Description
The Siemens Industrial Controls 3RH2911-1DA11 Auxiliary Switch Block (1NO/1NC) is a contact block used to provide additional switching signals based on the position. It operates through a mechanically linked snap-on mechanism that changes the state of one normally open and one normally closed contact whenever the connection energizes or de-energizes, enabling status feedback and interlocking control. mounted by side mounting onto a compatible S00 frame within HVAC systems such as air handling units, packaged units, and motor-driven condenser or compressor control panels, it integrates directly with the housing for synchronized operation.
