MU350 is 3-phase voltage relay that combines various protections and starting delay. • Undervoltage • Overvoltage • Delay-on • 2 voltage-free output contacts • Voltage and frequency display • 3-Phase • Unbalance • Phase loss • Phase sequence • With or without neutral connection • Phase to phase or phase to neutral monitoring • Programmable relay outputs • ANSI Code : 27, 47, 59, 60