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5 in stock
This listing is for a NEW Siemens 6ES7 138-4FR00-0AA0. As part of the SIMATIC ET200S distributed I/O platform, this relay output module provides isolated switching of field devices from PLC and automation control systems. Featuring a single relay output rated for AC and DC loads, it is utilized in machine automation, process control, material handling, and industrial control applications requiring electrical isolation between control and load circuits.
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