{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"6ES7 321-1BH02-0AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"6ES7-321-1BH02-0AA0","canonicalUrl":"https://aoctrl.com/siemens/6ES7-321-1BH02-0AA0","factsUrl":"https://aoctrl.com/api/mcp/products/6ES7%20321-1BH02-0AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIMATIC S7-300 digital input module, 6ES7 321-1BH02-0AA0, 16 inputs 24 V DC, 3.5 W, end-of-life.","salesMarkdown":"## Electrical and physical fit The 6ES7 321-1BH02-0AA0: Each input is rated for a signal \"1\" voltage of 13 to 30 V DC, with a typical current draw of 7 mA. The permissible input voltage range is 20.4 to 28.8 V DC. Input delay is fixed (non-parameterizable) at 1.2 ms minimum and 4.8 ms maximum for both off-to-on and on-to-off transitions. Isolation between channels and the backplane is tested at 500 V DC via optocoupler. Cable length is limited to 1 000 m shielded or 600 m unshielded. The module supports 2-wire sensors with a permissible quiescent current up to 1.5 mA. Status indication per channel is provided by a green LED.","metaTitle":"Siemens 6ES7 321-1BH02-0AA0 Digital Input Module, 16 Inputs,","metaDescription":"Siemens 6ES7 321-1BH02-0AA0 SIMATIC S7-300 digital input module, 16 inputs 24 V DC, 3.5 W. End-of-life – sourced to order against RFQ. Contact for availability.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Digital Input Modules"],"specifications":{"title":"6ES7 321-1BH02-0AA0","power_w":"3.5","length_m":"1000","weight_g":"200","Current In":"0.01 A","Input Count":"16","description":"SIEMENS 6ES7 321-1BH02-0AA0 DIGITAL INPUT MODULE","input_delay":"1.2 ms “ 4.8 ms","isolation_type":"500 V DC","dimensions_text":"40 x 125 x 120 mm","lifecycle_stage":"eol_hot","supply_voltage_v":"24","connectable_encoders":"2-wire sensor"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$70.00","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/45ea4fb3b4ee74c0053ec07e3c98cfeb.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is 6ES7 321-1BH02-0AA0's listed power consumption?","answer":"The module draws 3.5 W from the backplane bus (5 V DC), with a maximum current draw of 10 mA from the 5 V supply."},{"question":"What is the maximum cable length for this input module?","answer":"Shielded cable up to 1 000 m is allowed; unshielded cable is limited to 600 m."},{"question":"Will 6ES7 321-1BH02-0AA0 drop into a panel specified for 6ES7321-1BH02-0AA0 without rewiring?","answer":"Yes, the alternate MPN 6ES7321-1BH02-0AA0 refers to the same product. The module is identical in form, fit, and function."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/6ES7-321-1BH02-0AA0","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/6ES7-321-1BH02-0AA0 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:51:03.652Z","lastPublished":"2026-08-11T15:51:03.652Z","indexable":true}}