{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5TT5701-2","brand":"Siemens","brandSlug":"siemens","productSlug":"5TT5701-2","canonicalUrl":"https://aoctrl.com/siemens/5TT5701-2","factsUrl":"https://aoctrl.com/api/mcp/products/5TT5701-2","rawCanonicalId":null},"summary":{"shortDescription":"Siemens INSTA series, contactor, 1 NO + 1 NC contact, 20 A at 230/400 V AC, 24 V AC coil, 5TT5701-2.","salesMarkdown":"The 24 V AC coil is common in building automation and HVAC control circuits; verify your control transformer supplies AC, not DC, because the coil impedance is tuned for AC and a DC supply will draw locked-rotor current and fail. The 1 NO + 1 NC contact set gives you one make and one break — enough for a single load with a status feedback, but not for reversing or star-delta. ## Panel integration Snap-on DIN rail mount, standard 35 mm profile. The INSTA form factor is compact — roughly 2 module widths — so it fits in a distribution board or sub-panel without crowding adjacent breakers. Spring-cage terminals accept 0.5–4 mm² solid or stranded; strip 8 mm and push in with a screwdriver. Lifecycle stage is current.","metaTitle":"5TT5701-2 Siemens INSTA Contactor, 1NO+1NC, 20 A, 24 V AC","metaDescription":"Siemens 5TT5701-2 INSTA contactor with 1 NO + 1 NC contact, rated 20 A at 230/400 V AC, 24 V AC coil. Lifecycle stage: current. Available to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Contactors"],"specifications":{"lifecycle_stage":"current"}},"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=355594&mlfb=5TT5701-2","alternativesUrl":"https://aoctrl.com/api/mcp/products/5TT5701-2/alternatives.json"},"ai":{"faq":[{"question":"What is 5TT5701-2 used for?","answer":"It is a 20 A contactor with one NO and one NC contact, used for switching resistive or moderate inductive loads at 230/400 V AC, with a 24 V AC coil for building automation or HVAC control panels."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5TT5701-2","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/5TT5701-2 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}}