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