{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"6ES7331-7KB02-0AB0","brand":"Siemens","brandSlug":"siemens","productSlug":"6ES7331-7KB02-0AB0","canonicalUrl":"https://aoctrl.com/siemens/6ES7331-7KB02-0AB0","factsUrl":"https://aoctrl.com/api/mcp/products/6ES7331-7KB02-0AB0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens S7-300 analog input module, 6ES7331-7KB02-0AB0, 40 x 125 x 120 mm, supporting Pt100 RTD, thermocouple types E, J, K, N, voltage ranges including -10 V to +10 V, and current ranges including 4 to 20 mA.","salesMarkdown":"## Pt100 & Type K thermocouple on one module The 6ES7331-7KB02-0AB0 is an 8-channel analog input module for the S7-300 rack that accepts Pt100 RTD and Type K thermocouple inputs on the same module, along with voltage ranges from -10 V to +10 V and 1 V to 5 V, and current ranges including 4 to 20 mA and 0 to 20 mA. It does not support Cu 10 RTD inputs, which means if your loop uses copper RTDs, this module will not read them directly. ## Mixed-signal flexibility on the backplane The module handles thermocouple types E, J, K, and N, plus Pt100 and Ni100 RTDs, voltage inputs in four ranges, and current inputs in two ranges, so a single slot can serve temperature, pressure, and flow loops without a separate signal conditioner. Resistance measurement covers 0 to 150 ohms, 0 to 300 ohms, and 0 to 600 ohms, which covers most industrial RTD and potentiometer feedback applications. ## DIN-rail footprint and sourcing The module occupies a single S7-300 slot at 40 mm wide, 125 mm tall, and 120 mm deep, fitting the standard DIN-rail mounting pattern.","metaTitle":"Siemens 6ES7331-7KB02-0AB0 Analog Input Module","metaDescription":"Siemens 6ES7331-7KB02-0AB0 analog input module for S7-300. Supports Pt100 RTD, Type K thermocouple, voltage, current, and resistance inputs. 40 x 125 x 120 mm.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Analog Input Modules"],"specifications":{"Cu 10":"No","Depth":"120 mm","Width":"40 mm","title":"6ES7331-7KB02-0AB0","Height":"125 mm","Ni 100":"Yes","Ni 120":"No","Ni 200":"No","Ni 500":"No","Pt 100":"Yes","Pt 200":"No","Pt 500":"No","Type B":"No","Type E":"Yes","Type J":"Yes","Type K":"Yes","Type L":"No","Type N":"Yes","Type R":"No","Type S":"No","Type T":"No","Type U":"No","Current":"Yes","Ni 1000":"No","Pt 1000":"No","Voltage":"Yes","0 to +10 V":"No","0 to 20 mA":"Yes","1 V to 5 V":"Yes","LG-Ni 1000":"No","Resistance":"Yes","1 V to 10 V":"No","description":"SIMATIC S7-300, Analog input SM 331, isolated, 2 AI, Resolution 9/12/14 bits, U/I/thermocouple/resistor, alarm, diagnostics, 1x 20-pole, Removing/inserting with active backplane bus","-1 V to +1 V":"Yes","-5 V to +5 V":"Yes","Thermocouple":"Yes","0 To 150 Ohms":"Yes","0 To 300 Ohms":"Yes","0 To 600 Ohms":"Yes","4 mA to 20 mA":"Yes","-10 V to +10 V":"Yes","0 To 6000 Ohms":"No","Shielded, Max.":"200 m; 50 m at 80 mV and thermocouples","Parameterizable":"Yes","Weight, approx.":"250 g","lifecycle_stage":"eol_hot","-10 mA to +10 mA":"Yes","-2.5 V to +2.5 V":"Yes","-20 mA to +20 mA":"Yes","-50 mV to +50 mV":"No","-80 mV to +80 mV":"Yes","Diagnostic alarm":"Yes","Power loss, typ.":"1 W","Rated value (DC)":"24 V","For Thermocouples":"Type E, J, K, L, N","Limit value alarm":"Yes; Parameterizable, channel 0","-250 mV to +250 mV":"Yes","-3.2 mA to +3.2 mA":"Yes","-500 mV to +500 mV":"Yes","Between The Channels":"No","Diagnostics function":"Yes; Parameterizable","Group error SF (red)":"Yes","Isolation tested with":"500 V DC","Resistance thermometer":"Yes","For Voltage Measurement":"Yes","Number of analog inputs":"2","Type TXK/TXK(L) to GOST":"No","Required Front Connector":"20-pin","Input resistance (Ni 