Siemens 3SU1400-1AA10-1EA0 is a 22 mm SIRIUS ACT front‑plate contact module with two normally closed (2NC) contact elements and screw terminals, designed for front‑panel mounting. It pairs with 22 mm pushbutton devices to provide two NC switching contacts for control circuits and carries a 10 A switching rating. As part of the 3SU1 family, the module features positive opening of the contacts, insulation voltage up to 500 V, and an enclosure rated IP40 (IP20 at the terminal side), with shock resistance specification of 50 g for 11 ms, ensuring reliable operation in typical industrial environments.
