SCR Rectifiers are majorly used in tools and devices where the high power control clubbed with high voltages is required. Their nature of work and performing assigned duties makes them appropriate to be used in medium to high varying voltage, Ac power control applications such as lamp dimming along with motor control and regulation of power. The abbreviated form given to these rectifiers when elaborated defines Silicon Controlled Rectifiers. They have semi conductors in them which allows the flow of current in single direction. SCR Rectifiers offers stability even less than 1% and can be controlled by remote. These rectifiers also uses air cooling mode for cooling and has output voltage of 40 V.