Can anybody help on this? For medium voltage applications, say 100V~ 600V, what is the benefit of using an electro-mechanical relay as opposed to electronic switches, either a thyristor/IGBT/MOSFET? Reliability, voltage isolation, safety issues? There are many advantages to using an electronic switch in terms of speed, avoiding spikes, power consumption, propensity to failure, cost, etc..? So would there be any reason to use an electro-mechanical relay over semiconductor based switches? Thanks so much.. BTW, the application does not involve switched mode power supply or anything that needs any speed in switching. I would really appreciate if anyone can help.
