Contactor Siemens SIRIUS 3RH21221BB40
The SIRIUS contactor 3RH21221BB40 from Siemens with its 2 NO and 2 NC contacts and a control voltage of 24 V DC is the ideal contact element for your controller. Thanks to the possibility of extension with auxiliary contact blocks, the contactor relay 3RH21221BB40 can be flexibly extended if required. The proven screw connection of the contactor relay 3RH21221BB40 ensures the familiar wiring of your system. Typical fields of application include motor and plant control, switching of light controls and multiplication of signals.