Siemens 6ES7138-4FR00-0AA0 Simatic S7 PLC Module

Siemens 6ES7138-4FR00-0AA0 is a SIMATIC ET 200S DP electronics module (1F-RO) that provides a single relay output with two normally open contacts, designed for use in PROFIBUS DP-based ET 200S I/O networks. The module is 30 mm wide and intended for ET 200S mounting, operating as part of a Siemens SIMATIC DP system. It supports a supply voltage of 24 V DC or 24…230 V AC, with the relay output capable of switching up to 5 A and handling load voltages from 24 V DC to 24…230 V AC. Power for the module itself is supplied via a fail-safe output, e.g., from an F-DO device. This makes the 6ES7138-4FR00-0AA0 suitable for remotely controlling field devices such as actuators or signaling loads within a distributed ET 200S network, aligning with typical SIMATIC DP electronics module configurations for S7 automation architectures.