{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5TT5751-2","brand":"Siemens","brandSlug":"siemens","productSlug":"5TT5751-2","canonicalUrl":"https://aoctrl.com/siemens/5TT5751-2","factsUrl":"https://aoctrl.com/api/mcp/products/5TT5751-2","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON Insta contactor, 5TT5751-2, 3 NO + 1 NC, 63 A, 24 V AC/DC coil, 230/440 V AC, IP20.","salesMarkdown":"The Siemens 5TT5751-2 is a SENTRON Insta contactor with a 3 NO + 1 NC contact arrangement, rated at 63 A on AC supply. The coil accepts 24 V AC/DC, so it drops into either a 24 VDC control bus or a 24 VAC transformer circuit without a separate rectifier. Rated operating voltage is 230 V AC, with a maximum of 440 V AC — covers standard single-phase and three-phase line voltages up to 440 V phase-to-phase. For motor loads (AC-3 duty), the rating will be lower; the 63 A figure is the thermal current, not the motor-switching current. The 5 000 W switching capacity with filament lamp load means it handles incandescent lighting banks without contact welding — a common spec for building-automation panels. The 3 NO + 1 NC contact set provides three normally-open power poles and one normally-closed auxiliary contact.","metaTitle":"Siemens 5TT5751-2 SENTRON Insta Contactor, 63 A, 3 NO + 1 NC","metaDescription":"Siemens SENTRON Insta contactor 5TT5751-2, 63 A rated, 3 NO + 1 NC contacts, 24 V AC/DC coil, 230/440 V AC, IP20, current lifecycle. Sourced to order against RFQ.","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":"3 NO contacts 1 NC contact","Number of NC contacts":"1","Number of NO contacts":"3","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":"63 A","Operating current / rated value":"63 A","Type of voltage / for actuation":"AC/DC","Type of voltage / of the operating voltage":"AC","Switching capacity active power / with filament lamp load":"5 000 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=33089&mlfb=5TT5751-2","alternativesUrl":"https://aoctrl.com/api/mcp/products/5TT5751-2/alternatives.json"},"ai":{"faq":[{"question":"What are the key ratings of 5TT5751-2?","answer":"Rated current 63 A AC, coil 24 V AC/DC, operating voltage 230 V AC (max 440 V AC), 3 NO + 1 NC contacts, IP20, dimensions 71 × 54 × 90 mm."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5TT5751-2","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/5TT5751-2 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}}