/5TT5842-0","factsUrl":"https://aoctrl.com/api/mcp/products/5TT5842-0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON Insta contactor, 5TT5842-0, 2 NO + 2 NC contacts, 230 V AC coil, 40 A AC operational current, 3 modular width units, IP20.","salesMarkdown":"## Siemens 5TT5842-0 SENTRON Insta Contactor — 40 A, 2 NO + 2 NC, 230 V AC Coil The Siemens 5TT5842-0 is a SENTRON Insta contactor rated for 40 A operational current at AC, with a 230 V AC coil and a contact arrangement of 2 normally-open and 2 normally-closed poles. The 40 A AC-1 rating means it handles resistive loads like lighting and heating banks up to that current; the 4000 W incandescent lamp switching capacity confirms it is sized for large lighting circuits. ## Mounting and Thermal Considerations The manufacturer explicitly requires spacers between adjacent devices to allow heat dissipation — do not gang-mount without the specified air gap, or the 4 W per-pole power loss will accumulate and derate the contactor. Dimensions are 71 mm deep, 54 mm wide, 90 mm tall, fitting standard 3-MW DIN-rail enclosures. Supplementary devices such as auxiliary contact blocks or shunt trips can be installed on the contactor, extending its functionality without replacing the base unit.","metaTitle":"Siemens 5TT5842-0 SENTRON Insta Contactor, 40A 230V AC 2NO 2","metaDescription":"Siemens 5TT5842-0 SENTRON Insta contactor, 40 A AC operational current, 230 V AC coil, 2 NO + 2 NC contacts, 3 MW, IP20. Active production, sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Contactors"],"specifications":{"Depth":"71 mm","Width":"54 mm","Height":"90 mm","Maximum":"440 V","Minimum":"440 V","Rated Value":"230 V","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":"2 NO contacts 2 NC contacts","number of NC contacts":"2","number of NO contacts":"2","Installation Or Assembly Note":"provision must be made for spacers to ensure heat dissipation","Number Of Modular Width Units":"3","operational current at AC rated value":"40 A","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,"priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=22520&mlfb=5TT5842-0","alternativesUrl":"https://aoctrl.com/api/mcp/products/5TT5842-0/alternatives.json"},"ai":{"faq":[{"question":"What are the key ratings of the 5TT5842-0?","answer":"The contactor is rated for 40 A operational current at AC, a 230 V AC coil, 2 NO and 2 NC contacts, and can switch 4000 W of incandescent lamp load."},{"question":"Where can I buy the 5TT5842-0?","answer":"The 5TT5842-0 is sourced and quoted to order against an RFQ through independent distribution; availability and current pricing are confirmed at quote time."},{"question":"What is the depth of the 5TT5842-0?","answer":"The depth is 71 mm."},{"question":"What is the width of the 5TT5842-0?","answer":"The width is 54 mm, which corresponds to 3 modular width units on a DIN rail."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5TT5842-0","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/5TT5842-0 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-09-02T08:15:54.622Z","lastPublished":"2026-09-02T08:15:54.622Z","indexable":true}}