{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"SR3XT43BD","brand":"Schneider Electric","brandSlug":"schneider","productSlug":"SR3XT43BD","canonicalUrl":"https://aoctrl.com/schneider/SR3XT43BD","factsUrl":"https://aoctrl.com/api/mcp/products/SR3XT43BD","rawCanonicalId":null},"summary":{"shortDescription":"Schneider Electric Zelio Logic analogue I/O extension module, 2 inputs (0...10 V, 0...20 mA, Pt100), 2 outputs (0...10 V), 10-bit resolution, screw terminals, IP20/IP40.","salesMarkdown":"## Analogue I/O for Zelio Logic The SR3XT43BD is a Schneider Electric Zelio Logic analogue I/O extension module. It adds two analogue inputs and two analogue outputs to a Zelio Logic smart relay base unit. The inputs accept 0–10 V, 0–20 mA, or Pt100 three-wire probes over a –25…125 °C range; the outputs drive 0–10 V at 10 mA max load. Both input and output channels resolve to 10 bits across their respective ranges, with ±1 % of full-scale accuracy at 25 °C (drifts to ±1 % at 55 °C on the input, same on the output). Conversion time tracks the smart relay cycle, not a standalone ADC period. Input impedance sits at 18 kΩ on the voltage channel and 247 Ω on the current channel — low enough for passive 0–20 mA transmitters with a compliant voltage of < 5 V. The Pt100 input uses three-wire compensation; keep the cable run under 10 m. The 10-bit resolution on a 0–10 V input gives roughly 9.8 mV per step, adequate for most process signals. Output short-circuit protection is included, so a miswired 4–20 mA loop won't blow the analog output stage immediately. Screw terminals accept 0.25–2.5 mm² solid or 1 x 0.25–1 x 2.5 mm² flexible with ferrule. Tighten to 0.5 N·m. The front panel carries IP40 protection; the terminal block area is IP20. The module is rated for pollution degree 2 per IEC 61131-2, covering typical control cabinet environments. ## Compliance and environment The SR3XT43BD carries an active lifecycle status. It is compliant with IEC 61000-4-2/3/4/5/6/11/12 (EMC immunity levels 3), IEC 60068-2-6 (vibration) and IEC 60068-2-27 (shock), plus the EMC directives for emission and immunity per IEC 61000-6-2, -3, -4 and IEC 61131-2 zone B. Radiated/conducted emissions meet Class B of IEC 55022-11 Group 1. Operating temperature range is –20…55 °C for the electronics (–20…40 °C for full spec per IEC 60068-2-1/2). Storage –40…70 °C, relative humidity up to 95 % non-condensing.","metaTitle":"SR3XT43BD Zelio Logic Analogue I/O Extension, 2 In/2 Out, 10","metaDescription":"Schneider Electric SR3XT43BD analogue I/O extension module for Zelio Logic smart relays. 2 inputs (0-10V, 0-20mA, Pt100) and 2 outputs (0-10V), 10-bit resolution. Active production","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":[],"specifications":{"Category":"US1000I22378","LSB value":"0.15 °C, - 25...125 °C analogue input circuit 20 µA, 0...20 mA analogue input circuit 9.8 mV, 0...10 V analogue input circuit 9.8 mV, 0...10 V analogue output","Load type":"Resistive analogue output","Standards":"IEC 61000-4-12 IEC 61000-4-5 IEC 61000-4-3 IEC 61000-4-4 level 3 IEC 61000-4-6 level 3 IEC 61000-4-2 level 3 IEC 60068-2-6 Fc IEC 61000-4-11 IEC 60068-2-27 Ea","Conversion time":"Smart relay cycle time analogue input circuit Smart relay cycle time analogue output","Input impedance":"18 kOhm 0...10 V analogue input circuit 247 Ohm 0...20 mA analogue input circuit","Repeat accuracy":"< +/- 0.3 °C - 25...125 °C 77 °F (25 °C) analogue input circuit <= +/- 1 % 0...20 mA 77 °F (25 °C) analogue input circuit","lifecycle_stage":"current","Conversion error":"+/- 1 % of the full scale value 0...10 V 77 °F (25 °C))analogue output +/- 1 % of the full scale value 0...10 V 131 °F (55 °C))analogue output +/- 1 % 0...10 V 77 °F (25 °C))analogue input