RIR Power Electronics Ltd was formerly incorporated as Ruttonsha International Rectifier Limited in 1969 in collaboration with International Rectifier Corporation, US, for the manufacture of power semiconductor devices, and thereafter was converted into a public limited company in Mar.'86. The company made its maiden public offer in 1986. Initially situated at Vikhroli, Bombay, the company's unit was later on shifted to Halol, Gujarat. It manufactures power semiconductors - power rectifiers, silicon controlled rectifiers and power rectifier assemblies. RIR also manufactures electronic equipment like battery chargers, rectifiers, etc.