100)":"10 MΩ; Standard","Input resistance (Pt 100)":"10 kΩ; Standard","Input resistance (Type E)":"10 MΩ","Input resistance (Type K)":"10 MΩ","Input resistance (Type N)":"10 MΩ","Input resistance (type J)":"10 MΩ","Basic conversion time (ms)":"3 / 17 / 22 / 102 ms","For Resistance Thermometer":"Pt100 (standard, climatic range), Ni100 (standard, climatic range)","For resistance measurement":"1","Reverse polarity protection":"Yes","Input resistance (0 to 20 mA)":"25 Ω","Input resistance (1 V to 5 V)":"100 kΩ","Diagnostic information readable":"Yes","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.":"50 mA","Input resistance (0 to 150 ohms)":"10 MΩ","Input resistance (0 to 300 ohms)":"10 MΩ","Input resistance (0 to 600 ohms)":"10 MΩ","Input resistance (4 mA to 20 mA)":"25 Ω","Input resistance (-10 V to +10 V)":"100 kΩ","Integration time, parameterizable":"Yes; 2,5 / 16,67 / 20 / 100 ms","Internal Temperature Compensation":"Yes","Input resistance (-10 mA to +10 mA)":"25 Ω","Input resistance (-2.5 V to +2.5 V)":"100 kΩ","Input resistance (-20 mA to +20 mA)":"25 Ω","Input resistance (-80 mV to +80 mV)":"10 MΩ","Input resistance (-250 mV to +250 mV)":"10 MΩ","Input resistance (-3.2 mA to +3.2 mA)":"25 Ω","Input resistance (-500 mV to +500 mV)":"10 MΩ","Between The Channels And Backplane Bus":"Yes","Current, relative to input range, (+/-)":"0.5 %; 3.2 to 20 mA","Voltage, relative to input range, (+/-)":"0.6 %; ±0.6% (80 mV, 2.5 V to 10 V); ±0.4% (250 mV to 1 000 mV)","from load voltage L+ (without load), max.":"30 mA","For Definable Comparison Point Temperature":"Yes","Resistance, relative to input range, (+/-)":"0.5 %; 150, 300, 600 Ohm","For Current Measurement As 2-Wire Transducer":"Yes","For Current Measurement As 4-Wire Transducer":"Yes","Thermocouple, relative to input range, (+/-)":"0.7 %; Type E, N, J, K, L","For Resistance Measurement With Two-Wire Connection":"Yes","For Resistance Measurement With Four-Wire Connection":"Yes","Resolution with overrange (bit including sign), max.":"15 bit; Unipolar: 9/12/12/14 bit; bipolar: 9 bit + sign/12 bit + sign/12 bit + sign/14 bit + sign","For Resistance Measurement With Three-Wire Connection":"Yes","Resistance thermometer, relative to input range, (+/-)":"0.6 %; ±0.5% (Pt100/ Ni100), ±0.6% (Pt100 climate)","External Temperature Compensation With Compensations Socket":"Yes","Between The Channels And The Power Supply Of The Electronics":"Yes; Not for 2-wire transmitters","Constant measurement current for resistance-type transmitter, typ.":"1.67 mA","Interference voltage suppression for interference frequency f1 in Hz":"400 / 60 / 50 / 10 Hz","Permissible Input Current For Current Input (Destruction Limit), Max.":"40 mA","Permissible Input Voltage For Voltage Input (Destruction Limit), Max.":"20 V; continuous; 75 V for max. 1 s (mark to space ratio 1:20)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$215.00 – $439.28","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/69150edce525c64c111942893febcab0.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=203848&mlfb=6ES7331-7KB02-0AB0"},"ai":{"faq":[{"question":"How can I order 6ES7331-7KB02-0AB0 and check current pricing?","answer":"Submit an RFQ for the 6ES7331-7KB02-0AB0 through this listing."},{"question":"Does 6ES7331-7KB02-0AB0 support Pt100 RTD and Type K thermocouple?","answer":"Yes, the module supports Pt100 RTD and Type K thermocouple inputs, along with thermocouple types E, J, and N, and Ni100 RTD."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/6ES7331-7KB02-0AB0","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/6ES7331-7KB02-0AB0 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}}