{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"6ES7331-1KF00-0AB0","brand":"Siemens","brandSlug":"siemens","productSlug":"6ES7331-1KF00-0AB0","canonicalUrl":"https://aoctrl.com/siemens/6ES7331-1KF00-0AB0","factsUrl":"https://aoctrl.com/api/mcp/products/6ES7331-1KF00-0AB0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIMATIC S7-300 SM 331 analog input module, 8 AI, order code 6ES7331-1KF00-0AB0, for Pt100, voltage, current, resistance, 40-pin front connector required.","salesMarkdown":"## 8 analog inputs, universal range The Siemens 6ES7331-1KF00-0AB0 SM 331 analog input module provides 8 analog inputs configurable for Pt100 resistance thermometers (standard/climate), voltage ranges from -10 V to +10 V down to -50 mV to +50 mV, and current ranges including 0 to 20 mA, 4 to 20 mA, and -20 mA to +20 mA. It also handles resistance measurements from 0 to 600 ohms and 0 to 6000 ohms, making it a versatile choice for mixed-signal field wiring in a single slot. ## Integration and wiring constraints The module occupies a 40 mm wide slot in the S7-300 DIN-rail rack and requires a 40-pin front connector (sold separately) for field wiring. Shielded cable runs are limited to 200 m for most signals, but drop to 50 m for the 50 mV range — a real constraint when pulling low-level thermocouple or mV signals across a plant floor. Power draw from the backplane bus is 90 mA at 5 V DC, with a typical power loss of 0.4 W.","metaTitle":"Siemens 6ES7331-1KF00-0AB0 SM 331 Analog Input Module, 8 AI","metaDescription":"Siemens SM 331 analog input module, 8 AI, for Pt100, voltage, current, resistance. EOL hot — sourced to order. 40-pin front connector required.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Analog Input Modules"],"specifications":{"Depth":"117 mm","Width":"40 mm","Height":"125 mm","Pt 100":"Yes; Standard/climate","Current":"Yes","Voltage":"Yes","0 to +10 V":"Yes","0 to 20 mA":"Yes","1 V to 5 V":"Yes","Resistance":"Yes","-1 V to +1 V":"Yes","-5 V to +5 V":"Yes","0 To 600 Ohms":"Yes","4 mA to 20 mA":"Yes","-10 V to +10 V":"Yes","0 To 6000 Ohms":"Yes","Shielded, Max.":"200 m; 50 m at 50 mV","Parameterizable":"No","Weight, approx.":"250 g","lifecycle_stage":"eol_hot","-20 mA to +20 mA":"Yes","-50 mV to +50 mV":"Yes","Diagnostic alarm":"No","Power loss, typ.":"0.4 W","Limit value alarm":"No","-500 mV to +500 mV":"Yes","Integration time (ms)":"16,67 / 20 ms","Isolation tested with":"600 V DC","Resistance thermometer":"Yes","Number of analog inputs":"8","Required Front Connector":"40-pin","Input resistance (Pt 100)":"10 MΩ","For Resistance Thermometer":"Pt100 (standard/climate)","For resistance measurement":"8","Input resistance (0 to 10 V)":"100 kΩ","Input resistance (0 to 20 mA)":"50 Ω","Input resistance (1 V to 5 V)":"100 kΩ","Input resistance (-1 V to +1 V)":"10 MΩ","Input resistance (-5 V to +5 V)":"100 kΩ","from backplane bus 5 V DC, max.":"90 mA","Input resistance (0 to 600 ohms)":"10 MΩ","Input resistance (4 mA to 20 mA)":"50 Ω","Input resistance (-10 V to +10 V)":"100 kΩ","Input resistance (0 to 6000 ohms)":"10 MΩ","Input resistance (-20 mA to +20 mA)":"50 Ω","Input resistance (-50 mV to +50 mV)":"10 MΩ","Input resistance (-500 mV to +500 mV)":"10 MΩ","Between The Channels And Backplane Bus":"Yes","Current, relative to input range, (+/-)":"0.4 %","Voltage, relative to input range, (+/-)":"0.4 %","For Current Measurement As 2-Wire Transducer":"Yes; with external supply","For Current Measurement As 4-Wire Transducer":"Yes","For Resistance Measurement With Two-Wire Connection":"Yes","For Resistance Measurement With Four-Wire Connection":"Yes","Resolution with overrange (bit including sign), max.":"13 bit; Unipolar: 13/13 bit; bipolar: 12 bit + sign/12 bit + sign","For Resistance Measurement With Three-Wire Connection":"Yes; with 3-wire compensation","Resistance thermometer, relative to input range, (+/-)":"0.4 %; ±1 K","Interference voltage suppression for interference frequency f1 in Hz":"50 / 60 Hz","Permissible Input Current For Current Input (Destruction Limit), Max.":"40 mA; Protection available against destruction","Permissible Input Voltage For Voltage Input (Destruction Limit), Max.":"30 V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$159.33","priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=416191&mlfb=6ES7331-1KF00-0AB0","alternativesUrl":"https://aoctrl.com/api/mcp/products/6ES7331-1KF00-0AB0/alternatives.json"},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/6ES7331-1KF00-0AB0","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/6ES7331-1KF00-0AB0 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}}