Deskripsi RM4TR32 3 Phase Voltage Monitoring Relay [Us] rated supply voltage 380...440 V 50/60 Hz Control threshold undervoltage 300...430 V Control threshold overvoltage 420...480 V Output contacts 2 C/O Setting accuracy of the switching threshold +/-3 % Range of product Zelio Control Measurement range 290...484 V Poles description 3P