{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"6ES7401-2TA01-0AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"6ES7401-2TA01-0AA0","canonicalUrl":"https://aoctrl.com/siemens/6ES7401-2TA01-0AA0","factsUrl":"https://aoctrl.com/api/mcp/products/6ES7401-2TA01-0AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIMATIC S7-400 rack CR2, 6ES7401-2TA01-0AA0, 18 slots in 2 segments, P bus throughout, 482.5 mm width, 290 mm height, 27.5 mm depth.","salesMarkdown":"The Siemens 6ES7401-2TA01-0AA0 is a SIMATIC S7-400 rack, type CR2, designed as the central rack for a redundant or segmented S7-400 system. It provides 18 slots arranged in 2 segments — one with 8 slots and the other with 10 slots — allowing you to partition the backplane into two independent P bus segments while keeping them in a single physical chassis. The P bus runs throughout both segments, meaning I/O modules in either segment communicate over the same backplane bus, but the segmentation lets you isolate power supply zones or separate control domains without a second rack. Two redundant power supplies can be plugged in, supporting high-availability configurations. The rack measures 482.5 mm wide, 290 mm high, and 27.5 mm deep — standard 19-inch rack width, so it mounts in a 19-inch cabinet without adapters. The 290 mm height is roughly 6.5 rack units (1 U = 44.45 mm), so plan for 7 U of vertical space to allow airflow and cabling clearance above and below. Rated for 0 °C to 70 °C operating ambient, which covers most control-room and panel environments. The 70 °C ceiling is useful if the rack sits above a row of high-power drives or in a non-conditioned enclosure with solar gain. No substitution needed — the 6ES7401-2TA01-0AA0 is the correct CR2 rack for new S7-400 builds or spares. If you are replacing a 6ES7400-1JA11-0AA1 (the 9-slot UR1 rack), note that the CR2 is wider (482.5 mm vs 257.5 mm) and has a different slot count and segmentation; it will not drop into the same panel footprint without mechanical rework. Carries UL, CE, UKCA, FM, KC, EAC, and RCM approvals plus CCC (China Compulsory Certification). That covers installations in North America, the EU, UK, Russia/Eurasia, South Korea, Australia/New Zealand, and China — one rack for global machine builds.","metaTitle":"Siemens 6ES7401-2TA01-0AA0 SIMATIC S7-400 Rack CR2, 18 Slots","metaDescription":"Siemens 6ES7401-2TA01-0AA0 SIMATIC S7-400 rack CR2, 18 slots in 2 segments, P bus throughout, active production, UL/CE/UKCA/FM approved. Sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["PLC I/O & Expansion Modules"],"specifications":{"CCC":"Yes","Max.":"70 °C","Min.":"0 °C","Depth":"27.5 mm","P bus":"Yes; Separated","Width":"482.5 mm","title":"6ES7401-2TA01-0AA0","Height":"290 mm","CE mark":"Yes","UKCA mark":"Yes","FM approval":"Yes","KC approval":"Yes","UL approval":"Yes","description":"SIMATIC S7-400, rack CR2, central, 18 slots, 2 segments 2 redundant PS can be plugged in","Number of slots":"18; 2 segments with 8 or 10 slots","Weight, approx.":"4.1 kg","lifecycle_stage":"mature","Communication bus":"Yes; Throughout both segments","EAC (formerly Gost-R)":"Yes","RCM (formerly C-TICK)":"Yes"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1,009.65 – $2,436.00","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/7331f0d53da81170410fc7f8a91ba6cc.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=286569&mlfb=6ES7401-2TA01-0AA0"},"ai":{"faq":[{"question":"Will 6ES7401-2TA01-0AA0 drop into a panel specified for 6ES7400-1JA11-0AA1?","answer":"No, not without mechanical changes. The 6ES7400-1JA11-0AA1 is a 9-slot UR1 rack with a width of 257.5 mm, while the CR2 is 482.5 mm wide — nearly double. The mounting hole pattern, slot count, and backplane segmentation are different. You would need to re-drill the panel or use a different sub-panel."},{"question":"What compliance documentation does this rack carry?","answer":"It carries UL, CE, UKCA, FM, KC, EAC, RCM, and CCC approvals. That covers safety and EMC certification for most global markets. Siemens typically provides a Declaration of Conformity and UL file number upon request."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/6ES7401-2TA01-0AA0","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/6ES7401-2TA01-0AA0 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}}