Automatic Power Factor Correction Relay works on a voltage from 70V to 285V with an input frequency of 50Hz and on a temperature of -10° C to + 45° C. The Relay is suitable for contactorised capacitor switched panel and has minor effects of harmonics on performance. The Relay ensures optimum performance for various industrial applications. Automatic Power Factor Correction Relay is easy to install and easy to operate offering accurate measurements.