{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"6GK7277-1AA00-0AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"6GK7277-1AA00-0AA0","canonicalUrl":"https://aoctrl.com/siemens/6GK7277-1AA00-0AA0","factsUrl":"https://aoctrl.com/api/mcp/products/6GK7277-1AA00-0AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIMATIC S7-1200 device design, CSM 1277 Compact Switch Module, unmanaged, 10/100 Mbit/s, 45 x 100 x 75 mm, IP20, DC 19.2-28.8 V, 0.07 A, 1.6 W.","salesMarkdown":"## Panel fit and S7-1200 integration The 6GK7277-1AA00-0AA0: The CSM 1277 is designed as a SIMATIC S7-1200 device — same 45 mm width, 100 mm height, 75 mm depth, and snaps onto a 35 mm top-hat DIN rail alongside the CPU and I/O modules. No separate bracket or backplane adapter needed; it shares the rail and the enclosure layout. Power comes from a 3-pole terminal block accepting 19.2 to 28.8 V DC. The module draws only 0.07 A maximum — that's 1.6 W heat dissipation, negligible in a crowded cabinet. No external power supply required beyond the 24 V bus already feeding the rack. IP20 rated, so it lives inside a sealed enclosure. ## Unmanaged switch, no surprises This is an unmanaged switch — no web interface, no SNMP, no VLAN configuration. It forwards frames at line rate on two ports: 10 Mbit/s and 100 Mbit/s, auto-negotiating. If your application requires managed features (port mirroring, redundancy, security policies), this is not the part. The MTBF is listed at 273 years — a reliability figure that reflects the simple, no-moving-parts design. For a wind-turbine nacelle or a conveyor line where an up-tower swap costs a full day, that number matters. ## Hazardous-area and marine approvals Carries ATEX II 3 G Ex nA II T4 (KEMA 08 ATEX 0003 X) for Zone 2 gas groups, plus FM3611 Class 1 Division 2 approval. Also holds marine type approvals from DNV, NK, LRS, and BV — so it passes for offshore substations and shipboard automation. EMC compliance to EN 61000-6-2 (immunity) and EN 61000-6-4 (emission). Safety listing per UL 508 and CSA C22.2 No. 142.","metaTitle":"Siemens 6GK7277-1AA00-0AA0 CSM 1277, unmanaged switch","metaDescription":"Siemens CSM 1277 unmanaged switch for SIMATIC S7-1200. Current lifecycle. 10/100 Mbit/s, 0.07 A draw, DIN-rail mount. Sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["PLC Communication Modules"],"specifications":{"MTBF":"273 y","Depth":"75 mm","Width":"45 mm","C-Tick":"Yes","Design":"SIMATIC S7-1200 device design","Height":"100 mm","for FM":"FM3611: Class 1, Divison 2, Group A, B, C, D / T.., CL.1, Zone 2, GP. IIC, T.. Ta","KC approval":"No","For Multimode":"0","Transfer Rate":"10 Mbit/s, 100 Mbit/s","Wall Mounting":"Yes","During Storage":"-40 ... +70 °C","lifecycle_stage":"current","During Operation":"0 ... 60 °C","During Transport":"-40 ... +70 °C","For Power Supply":"3-pole terminal block","Multiport Mirroring":"No","protection class IP":"IP20","S7-300 rail mounting":"No","Security Information":"Siemens provides products and solutions with industrial security functions that support the secure operation of plants, solutions, machines, equipment and/or networks. They are important components in a holistic industrial security concept. With this in mind, Siemens’ products and solutions undergo continuous development. Siemens recommends strongly that you regularly check for product updates. For the secure operation of Siemens products and solutions, it is necessary to take suitable preventive action(e.g. cell protection concept) and integrate each component into a holistic, state-of-the-art industrial security concept. Third-party products that may be in use should also be considered. For more information about industrial security, visit http://www.siemens.com/industrialsecurity. To stay informed about product updates as they occur, sign up for a product-specific newsletter. For more information, visit http://support.automation.siemens.com. (V3.4)","for single mode (LD)":"0","S7-1500 rail mounting":"No","Germanische Lloyd (GL)":"No","Det Norske Veritas (DNV)":"Yes","For Emitted Interference":"EN 61000-6-4:2007","Nippon Kaiji Kyokai (NK)":"Yes","according to IEC 81346-2":"KF","For Interference Immunity":"EN 61000-6-2:2005","Polski Rejestr Statkow (PRS)":"No","for safety / from CSA and UL":"UL 508, CSA C22.2 No. 142","Standard / For Hazardous Zone":"EN 600079-15:2005, EN 600079-0:2006, II 3 G Ex nA II T4, KEMA 08 ATEX 0003 X","according to IEC 81346-2:2019":"KFE","Consumed Current / 1 / Maximum":"0.07 A","35 mm top hat DIN rail mounting":"Yes","Supply Voltage / 1 / Rated Value":"19.2 ... 28.8 V","power loss [W] / 1 / rated value":"1.6 W","Lloyds Register of Shipping (LRS)":"Yes","Product Function / Switch-Managed":"No","French marine classification society (BV)":"Yes","Type Of Voltage / 1 / Of The Supply Voltage":"DC","For Network Components Or Terminal Equipment":"4","Royal Institution of Naval Architects (RINA)":"No","American Bureau of Shipping Europe Ltd. (ABS)":"Yes"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$78.74","priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/d38c5f3c4b7155ce29428b9bd2e2e31c.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=280270&mlfb=6GK7277-1AA00-0AA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/6GK7277-1AA00-0AA0/alternatives.json"},"ai":{"faq":[{"question":"Is 6GK7277-1AA00-0AA0 compatible with SIMATIC S7-1200?","answer":"Yes. The module is designed as a SIMATIC S7-1200 device — same form factor, same DIN-rail mounting, same 24 V DC supply. It integrates directly into the S7-1200 rack layout without adapters."},{"question":"Does 6GK7277-1AA00-0AA0 require an external power supply?","answer":"It needs a 19.2 to 28.8 V DC supply via the 3-pole terminal block. Typical 24 V DC panel bus is sufficient; the module draws only 0.07 A maximum."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/6GK7277-1AA00-0AA0","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/6GK7277-1AA00-0AA0 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}}