Siemens Auxiliary Switch Block, 2 NO + 2 NC, Screw Terminals

The Siemens Auxiliary Switch Block (3TX4422-2A) is designed to provide additional contacts for Siemens contactor relays and motor contactors. This block features screw terminals for secure connections and is configured with 2 Normally Open (NO) and 2 Normally Closed (NC) contacts, fulfilling the requirements of Ident. no. 22 according to EN 50005. It serves as a crucial accessory for expanding the control and signaling capabilities of Siemens motor starters and contactors.

This auxiliary switch block is widely used in industrial control panels for signaling the status of contactors, interlocks, and control circuits. It is essential for safety interlocks, status indication lamps, and feedback signals to PLCs. Applications span across various industries, including manufacturing, building automation, and energy management systems where reliable switching is paramount.

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