What This Module Is and Where It Fits
The 6ES7138-4FA02-0AB0 is a Siemens SIMATIC DP electronic module for the ET200S distributed I/O system, providing 8 fail-safe digital inputs configurable as 8 single-channel or 4 two-channel, and 2 digital outputs. It operates at a rated voltage of 24 V DC and draws up to 300 mA from the backplane, with a typical power loss of 4 W.
Key Ratings and Their Meaning for Fit
Built-in diagnostics and a short-circuit protection circuit (electronic response threshold 0.7 to 1.8 A) simplify troubleshooting without additional hardware. The module dimensions are 30 mm wide, 52 mm deep, and 81 mm high, fitting onto any standard ET200S terminal module with a BU type compatible with 30 mm modules. Note that reverse polarity protection is not provided, so L+ wiring must be verified during installation to avoid damage.
Lifecycle status: current.
Sourcing and Procurement Takeaway
For integration into a BOM line, confirm that the ET200S base unit and terminal module are compatible with the 30 mm width and 24 V DC supply.