{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1627-1AC21","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1627-1AC21","canonicalUrl":"https://aoctrl.com/siemens/3RT1627-1AC21","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1627-1AC21","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RT1627-1AC21 capacitor contactor, AC-6 duty, 25 kVAr at 400 V, 24 V AC 50/60 Hz coil, 3-pole, Size S0, screw terminals.","salesMarkdown":"The 3RT1627-1AC21 is a phased-out product. The official Siemens successor is the SIRIUS 3RT2627-1AC25. The AC-6 rating of 25 kVAr at 400 V is the critical spec: it defines the maximum capacitor bank size this contactor can switch without excessive inrush current or contact wear. The 24 V AC coil (50/60 Hz) draws its control voltage from a standard control transformer; the 3-pole main contacts handle the three-phase capacitor circuit. A single NO auxiliary contact (1 NO) is integrated for status feedback or interlocking. At 45 mm wide, 100 mm tall, and 135 mm deep, it occupies the standard S0 footprint. Side-by-side mounting is permitted with zero spacing, saving panel width. The part carries a RoHS compliance date of 01.07.2006, indicating it meets the original RoHS directive.","metaTitle":"Siemens 3RT1627-1AC21 Capacitor Contactor, 25 kVAr, 24 V AC,","metaDescription":"Siemens SIRIUS 3RT1627-1AC21 capacitor contactor, AC-6 rated 25 kVAr at 400 V. 24 V AC coil, 3-pole, S0 size. Phased-out; successor 3RT2627-1AC25. Sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Contactors"],"specifications":{"Depth":"135 mm","Width":"45 mm","Height":"100 mm","On The Front":"IP20","Of The Terminal":"IP00","Type Of Voltage":"AC","lifecycle_stage":"current","Fastening Method":"screw and snap-on mounting onto 35 mm standard mounting rail according to DIN EN 50022","protection class IP":"IP20","at 50 Hz rated value":"24 ... 24 V","at 60 Hz rated value":"24 ... 24 V","Side-By-Side Mounting":"Yes","For Main Current Circuit":"screw-type terminals","at AC-1 at 400 V rated value":"35 A","Substance Prohibitance (Date)":"01.07.2006 00:00:00","For Auxiliary And Control Circuit":"screw-type terminals","reference code acc. to IEC 81346-2":"Q","Ambient Temperature During Operation":"-25 ... +60 °C","number of NC contacts for main contacts":"0","number of NO contacts for main contacts":"3","number of NC contacts for auxiliary contacts":"0","number of NO contacts for auxiliary contacts":"1","Identification Number And Letter For Switching Elements":"1","Supply Voltage Frequency For Auxiliary And Control Circuit Rated Value":"50 ... 60 Hz"}},"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=474933&mlfb=3RT1627-1AC21","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT1627-1AC21/alternatives.json"},"ai":{"faq":[{"question":"What is the successor to 3RT1627-1AC21?","answer":"The preferred successor is the SIRIUS 3RT2627-1AC25."},{"question":"Where can I buy 3RT1627-1AC21?","answer":"This part is sourced through independent distribution channels and quoted to order against an RFQ. Availability and current pricing are confirmed at quote time."},{"question":"What are the key ratings of 3RT1627-1AC21?","answer":"It is rated AC-6 at 25 kVAr / 400 V, with a 24 V AC 50/60 Hz coil. It has 3 NO main contacts and 1 NO auxiliary contact."},{"question":"Will 3RT1627-1AC21 fit a panel designed for 3RT1026-1AB00?","answer":"Both are S0 size (45 mm wide) and mount on 35 mm DIN rail, so the footprint is the same. However, the 3RT1026-1AB00 is a standard power contactor, not a capacitor contactor, so the switching duty differs. Verify the capacitor bank rating and coil voltage before substitution."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1627-1AC21","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/3RT1627-1AC21 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}}