The RM35TF30 from Schneider is a Zelio multifunction phase control relay. The phase control relay monitors phase sequence, loss of one or more phases, unbalance level, voltage level between phases or between phases and neutral. Typical applications include 3 phase motors, moving 3 phase machines and equipment, overhead cranes, winches, lifts, goods lifts, escalators, travelators, pumps, fans, air extractors, mining excavators and conveyors.