NJB1-X Description
Relay Protection Relay NJB1-X Relay (Three-Phase Unbalance, Phase Sequence, Phase Failure Protection) 1. General NJB1-X relay (hereinafter called relay) are applied in AC380V~480V control circuits at a frequency of 50Hz/60Hz as protection elements of phase sequence, phase failuire and phase unbalance,making or breaking circuits.The relay with the true effective value of three phase AC voltatage provides more...