{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"6ED1055-1CB00-0BA2","brand":"Siemens","brandSlug":"siemens","productSlug":"6ED1055-1CB00-0BA2","canonicalUrl":"https://aoctrl.com/siemens/6ED1055-1CB00-0BA2","factsUrl":"https://aoctrl.com/api/mcp/products/6ED1055-1CB00-0BA2","rawCanonicalId":null},"summary":{"shortDescription":"Siemens LOGO! DM8 24 expansion module, 6ED1055-1CB00-0BA2, 4 digital inputs / 4 transistor outputs, 24 V DC supply, 35 mm DIN rail mount, IP20.","salesMarkdown":"## Module identity and I/O map The Siemens 6ED1055-1CB00-0BA2 is a LOGO! DM8 24 expansion module for the LOGO! 8 logic module family. It provides 4 digital inputs and 4 digital outputs in a compact 35.5 mm wide housing that snaps onto a standard 35 mm DIN rail, occupying 2 spacing units. The 4 outputs are transistor type, rated for 0.3 A per channel at signal \"1\", with a maximum switching frequency of 10 Hz into resistive loads and 0.5 Hz into inductive loads. This means the module is best suited for driving small contactors, indicator lamps, or solenoid valves at moderate cycle rates — not for high-speed pulse trains or heavy motor contactors. Input thresholds are defined for 24 V DC logic: signal \"0\" below 5 V DC, signal \"1\" above 12 V DC, with a typical input current of 2.1 mA at signal \"1\". The permissible supply range is 20.4 V to 28.8 V DC, so it holds regulation through a sagging 24 V bus. ## Switching performance and protection Transition times are symmetrical: 1.5 ms max for both 0-to-1 and 1-to-0 edges. That gives a practical minimum pulse width around 3 ms, which is fine for most discrete control signals but not for encoder pulse counting. The module includes short-circuit protection on the outputs, so a downstream wiring fault won't take out the output transistor — useful when commissioning in a panel where a stray wire strand might short to ground. Maximum quiescent current at signal \"0\" is 0.88 mA, which keeps the input off-state leakage low enough to avoid false triggering on long cable runs where capacitive coupling might otherwise hold a line above the 5 V threshold. ## Environmental limits and approvals Rated for 0 °C to 55 °C ambient — the standard industrial range for a panel-mounted logic module. Units with firmware ES03 and higher extend the low end to -20 °C, which matters for cold storage or unheated enclosure applications. Carries UL, CSA, CE, FM, and marine approvals, so it's accepted in North American, European, and shipboard panels. Developed in accordance with IEC 61131 and VDE 0631, and rated limit class B for residential interference limits.","metaTitle":"Siemens 6ED1055-1CB00-0BA2 LOGO! DM8 24, 4 DI / 4 DO, 24 V D","metaDescription":"Siemens 6ED1055-1CB00-0BA2 LOGO! DM8 24 expansion module, 4 digital inputs & 4 transistor outputs, 24 V DC, active production, UL/CSA/CE/FM/marine approved.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["PLC I/O & Expansion Modules"],"specifications":{"Max.":"55 °C","Min.":"0 °C; ES03 and higher: -20 °C","Depth":"58 mm","Width":"35.5 mm","Height":"90 mm","24 V DC":"Yes","CE mark":"Yes","Mounting":"on 35 mm DIN rail, 2 spacing units wide","FM approval":"Yes","UL approval":"Yes","CSA approval":"Yes","For Uprating":"No","For Signal \"0\"":"< 5 V DC","For Signal \"1\"":"> 12 V DC","Marine approval":"Yes","lifecycle_stage":"current","At \"0\" To \"1\", Max.":"1.5 ms","At \"1\" To \"0\", Max.":"1.5 ms","For Signal \"1\", Typ.":"2.1 mA","Type of input voltage":"DC","according to VDE 0631":"Yes","IP degree of protection":"IP20","Number of digital inputs":"4","Short-circuit protection":"Yes","Number of digital outputs":"4","With Inductive Load, Max.":"0.5 Hz","With Resistive Load, Max.":"10 Hz","For Signal \"1\" Rated Value":"0.3 A","permissible range, lower limit (DC)":"20.4 V","permissible range, upper limit (DC)":"28.8 V","developed in accordance with IEC 61131":"Yes","Limit class B, for use in residential areas":"Yes","For Signal \"0\", Max. (Permissible Quiescent Current)":"0.88 mA"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$48.26 – $120.30","priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/bd6b427f65a9a1c756734448f93385cf.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=157228&mlfb=6ED1055-1CB00-0BA2","alternativesUrl":"https://aoctrl.com/api/mcp/products/6ED1055-1CB00-0BA2/alternatives.json"},"ai":{"faq":[{"question":"What is the closest functional alternative to 6ED1055-1CB00-0BA2?","answer":"The 6ED1052-1MD00-0BA6 is a LOGO! 8 base module with a display, 8 digital inputs (4 usable as analog 0-10 V), and 4 relay outputs rated 10 A resistive / 3 A inductive. It is wider at 72 mm (4 spacing units) and includes a power reserve of 80 hours. The decision between them is whether you need the display and relay outputs of the base module or the compact transistor-output expansion module."},{"question":"What is the operating temperature range for 6ED1055-1CB00-0BA2?","answer":"The standard range is 0 °C to 55 °C. For units with firmware ES03 or higher, the minimum extends to -20 °C."},{"question":"Will 6ED1055-1CB00-0BA2 drop into a panel designed for 6ED1052-1MD00-0BA6 without rewiring?","answer":"No. The 6ED1055-1CB00-0BA2 is an expansion module that connects to the LOGO! 8 bus via the side connector. The 6ED1052-1MD00-0BA6 is a base module with its own power supply and display. They serve different roles in the system architecture and are not footprint-compatible."},{"question":"What compliance documentation is available for 6ED1055-1CB00-0BA2?","answer":"The module carries UL, CSA, CE, FM, and marine approvals. It is developed in accordance with IEC 61131 and VDE 0631, and meets limit class B for residential interference."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/6ED1055-1CB00-0BA2","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/6ED1055-1CB00-0BA2 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}}