How will the wear of a relay be affected if the current through the relay is brought to zero before the relay is operated?
I'm thinking about having a solid state relay in series with 3 mechanical relays. The 3 mechanical relays will all be connected to the output of the solid state relay, and channel the current to one load each. Thus there are three loads, and three mechanical relays. I can arrange to turn off the solid state relay before opening or closing any of the mechanical relays.
Can I assume that the lifetime of the mechanical relays will be equal to the speciefied mechanical lifetime of the relay, or will current flowing through the closed relays somehow cause aging in and of itself?