Three-phase meter for measuring a three-wire or four-wire three-phase network via a transformer connection CTVT (transformer ratio for current and voltage configurable) up to a maximum of 6 A. The following values are displayed on a backlit display with up to 7 digits: active energy (class 0.5) and reactive energy (class 2) for import and export, power, currents, voltages (L-L, L-N), frequency, cos phi, power factor, and apparent power (per phase and total). Communication can occur via the integrated RS485 or through the infrared interface. The energy meter has 2 fixed configured inputs and outputs. The output can be used either as a pulse output or as an alarm output (up to 25 alarm values). The inputs are used for tariff control or for counting external pulses. Additionally, the meter can record up to 4 tariffs. With the integrated clock, time-controlled functions can be executed. The meter is calibrated according to MID and approved according to IEC. The installation width is 7 DIN modules.