For protection of hockey puck style solid state relays (say 10 A at
125 V), it is suggested by vendors to use semiconductor I2T type fuses because they blow in 2 msec which is much faster than standard fast blow fuses. But since the semiconductor fuse can cost more than the solid state relay, I am wondering how important it really is to use them, specifically for protection against shorted loads where the relay would be subject to very high currents.- posted
14 years ago