Littelfuse 3 Phase SPDT Adjustable Trip & Restart Voltage Monitor (380-480V)

The 355 is a 3-phase voltage monitor with adjustable trip and restart delay, adjustable voltage unbalance and multiple diagnostic lights. It is perfect for heavy-duty applications that need both protection and simple user-friendly diagnostics. Applications include pump panels, commercial HVAC, oil rigs and others. The 355 uses microcontroller technology to monitor incoming voltage and de-energize its output relay if power problems exist. The 355 can protect motors from damage caused by single-phasing, high and low voltage, phase reversal and voltage unbalance. It has four diagnostic LEDs that clearly show overvoltage, undervoltage, voltage unbalance, reverse-phase and normal conditions. The 355-400 is equipped with a 470VA @ 600VAC pilot duty SPDT relay. Features: Input Voltage (V): 380 to 480VAC Maximum Input Power: 6W Input AC Line Frequency (Hz): 50/60Hz (50Hz will increase all delay timers by 20%.) Output Form: SPDT Output Load Rating (VA): Pilot Duty: 470VA @ 600VAC; General Purpose: 10A Restart Delay...