Three-phase meter for measuring a three-wire or four-wire three-phase network via a CT transformer connection (configurable transformer ratio for current) up to a maximum of 6 A. The following values are output via a seven-segment display with up to 7 digits: active energy (class 0.5) and reactive energy (class 2) for import and export, power, currents, voltages (LL, LN), frequency, cos phi, power factor and apparent power, both per phase and total. Communication can take place via the integrated RS485 interface (Modbus RTU) or via the infrared interface for connecting a KNX module. The energy meter has 2 permanently configured inputs and outputs. The output can be used either as a pulse output to output active or reactive energy or as an alarm output. Up to 25 alarm values (threshold values with time delay) can be set here. The inputs are used to control the tariffs or to count external pulses. The resettable intermediate counter enables the measurement of individual intervals. The meter also records up to 4 tariffs. The meter is calibrated according to MID and approved according to IEC. The installation width is 4 DIN modules.