Siemens SIMATIC S7-300 Analog Input Module 6ES7331-7KF02-0AB0

Description

The Siemens 6ES7331-7KF02-0AB0 is a versatile SM 331 analog input module for the SIMATIC S7-300 PLC system. It provides 8 high-precision, galvanically isolated analog inputs with a resolution of 12 bits. This module is capable of handling various signal types, including voltage, current (2-wire and 4-wire transducers), resistance, and thermocouples, making it suitable for a wide range of industrial measurement and control tasks.

Specifications

• Manufacturer: Siemens
• Product Line: SIMATIC S7-300
• Module Type: SM 331 Analog Input
• Part Number: 6ES7331-7KF02-0AB0
• Number of Analog Inputs: 8
• Isolation: Galvanic isolation between channels and backplane bus
• Resolution: 12 bits
• Input Types: Voltage, Current, Resistance, Thermocouple (Types B, E, J, K, L, N, R, S, T)
• Required Front Connector: 20-pole (e.g., 6ES7392-1AJ00-0AA0)

Label Info

• Part Number: 1P 6ES7 331-7KF02-0AB0
• Serial Number: S C-NOA78344
• Hardware Version (E-Stand): 01

Application

This module is ideal for applications requiring precise analog data acquisition in manufacturing, process control, and building automation. It is commonly used to connect sensors measuring temperature, pressure, flow, and level to a central control system.

Country of Origin

Made in Germany.

CO2 Impact

By purchasing this pre-owned module, you help avoid the 9.2 kg of CO2 emissions associated with manufacturing a new one. This saving is equivalent to the emissions from driving a standard car for approximately 46 kilometers.

Availability

This module is a phased-out product but remains available as a spare part. Order now from PLC2Day for expert support and fast delivery.

FAQ

This module is highly versatile and can measure voltage, current (from 2-wire and 4-wire transducers), resistance (including RTDs like Pt100), and various types of thermocouples (e.g., J, K, T, E).

Yes, the 6ES7331-7KF02-0AB0 features galvanic isolation between the analog input channels and the S7-300 backplane bus, which protects the PLC's CPU from potential electrical disturbances from the field.

This module requires a 20-pole front connector for wiring, such as the Siemens part number 6ES7392-1AJ00-0AA0.

Last Update: Friday, March 13, 2026

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