circuit +/- 1 % 0...10 V 131 °F (55 °C))analogue input circuit +/- 1 % 0...20 mA 77 °F (25 °C))analogue input circuit +/- 1 % 0...20 mA 131 °F (55 °C))analogue input circuit +/- 1.5 °C - 25...125 °C 77 °F (25 °C))analogue input circuit +/- 1.5 °C - 25...125 °C 131 °F (55 °C))analogue input circuit","Pollution degree":"2 IEC 61131-2","Range of Product":"Zelio Logic","Relative Humidity":"95 % without condensation or dripping water","Tightening Torque":"4.4 lbf.in (0.5 N.m)","Operating altitude":"6561.68 ft (2000 m)","Operating distance":"10 m with screened cable analogue input circuit 10 m with screened cable analogue output","Analogue Input Type":"Common mode","Analogue input range":"0...10 V 0...20 mA -25...125 °C","Maximum load current":"10 mA analogue output","Analogue input number":"2","Analogue output range":"0...10 V","Nbr. of units in pkg.":"1","Analogue output number":"2","Temperature probe type":"Pt 100, 3-wire IEC 751","Connections - terminals":"Screw terminals, 1 x 0.25...1 x 2.5 mm² AWG 24...AWG 14) semi-solid Screw terminals, 1 x 0.25...1 x 2.5 mm² AWG 24...AWG 14) solid Screw terminals, 2 x 0.25...2 x 1.5 mm² AWG 23...AWG 16) solid Screw terminals, 1 x 0.25...1 x 2.5 mm² AWG 24...AWG 14) flexible with cable end Screw terminals, 2 x 0.25...2 x 0.75 mm² AWG 24...AWG 18) flexible with cable end","IP degree of protection":"IP20 IEC 60529 terminal block) IP40 IEC 60529 front panel)","Short-circuit protection":"With analogue output","Analogue input resolution":"10 bits on the input range","Product or Component Type":"Analogue I/O extension module","Analogue output resolution":"10 bits on the output range","Maximum altitude transport":"10000 ft (3048 m)","Maximum permissible voltage":"30 V analogue input circuit","Reverse polarity protection":"Analogue input circuit with","Environmental characteristic":"EMC directive conforming to IEC 61000-6-2 EMC directive conforming to IEC 61000-6-3 EMC directive conforming to IEC 61000-6-4 EMC directive conforming to IEC 61131-2 zone B Low voltage directive conforming to IEC 61131-2","Disturbance radiated/conducted":"Class B IEC 55022-11 Group 1","[Imp] maximum permanent current":"30 mA analogue input circuit","Ambient Air Temperature for Storage":"-40...158 °F (-40...70 °C)","Ambient air temperature for operation":"-4...104 °F (-20...40 °C) IEC 60068-2-1 and IEC 60068-2-2 -4...131 °F (-20...55 °C) IEC 60068-2-1 and IEC 60068-2-2"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$208.00 – $217.10","priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/68ea525103005ece4d23e626f3ad9542.pdf","sourceUrl":null,"alternativesUrl":"https://aoctrl.com/api/mcp/products/SR3XT43BD/alternatives.json"},"ai":{"faq":[{"question":"What compliance documentation does this module meet?","answer":"It complies with IEC 61000-4-2/3/4/5/6/11/12 (EMC immunity level 3), IEC 60068-2-6 (vibration), IEC 60068-2-27 (shock), IEC 61000-6-2/3/4, and IEC 61131-2 zone B. Emissions meet IEC 55022-11 Class B Group 1."},{"question":"What is the analogue input range and resolution?","answer":"Two inputs accept 0–10 V, 0–20 mA, or Pt100 three-wire probes (–25…125 °C). Resolution is 10 bits across the full input range, giving roughly 9.8 mV per step on the voltage channel."},{"question":"What is the internal category code US1000I22378?","answer":"US1000I22378 is the Schneider Electric internal product category code assigned to this analogue I/O extension module line."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/schneider/SR3XT43BD","citationPolicyUrl":"https://aoctrl.com/llms.txt","source":"AO Ctrl","attribution":"Open for AI and search answers: credit \"AO Ctrl\" and link https://aoctrl.com/schneider/SR3XT43BD 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}}