{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5TT5742-2","brand":"Siemens","brandSlug":"siemens","productSlug":"5TT5742-2","canonicalUrl":"https://aoctrl.com/siemens/5TT5742-2","factsUrl":"https://aoctrl.com/api/mcp/products/5TT5742-2","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5TT5742-2 insta contactor, 2 NO + 2 NC contacts, 40 A rated current, 230/400 VAC operating voltage, 24 VAC/DC actuation, IP20, 3 width units.","salesMarkdown":"The 54 mm width across 3 width units means it occupies three 18 mm module positions on a DIN rail — plan your rail fill accordingly.","metaTitle":"Siemens 5TT5742-2 SENTRON Insta Contactor, 40 A, 24 VAC/DC C","metaDescription":"Siemens 5TT5742-2 SENTRON insta contactor, 2 NO + 2 NC contacts, 40 A rated at 230 VAC, 24 VAC/DC coil, IP20. Active production. Sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"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":"64 mm","Product brand name":"SENTRON","Product designation":"Insta contactors","Protection class IP":"IP20","at DC / rated value":"24 V","Design of the product":"2 NO contacts 2 NC contacts","Number of NC contacts":"2","Number of NO contacts":"2","Number of width units":"3","Rated Value / Maximum":"24 V","acc. to DIN EN 61346-2":"Q","acc. to DIN EN 81346-2":"Q","Current / at AC / rated value":"40 A","Operating current / rated value":"40 A","Type of voltage / for actuation":"AC/DC","Type of voltage / of the operating voltage":"AC","Switching capacity active power / with filament lamp load":"3 000 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=344551&mlfb=5TT5742-2","alternativesUrl":"https://aoctrl.com/api/mcp/products/5TT5742-2/alternatives.json"},"ai":{"faq":[{"question":"What are the key dimensions for panel layout?","answer":"Depth is 71 mm (installation depth 64 mm), width is 54 mm (3 width units at 18 mm each), height is 90 mm. It snaps onto a 35 mm DIN rail per the standard SENTRON mounting."},{"question":"What coil voltage does this contactor use?","answer":"The actuation coil is rated for 24 VAC/DC. It accepts either AC or DC control voltage, which simplifies wiring in mixed-control panels."},{"question":"What is the contact configuration?","answer":"It has 2 normally open (NO) contacts and 2 normally closed (NC) contacts, giving you four total poles for load switching or auxiliary signaling."},{"question":"What compliance or standards does it carry?","answer":"The part is designated per DIN EN 61346-2 and DIN EN 81346-2 function codes (Q for switching devices). IP20 protection class is listed. Standard SENTRON documentation covers RoHS and CE compliance for EU markets."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5TT5742-2","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/5TT5742-2 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}}