Siemens Auxiliary contacts are the perfect added component solutions to the main contacts. A key function of the Auxiliary contacts is they transfer data from the circuit to a logic controller, which consecutively gives instructions to the linked devices about whether to turn on or off. This instruction can also be executed remotely.
The SIRIUS auxiliary contact block 3RH2911-1HA22 from Siemens has two NO and two NC contacts. This makes the auxiliary contact block an ideal complement to contactor relays and power contactors of size S00 and S0. The screw-type connection ensures easy installation. The auxiliary switches mounted at the front can be disassembled with the help of a centrally arranged release lever. Typical fields of application include motor and plant control, switching of light controls and multiplication of signals.
Design: Auxiliary switch block
Auxiliary contacts: 2 x NO/NC
Dimensions (W x H x D): 36 x 37.5 x 43.7 mm
Mechanical operating time: 10,000,000 operating cycles
Electrical connection: Screw-type terminals
Operating temperature: -25 °C to 60°C
Protection rating: IP20