6ES5420-3BA11 Siemens SIMATIC S5 System Module

The Siemens 6ES5420-3BA11 is a digital input module designed for use with the SIMATIC S5 programmable logic controller (PLC) series. This module provides digital input channels for connecting field devices such as sensors, switches, and other binary signal sources to the S5 automation system.

The 6ES5420-3BA11 is intended for industrial automation applications where reliable digital signal acquisition is required. It integrates into the S5 system rack and communicates with the central processing unit to enable monitoring and control of connected equipment.

The SIMATIC S5 platform is a legacy automation system that has been superseded by the SIMATIC S7 series. However, many S5 installations remain in active service across manufacturing, process control, and infrastructure applications, creating ongoing demand for replacement modules and spare parts.

Available from Tech Star as new or refurbished stock. Submit a price enquiry for availability and lead time.