{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"6AG1055-1FB00-2BY1","brand":"Siemens","brandSlug":"siemens","productSlug":"6AG1055-1FB00-2BY1","canonicalUrl":"https://aoctrl.com/siemens/6AG1055-1FB00-2BY1","factsUrl":"https://aoctrl.com/api/mcp/products/6AG1055-1FB00-2BY1","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIPLUS LOGO! DM8 230R expansion module, 6AG1055-1FB00-2BY1, 4 digital inputs / 4 relay outputs, 115–230 V AC/DC supply, conformal-coated spare-part variant rated -40 °C to +70 °C.","salesMarkdown":"The Siemens 6AG1055-1FB00-2BY1 is the SIPLUS spare-part variant of the LOGO! DM8 230R digital I/O expansion module, supplied with a conformal coating for harsher thermal and humidity exposure than the standard line. ## Thermal envelope and conformal coating — the headline SIPLUS delta For UL/cUL installations the ceiling drops to 55 °C — a real procurement detail, because a cabinet spec'd to the headline 70 °C will be rejected at UL inspection if it crosses 55 °C under UL file E120869. ## Output ratings and how they actually derate Each relay output is rated 5 A on a resistive load, with 3 A per relay above 55 °C and a 5 A / 10 A-all-four total budget under 15 s of inrush. On inductive loads the per-relay figure is 3 A dropping to 1 A above 55 °C, again with the 3 A / < 15 s inrush window — the derating curve is what governs a hot cabinet, not the 5 A headline. The module ships with no built-in short-circuit protection on the outputs, so external fusing sized to the load and the 10 A package budget is part of the wiring design. ## Installation envelope and EMC class IP20 finger-safe from the front, panel-mount only — the module is not rated for field exposure and assumes a closed cabinet.","metaTitle":"Siemens 6AG1055-1FB00-2BY1 LOGO! DM8 230R, -40…+70 °C","metaDescription":"SIPLUS LOGO! DM8 230R spare-part module, conformal coated, 4DI/4 relay out, 115/230 V AC/DC, active.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["PLCs (Programmable Logic Controllers)"],"specifications":{"Max.":"70 °C; = Tmax; 55 °C @ UL/cUL use","Min.":"-40 °C; = Tmin","Depth":"55 mm","Width":"36 mm; 2 DU","Height":"90 mm","115 V AC":"Yes","115 V DC":"Yes","230 V AC":"Yes","230 V DC":"Yes","Mounting":"on 35 mm DIN rail, 2 spacing units wide","FM approval":"No","UL approval":"Yes; File: E120869 // Tmax = 55 °C","CSA approval":"No","Marine approval":"No","lifecycle_stage":"current","Type of input voltage":"AC/DC","according to VDE 0631":"Yes","IP degree of protection":"IP20","Number of digital inputs":"4","Short-circuit protection":"No","Number of digital outputs":"4; Relays","With Inductive Load, Max.":"3 A; 1 A per relay @ > 55 °C; 3 A per relay @ > 55 °C & < 15 s","With Resistive Load, Max.":"5 A; 3 A per relay @ > 55 °C; 5 A < 15 s; 10 A all 4 relays in total","For Signal \"1\" Rated Value":"5 A","permissible range, lower limit (DC)":"100 V","permissible range, upper limit (DC)":"253 V","developed in accordance with IEC 61131":"Yes","Installation altitude above sea level, max.":"2 000 m","Limit class B, for use in residential areas":"Yes","Ambient air temperature-barometric pressure-altitude":"Tmin ... Tmax at 1 140 hPa ... 795 hPa (-1 000 m ... +2 000 m)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$743.01","priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/2eee7cfcfcdcb38b0735033ecfb3ad0f.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=293189&mlfb=6AG1055-1FB00-2BY1","alternativesUrl":"https://aoctrl.com/api/mcp/products/6AG1055-1FB00-2BY1/alternatives.json"},"ai":{"faq":[{"question":"What is the temperature ceiling on this module?","answer":"The headline maximum is 70 °C, with a 55 °C ceiling under UL/cUL use. Above 55 °C you also need to apply the relay derating (3 A per relay resistive, 1 A inductive)."},{"question":"What is the minimum operating temperature?","answer":"-40 °C, which is the SIPLUS floor — the standard LOGO! DM8 starts at 0 °C (or -20 °C on ES03 and later)."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/6AG1055-1FB00-2BY1","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/6AG1055-1FB00-2BY1 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}}