What are the solid-state relay and their major applications?

Solid-state relay is the semiconductor alternates of the electromechanical relay. They are widely used in manufacturing industries to regulate the electrical loads on the machines which do not use any loose parts in nature.

The electromechanical relay uses coils, magnetic fields, springs along with mechanical contractors which operate and provide supply to the switch. On the other hand, the solid-state relay does not use any moving parts, but instead, they use optical and electrical properties of the semiconductors to perform input and output functions of switches.

The SSR works with the same properties as of electromechanical relay, where the output of SSR is the conventional electrical switch, which offers very high resistance when the user demands a non-conducting environment. The same property is reversed as the production offers low resistance when conducting. One can also fetch an SSR for dual needs of AC and DC, which are designs explicitly using TRIAC or switching transistor output on the place of NO or mechanically ordinarily open contacts.

Significant advantages of using the solid-state relays

The solid-state relays and the electromechanical relay both have the same low voltage for the input; the electromechanical relay possesses a limited life-cycle with slower speed switch while working at locations that have high power demand. On the other hand, the solid-state relay does not have any such requirements or limitations, making it appropriate for the job.

One of the best advantages of the solid-state relays is they do not use any moving parts, and hence the users do not have to spend more on the wear and tear of the elements. The users can also regulate the ON and OFF switches much faster than the electromechanical relays as there is no armature to move. Due to the zero voltage turn OFF and zero current OFF, there is no sound in the transistor.

All about the input and pricing of the solid-state relay

The users can also buy the solid-state relay on standard shelf OFF packages, which range from few volts and amperes to hundred volts and amperes based on the demand in their field. The solid-state relays which offer high electrical output are expensive when compared to the ones with low electrical output. On the other hand, the electromechanical circuits are cheaper when compared to SSR.