{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5TT5031-8","brand":"Siemens","brandSlug":"siemens","productSlug":"5TT5031-8","canonicalUrl":"https://aoctrl.com/siemens/5TT5031-8","factsUrl":"https://aoctrl.com/api/mcp/products/5TT5031-8","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON Insta contactor, 5TT5031-8, 3 NO + 1 NC contacts, 25 A at 400 V AC, 24 V DC/AC coil, 2 modular width units, IP20.","salesMarkdown":"The Siemens 5TT5031-8 is a SENTRON Insta contactor — a compact, DIN-rail-mounted switching device for lighting and resistive loads in commercial and residential panelboards. It carries 3 normally-open and 1 normally-closed contact, rated for 25 A operational current at 400 V AC. The coil accepts both 24 V DC and 24 V AC control voltage, making it flexible for building-management or industrial control circuits. That is the figure to match against your load current — do not derate it for motor starting unless you know the AC-3 rating separately. The 24 V coil means it drops into standard 24 V control systems common in industrial panels; the AC coil variant also accepts 24 V AC from a building-control transformer. The contactor occupies 2 modular width units (MW) on a DIN rail — 35 mm wide — and has an installation depth of 64 mm (overall depth 71 mm). The IP20 enclosure is suitable for dry indoor panels; no washdown rating. The manufacturer notes that spacers are required between units for heat dissipation, so factor that into your rail layout. Snap-on DIN-rail mount, 35 mm width, 2 MW. The 64 mm installation depth fits standard 80 mm deep enclosures. Wire the 3 NO contacts for load switching; the single NC contact can serve as a feedback or auxiliary signal. The 24 V coil is polarity-sensitive only if using DC — verify free-wheel diode polarity if driving from a PLC output with inductive suppression.","metaTitle":"Siemens 5TT5031-8 SENTRON Insta Contactor, 25 A, 400 V, 3 NO","metaDescription":"Siemens 5TT5031-8 SENTRON Insta contactor, 25 A at 400 V AC, 3 NO + 1 NC contacts, 24 V DC/AC coil, 2 MW, IP20. Active production, available to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Contactors"],"specifications":{"Depth":"71 mm","Width":"35 mm","Height":"90 mm","Maximum":"400 V","Minimum":"400 V","Rated Value":"24 V","lifecycle_stage":"current","Installation Depth":"64 mm","Product Brand Name":"SENTRON","Product Designation":"Insta contactor","at DC / rated value":"24 V","protection class IP":"IP20","Design Of The Product":"3 NO contacts 1 NC contact","Rated Value / Maximum":"24 V","number of NC contacts":"3","number of NO contacts":"1","Installation Or Assembly Note":"provision must be made for spacers to ensure heat dissipation","Number Of Modular Width Units":"2","operational current / at AC / rated value":"25 A","Type Of Voltage / Of The Operating Voltage":"AC"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/a1963a672ed3464fb134263dafca1263.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=341623&mlfb=5TT5031-8","alternativesUrl":"https://aoctrl.com/api/mcp/products/5TT5031-8/alternatives.json"},"ai":{"faq":[{"question":"How do I get current pricing and availability for the 5TT5031-8?","answer":"Submit an RFQ for the 5TT5031-8. Pricing and availability are confirmed at quote time through our independent distribution network — no stock figures or lead-time numbers are published here."},{"question":"What are the key ratings of the 5TT5031-8?","answer":"The 5TT5031-8 is rated for 25 A operational current at 400 V AC, with a 24 V DC/AC coil. It has 3 normally-open and 1 normally-closed contact, occupies 2 modular width units (35 mm), and has an IP20 enclosure."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5TT5031-8","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/5TT5031-8 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}}