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Schneider Electric SR3XT43BD

SR3XT43BD Zelio Logic Analogue I/O Extension, 2 In/2 Out, 10

MPNSR3XT43BD
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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.

$208.00 – $217.10Ref. price · indicative, final on quote
Schneider Electric SR3XT43BD datasheet (PDF)
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MOQ1 pcs
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jul 2026
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Specifications

SR3XT43BD key specifications
ParameterValue
Load typeResistive analogue output
Range of productZelio Logic
Analogue input typeCommon mode
Temperature probe typePt 100, 3-wire IEC 751
Product or component typeAnalogue I/O extension module
Maximum permissible voltage30 V analogue input circuit
Maximum load current10 mA analogue output
Short-circuit protectionWith analogue output
[Imp] maximum permanent current30 mA analogue input circuit
IP degree of protectionIP20 IEC 60529 terminal block) IP40 IEC 60529 front panel)
Connections - terminalsScrew 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
Pollution degree2 IEC 61131-2

All specifications

SR3XT43BD additional specifications
ParameterValue
Relative humidity95 % without condensation or dripping water
Operating altitude6561.68 ft (2000 m)
Maximum altitude transport10000 ft (3048 m)
StandardsIEC 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
CategoryUS1000I22378
LSB value0.15 °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
Conversion timeSmart relay cycle time analogue input circuit Smart relay cycle time analogue output
Input impedance18 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
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
Tightening torque4.4 lbf.in (0.5 N.m)
Operating distance10 m with screened cable analogue input circuit 10 m with screened cable analogue output
Analogue input range0...10 V 0...20 mA -25...125 °C
Analogue input number2
Analogue output range0...10 V
Analogue output number2
Analogue input resolution10 bits on the input range
Analogue output resolution10 bits on the output range
Reverse polarity protectionAnalogue input circuit with
Environmental characteristicEMC 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
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

Product details

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.

Frequently asked questions

What compliance documentation does this module meet?

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.

What is the analogue input range and resolution?

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.

What is the internal category code US1000I22378?

US1000I22378 is the Schneider Electric internal product category code assigned to this analogue I/O extension module line.

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SR3XT43BD