Is reference A9C15415 mandatory for the mounting of impulse relay reference A9C30811
Reference A9C15415 ensures the mechanical and/or electrical link between impulse relays and their auxiliaries. Thus it is used in case auxiliaries are to be added to the relay. Auxiliaries as indication contacts , centralized control r..etc. As a conclusion, reference A9C15415 is not mandoatory for the mounting of the relay reference A9C30811.