Siemens 3RT1916-2ED21 auxiliary switch block

The SIEMENS auxiliary contact block 3RT1916-2ED21 is designed to expand the switching functions of SIEMENS contactors from the 3RT1 series. It allows for easy retrofitting of normally open and/or normally closed contacts and is essential for complex control and monitoring tasks in industrial automation systems. This attachment block features quick and secure mounting on the front of the contactor. The reliable contact closure ensures stable signal transmission for control circuits and safety shutdowns. Specifically developed for use in control cabinets and industrial environments. Applicable in mechanical engineering, switchgear construction, and automation technology. Expands circuits for control tasks, feedback, or safety interlocks. Ideal as a spare part or for new installations. Configure your control flexibly. Order now.