The panel meter or display is designed to measure simple three-phase-voltages. This panel meter features an installation in control panels. The measurements of the panel meter are 96 x 96 mm, so the indicated values are easily readable. The panel meter can be configured and customized for various measuring and indicating ranges. Thepanel meter is designed for alternating currents and can measure up to 500 V directly without the need of a transformer (phase-to-phase). The panel meter is designed in CAT III and can be applied to many monitoring tasks of voltages in system controlling. The overload protection of the panel meter covers 100 % of the chosen scale range. As a special highlight the panel meter features a phase change over, so that several phases can be monitored with only one panel meter.