The PVM-31 voltage relay is designed for single-phase or three-phase photovoltaic installations. It continuously monitors and displays the voltage on each phase. When the voltage is within the specified range, it activates the corresponding relay. Each phase is measured and monitored independently.

• Voltage measurement and display (True RMS)
• Three independent outputs for the respective phases
• Adjustable lower and upper voltage limits
• Adjustable switch-on and switch-off delay times
• Independent adjustment of limits and delay times for each phase
• Indication when the display range is exceeded
• TH35 rail mounting
• Width: two modules