Skip to main content
Log in
Siemens 6ES7331-1KF01-0AB0 — Analog Input Modules

6ES7331-1KF01-0AB0 SIMATIC S7-300 Analog Input Module, 8 AI,

MPN6ES7331-1KF01-0AB0
End of Life

Siemens S7-300 analog input module, 8 channels, RTD (Pt100, Ni100) and voltage/current ranges, 40x125x117 mm.

$122.22Ref. price · indicative, final on quote
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

6ES7331-1KF01-0AB0 — Inputs & Signal Ranges
ParameterValue
Number of analog inputs8
Current input rangeYes
Voltage input rangeYes
Resistance measuring rangesYes
RTD support (resistance thermometer)Yes
Thermocouple support (types)No
Input range: 0 to 20 mAYes
Input range: 4 to 20 mAYes
Input range: -10 to +10 VYes
Input range: -5 to +5 VYes
Input range: -80 to +80 mVNo
Input range: 0 to 600 OhmYes
RTD type: Pt100Yes; Standard/climate
RTD type: Pt200No
Current measurement: 2-wire transducerYes; with external supply
Current measurement: 4-wire transducerYes
Input resistance (0 to 20 mA)50 Ω
Input resistance (4 to 20 mA)50 Ω
Input resistance (-10 to +10 V)100 kΩ
Permissible input voltage, max. (destruction limit)30 V; 12 V continuous, 30 V for max. 1 s
Permissible input current, max. (destruction limit)40 mA
Max. shielded signal cable length200 m; max. 50 m at 50 mV
6ES7331-1KF01-0AB0 — Measurement Performance
ParameterValue
Resolution (bit incl. sign), max.13 bit
Voltage measurement error (±)0.4 %; 0.4% (±5 V, 10 V, 1 to 5 V, 0 to 10 V); 0.3% (±50 mV, 500 mV, 1 V)
Current measurement error (±)0.3 %; ±20 mA, 0 to 20 mA, 4 to 20 mA
Interference voltage suppression (at interference frequency)50 / 60 Hz
6ES7331-1KF01-0AB0 — Diagnostics & Monitoring
ParameterValue
Diagnostic alarmNo
Diagnostics functionNo
Limit value alarmNo
6ES7331-1KF01-0AB0 — Isolation
ParameterValue
Isolation: channels to backplane busYes
Isolation: between channelsNo
Isolation test voltage500 V DC
6ES7331-1KF01-0AB0 — Power
ParameterValue
Power loss, typ.0.4 W
6ES7331-1KF01-0AB0 — Mechanical
ParameterValue
Required front connector40-pin
Width40 mm
Height125 mm
Depth117 mm
Weight, approx.250 g

Product details

8-channel analog input for mixed signals

The Siemens 6ES7331-1KF01-0AB0 is an 8-channel analog input module for the S7-300 family, accepting RTD, voltage, current, and resistance signals on a single card. RTD support covers Pt100 (standard/climate), Ni100 (standard/climate), Ni1000, and LG-Ni1000; thermocouple and Cu10 are not supported. Voltage ranges include ±10 V, 1 to 5 V, ±1 V, and ±5 V; current inputs accept 0 to 20 mA and 4 to 20 mA; resistance measurement up to 600 Ω is also available. The module occupies one 40 mm slot in the S7-300 rack (125 mm height, 117 mm depth), fitting standard DIN-rail mounting.

Frequently asked questions

What RTD types does the 6ES7331-1KF01-0AB0 support?

It supports Pt100 (standard/climate), Ni100 (standard/climate), Ni1000, and LG-Ni1000. Copper RTDs (Cu10) and thermocouples are not supported.

What is the depth of this module?

117 mm.

Is the 6AG1123-2DB03-2AX0 a drop-in replacement?

Yes, it has the same dimensions and wiring, but it is a ruggedized SIPLUS version for harsh environments. It is not a standard replacement if you do not need the extended rating.

MPN
6ES7331-1KF01-0AB0