Product Description
Siemens 3RH1921 side mounted auxiliary contact block
Siemens 3RH1921-1EA20 side mounted auxiliary contact with 2 N.O. contact set. For use with the Siemens Sirius 3RT1 line of IEC rated contactors from sizes S0-S12.
The laterally mountable auxiliary switch blocks to EN 50 012 can only be used if no 4-pole auxiliary switch blocks are snapped onto the front. If single-pole auxiliary switch blocks are used in addition, the location digits on the contactor must be noted.
Up to four auxiliary contacts can be mounted, whereby any design of the auxiliary switch blocks is permitted. If two 2-pole, laterally mounted, auxiliary switch blocks are used, one must be mounted on the left and one on the right for the sake of symmetry.
