Phase control relay for networks with isolated neutral CKF-318 (35mm DIN rail mounting; trip threshold adjustment; phase sequence control; 3x400V 8A 2P IP20) F&F EA04.004.007 Euroautomatika F&F

"CKF" series phase control relay DIN-rail mounting. Designed to protect electric motors and electrical installations powered from a three-phase network in cases of: absence of at least one phase, voltage asymmetry, voltage drop below 320 V, voltage rise above 480 V, or phase sequence violation. Operating principle If the voltage is within normal limits, the executive relay contacts are closed and voltage is supplied to the motor control contactor to turn it on. In case of any of the above-mentioned emergency situations, the relay contacts open and the contactor is disconnected. Switching occurs automatically after the restoration of the mains supply voltage. Features: phase presence control; asymmetry control between phases; low voltage control; upper voltage control; phase sequence control; supply voltage 3x400 V AC; contact - 2NO/NC (2x8 A).