{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"6ES7331-7TB10-0AB0","brand":"Siemens","brandSlug":"siemens","productSlug":"6ES7331-7TB10-0AB0","canonicalUrl":"https://aoctrl.com/siemens/6ES7331-7TB10-0AB0","factsUrl":"https://aoctrl.com/api/mcp/products/6ES7331-7TB10-0AB0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIMATIC S7-300 analog input module, 6ES7331-7TB10-0AB0, 2 AI, 4-20 mA / 0-20 mA, Ex(i) protection, ATEX II 3 G, FM Class I Div 2, 24 V DC, EOL hot stage.","salesMarkdown":"## Hazardous-Area Analog Input Module — Ex(i) Rated The Siemens 6ES7331-7TB10-0AB0 is a 2-channel analog input module for the SIMATIC S7-300 family, designed for intrinsically safe (Ex(i)) signal acquisition in hazardous locations. It carries ATEX II 3 G (2) GD Ex nA [ib Gb] [ib IIIC Db] IIC T4 Gc and FM Class I, Division 2, Groups A, B, C, D T4 / Class I, Zone 2, Group IIC T4 markings — confirming it for Zone 2 gas and Division 2 classified areas per IEC 60079 and NEC 500. The module accepts 4-20 mA and 0-20 mA signals, with a 50 Ω input resistance and short-circuit proof output limited to approximately 30 mA. ## Integration and Wiring Constraints The module occupies a 40 mm wide slot in the S7-300 DIN rail assembly, with a 125 mm height and 120 mm depth. It requires a 20-pin front connector (sold separately). The maximum shielded cable length is 400 m. Power draw is 4.5 W typical from the 24 V DC backplane bus. The sigma-delta measurement principle supports integration times of 2.5 / 16.67 / 20 / 100 ms, selectable per channel. ## Diagnostics and Approvals Diagnostics are parameterizable, with a group error SF (red) LED, per-channel fault indicator F (red), overrange red LED, and a green HART communication active LED. Channel-to-channel isolation is 2 500 V DC; between inputs the permitted potential difference (UCM) is 60 V DC / 30 V AC. Approvals include CE, UL, KC, EAC, RCM, and ATEX/FM for hazardous locations. Operating range is 0 °C to 60 °C.","metaTitle":"Siemens 6ES7331-7TB10-0AB0 Analog Input Module, Ex(i), 2 AI","metaDescription":"Siemens 6ES7331-7TB10-0AB0 SIMATIC S7-300 analog input module, 2 channels, 4-20 mA / 0-20 mA, ATEX II 3 G Ex nA IIC T4 Gc, FM Class I Div 2. EOL hot stage.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Analog Input Modules"],"specifications":{"Max.":"60 °C","Min.":"0 °C","Depth":"120 mm","Width":"40 mm","Height":"125 mm","CE mark":"Yes","Overrange":"Yes; red LED, signal","0 to 20 mA":"Yes","FM marking":"Class I, Division 2, Group A, B, C, D T4; Class I, Zone 2, Group IIC T4","FM approval":"Yes","KC approval":"Yes","UL approval":"Yes","ATEX marking":"ATEX II 3 G (2) GD Ex nA [ib Gb] [ib IIIC Db] IIC T4 Gc","4 mA to 20 mA":"Yes","Shielded, Max.":"400 m","Weight, approx.":"260 g","lifecycle_stage":"eol_hot","Between channels":"2 500 V DC","Diagnostic alarm":"Yes; Parameterizable","Power loss, typ.":"4.5 W","Rated value (DC)":"24 V","Limit value alarm":"Yes; Parameterizable, channels 0 and 1","Short-Circuit Proof":"Yes; approx. 30 mA","Between The Channels":"Yes","Diagnostics function":"Yes; Parameterizable","Group error SF (red)":"Yes","EAC (formerly Gost-R)":"Yes","Integration time (ms)":"2,5 / 16,67 / 20 / 100 ms","Measurement principle":"Sigma Delta","RCM (formerly C-TICK)":"Yes","Number of analog inputs":"2","Po (power output), max.":"511 mW","Required Front Connector":"1x 20-pin","between the inputs (UCM)":"60 V DC/30 V AC permitted potential difference (Viso) of signals from hazardous areas","HART communication active":"Yes; green LED (H)","Uo (no-load voltage), max.":"26 V","Module for Ex(i) protection":"Yes","Reverse polarity protection":"Yes","Input resistance (0 to 20 mA)":"50 Ω","Channel fault indicator F (red)":"Yes","from backplane bus 5 V DC, max.":"100 mA","Input resistance (4 mA to 20 mA)":"50 Ω","Io (short-circuit current), max.":"96.1 mA","Integration time, parameterizable":"Yes","Load voltage L+ against backplane bus":"500 V DC","Between The Channels And Backplane Bus":"Yes","Wire-break in signal transmitter cable":"Yes; red LED, signal","Current, relative to input range, (+/-)":"0.1 %; From 0/4 to 20 mA","Co (permissible external capacity), max.":"62 nF","Short-circuit of the signal encoder cable":"Yes; red LED, signal","from load voltage L+ (without load), max.":"180 mA","Lo (permissible external inductivity), max.":"3 mH","For Current Measurement As 2-Wire Transducer":"Yes","For Current Measurement As 4-Wire Transducer":"Yes","Channels against backplane bus and load voltage L+":"2 500 V DC","Product Function / Supply Voltage For Transmitters":"Yes","Resolution with overrange (bit including sign), max.":"16 bit; 10 bit to 15 bit + sign","Basic conversion time, including integration time (ms)":"2.5 / 16.67 / 20 / 100 (1 channel enabled); 7.5 / 50 / 60 / 300 (2 channels enabled)","Um (voltage at non-intrinsically safe connecting terminals), max.":"250 V; DC","Interference voltage suppression for interference frequency f1 in Hz":"10 / 50 / 60 / 400 Hz","Permissible Input Current For Current Input (Destruction Limit), Max.":"40 mA"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/9141c4cace171894cf1601279d993caa.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=422859&mlfb=6ES7331-7TB10-0AB0","alternativesUrl":"https://aoctrl.com/api/mcp/products/6ES7331-7TB10-0AB0/alternatives.json"},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/6ES7331-7TB10-0AB0","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/6ES7331-7TB10-0AB0 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}}