{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"6ES72121HF500XB0","brand":"Siemens","brandSlug":"siemens","productSlug":"6ES72121HF500XB0","canonicalUrl":"https://aoctrl.com/siemens/6ES72121HF500XB0","factsUrl":"https://aoctrl.com/api/mcp/products/6ES72121HF500XB0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens S7-1200, fail-safe CPU, order code 6ES72121HF500XB0, relay outputs, screw terminals, Ethernet, 24 V DC, IP20.","salesMarkdown":"Siemens S7-1200, fail-safe CPU, order code 6ES72121HF500XB0, relay outputs, screw terminals, Ethernet, 24 V DC, IP20.","metaTitle":"Siemens 6ES72121HF500XB0 S7-1200 CPU, Relay Output, 24VDC","metaDescription":"The Siemens 6ES72121HF500XB0 is a current-production S7-1200 fail-safe CPU with relay outputs, screw terminals, Ethernet, 24V DC. IP20. Sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":[],"specifications":{"title":"6ES72121HF500XB0","IP Rating":"IP20","Output Type":"Relay Output","description":"Programmable (PLC, PAC)","Terminal Type":"Screw terminal","Interface Type":"Ethernet","Supply Voltage":"24 V DC","lifecycle_stage":"current","Mounting Fastener":"DIN Rail"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/9e3ea5c058bf430065a2fff58a477f32.pdf","sourceUrl":null,"alternativesUrl":"https://aoctrl.com/api/mcp/products/6ES72121HF500XB0/alternatives.json"},"ai":{"faq":[{"question":"What is the closest functional second-source – the 6ES7212-1HF50-0XB0?","answer":"The 6ES7212-1HF50-0XB0 is a sibling in the same fail-safe CPU family. Both share relay outputs, screw terminals, Ethernet, and DIN-rail mounting. The exact functional equivalence depends on firmware version; verify compatibility in your project."},{"question":"What is the IP rating of the 6ES72121HF500XB0?","answer":"The listed IP rating is IP20, suitable for enclosure installation."},{"question":"What is the output type of the 6ES72121HF500XB0?","answer":"The output type is relay output, rated for switching inductive loads."},{"question":"Will the 6ES72121HF500XB0 drop into a panel specified around the 6ES7212-1HF50-0XB0 without rewiring?","answer":"Given shared screw-terminal type and DIN-rail mounting, the physical fit is identical. However, confirm the I/O assignment and firmware version before using as a drop-in replacement."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/6ES72121HF500XB0","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/6ES72121HF500XB0 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-09-02T08:21:01.794Z","lastPublished":"2026-09-02T08:21:01.794Z","indexable":true}}