{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"6SL3121-1TE21-0AA4","brand":"Siemens","brandSlug":"siemens","productSlug":"6SL3121-1TE21-0AA4","canonicalUrl":"https://aoctrl.com/siemens/6SL3121-1TE21-0AA4","factsUrl":"https://aoctrl.com/api/mcp/products/6SL3121-1TE21-0AA4","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SINAMICS S120 Single Motor Module, spare part, 6SL3121-1TE21-0AA4, input 600 V DC, output 400 V 3 AC, 9 A, booksize, external air cooling, optimized pulse patterns, Safety Integrated.","salesMarkdown":"The Siemens 6SL3121-1TE21-0AA4 is a SINAMICS S120 Single Motor Module designated as a spare part, taking 600 V DC on the DC link and delivering 400 V three-phase AC at 9 A to the motor. The booksize format with external air cooling means it slots into a multi-axis cabinet alongside other S120 modules, sharing the DC bus and the centralized cooling airflow — not a standalone drive, but a modular axis component for a coordinated drive group. Rated for 9 A output, this module drives a motor sized roughly for that current at 400 V AC — think small conveyors, spindle drives, or auxiliary axes in a machine tool. The optimized pulse patterns reduce motor losses and audible noise at partial load, and the extended Safety Integrated functions (STO, SS1, SBC) let you wire the safety circuit directly to the module without a separate safety relay, saving panel space. ## Integration note Booksize modules mount side-by-side on a common mounting plate inside the S120 cabinet, with the external air cooling ducted through the heat sink. The DRIVE-CLiQ cable connects the Motor Module to the Control Unit or Line Module upstream — verify cable length and routing before panel layout, as the connector strain relief needs clearance.","metaTitle":"6SL3121-1TE21-0AA4 SINAMICS S120 Single Motor Module, 9 A","metaDescription":"Siemens 6SL3121-1TE21-0AA4 SINAMICS S120 Single Motor Module, 600 V DC input, 400 V 3 AC 9 A output, booksize, external air cooling, Safety Integrated. Sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["AC Drive (VFD) 600V"],"specifications":{"title":"6SL3121-1TE21-0AA4","description":"**spare part** SINAMICS S120 Single Motor Module input: 600 V DC output: 400 V 3 AC, 9 A type of construction: booksize external air cooling optimized pulse patterns and support of the extended Safety Integrated functions incl. DRIVE-CLiQ cable","lifecycle_stage":"mature","Datum: 25.02.2021":"Änderungen vorbehalten © Copyright Siemens 2021"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/6fd3b80a50b5a7c388b4b07529915e0a.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=321728&mlfb=6SL3121-1TE21-0AA4"},"ai":{"faq":[{"question":"What is 6SL3121-1TE21-0AA4's listed lifecycle_stage?","answer":"The listed lifecycle_stage is mature, indicating stable production with ongoing support."},{"question":"What is the 6SL3121-1TE21-0AA4 used for?","answer":"It is a SINAMICS S120 Single Motor Module that converts 600 V DC link voltage to 400 V three-phase AC at 9 A to drive a single motor axis in a multi-axis drive system, with integrated safety functions."},{"question":"Where can I buy 6SL3121-1TE21-0AA4?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution channels, with availability and current pricing confirmed at quote time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/6SL3121-1TE21-0AA4","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/6SL3121-1TE21-0AA4 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:51:03.652Z","lastPublished":"2026-08-11T15:51:03.652Z","indexable":true}}