Three-phase meter for measuring a three-wire or four-wire three-phase network via a CTVT transformer connection (configurable transformer ratio for current and voltage) up to a maximum of 6 A. The following values are output on a white backlit display with up to 7 digits: active energy (class 1) 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 M-Bus interface or via the infrared interface for connecting a KNX module. The energy meter has one output. This can be used either as a pulse output to output the active or reactive energy or as an alarm output. Up to 25 alarm values (threshold values with time delay) can be set here. The meter is calibrated according to MID and approved according to IEC. The installation width is 7 DIN modules.