The Siemens 3RK1400-0GQ20-0AA3 is a K45 compact field I/O module that gives you two PNP digital inputs and two PNP digital outputs in a single IP67 housing — no control cabinet needed for the I/O points themselves. It's built for the ET 200pro distributed I/O family, meaning it sits directly on the machine frame or conveyor line, wired via standard M12 connectors.
The 0.2 A limit — what it means on the line
The module's total current budget across all inputs and outputs is 0.2 A. That's not per channel — it's the whole module. Plan your load split accordingly; the built-in short-circuit protection will trip if you exceed it.
Field mounting and connectivity
Rated IP67, so it handles washdown and wet environments on the plant floor — common for automotive, food-and-bev, or material-handling zones where you don't want I/O pulled back to a cabinet. Mounts via standard rail or wall plate. The two M12 sockets carry the I/O: socket 1 maps PIN 4 to input D0 and PIN 2 to output D3; socket 2 maps PIN 4 to input D1 and PIN 2 to output D4. PIN 5 on each socket is the ground terminal, routed out through a 2.8 x 0.8 mm flat tab sleeve for panel bonding.