{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"6ES72121HG500XB0","brand":"Siemens","brandSlug":"siemens","productSlug":"6ES72121HG500XB0","canonicalUrl":"https://aoctrl.com/siemens/6ES72121HG500XB0","factsUrl":"https://aoctrl.com/api/mcp/products/6ES72121HG500XB0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens S7-1200 CPU 1212C, order code 6ES72121HG500XB0, relay outputs, Ethernet, 24 V DC, DIN rail mounted.","salesMarkdown":"## CPU 1212C with relay outputs The Siemens 6ES72121HG500XB0 is a current-production CPU 1212C with relay outputs and an Ethernet interface, DIN-rail mount, 24 V DC supply. ## Mount and wire in the field DIN rail clip, 24 V DC input. Relay outputs are dry contacts—no sequencing needed with the load side. Ethernet autosenses, so no crossover cable required. For a quick panel swap, pull the old CPU, snap this one on, re-terminate the 24V and relay commons. No shop, no crane, let's go.","metaTitle":"Siemens 6ES72121HG500XB0 PLC CPU, Relay Output, Ethernet","metaDescription":"Siemens S7-1200 CPU 1212C with relay outputs, Ethernet interface, 24V DC supply. Active production, DIN rail mount. RFQ for BOM fill.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":[],"specifications":{"title":"6ES72121HG500XB0","Output Type":"Relay Output","description":"Programmable (PLC, PAC)","Interface Type":"Ethernet","Supply Voltage":"24 V DC","lifecycle_stage":"current","Mounting Fastener":"DIN Rail","Is Profinet Io Device":"false","Is Profinet Io Controller":"false"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/4231e5381532b90f2eac950d162965f8.pdf","sourceUrl":null,"alternativesUrl":"https://aoctrl.com/api/mcp/products/6ES72121HG500XB0/alternatives.json"},"ai":{"faq":[{"question":"What is the closest functional second-source — 6ES7212-1HG50-0XB0?","answer":"The alternate order code 6ES7212-1HG50-0XB0 is functionally identical; it drops into the same panel without rewiring."},{"question":"What is 6ES72121HG500XB0's listed output type?","answer":"The output type is relay output, providing galvanic isolation for switching field loads."},{"question":"What is its interface type?","answer":"It has an Ethernet interface for programming and communication, but it is not a Profinet IO controller or device."},{"question":"Will 6ES72121HG500XB0 drop into a panel specified around 6ES7212-1HG50-0XB0 without rewiring?","answer":"Yes, the two order codes are functionally identical — same footprint, wiring, and relay outputs. No rewiring needed."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/6ES72121HG500XB0","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/6ES72121HG500XB0 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}}