Siemens 6ES7138-4FB02-0AB0 Programmable Logic Controller

Siemens 6ES7138-4FB02-0AB0 is a four-channel fail-safe digital output module for the SIMATIC ET 200S distributed I/O system. It provides four 24 V DC digital outputs, each rated for up to 2 A, and is designed for PROFIsafe safety applications, enabling safe control of actuators and safety devices within automation systems. As part of the ET 200S safety family, this module integrates into Siemens' safety I/O network to deliver reliable, monitored output signals to field devices such as safety relays, guards, and interlock circuits. The module supports the safety features of PROFIsafe devices, including diagnostics and safe-state signaling to help meet industrial safety requirements. In decentralized safety I/O architectures, it complements non-safety digital and analog modules, helping simplify wiring and diagnostics while preserving safety integrity. The 6ES7138-4FB02-0AB0 is a component of Siemens' ET 200S portfolio, commonly used in applications across manufacturing and packaging environments where safety-rated output control is required.