Solid state relays are different from rectifiers
Solid state relays are used as switches, while rectifiers are used as power supplies
The rectifier is a device fabricated using a semiconductor element. Rectifier as the name suggests is the use of semiconductor characteristics in the AC circuit can be alternating current into a DC current device
Relays and rectifiers can not replace each other, usually ordinary relay is composed of coils, iron core, contacts and other components, many types of relays, such as voltage relays, current relay pressure relays, thermal relays, speed relays, gas relays, weak magnetic relays, liquid Bit relay, phase sequence relays, etc. according to different needs as a circuit control and protection.