KNX measuring sensor for 3 circuits with 3 transformers. Measuring sensor for recording the power or consumption values of the individual phases, as well as total power/consumption values for flexible data recording using a transformer with a measuring range of up to 90A. A partial and total count as well as a double tariff recording can be transmitted per transformer, whereby the partial counter can be reset. The power and energy measurement as well as the voltage and current value per input can be activated as a KNX telegram. A higher data transmission can be activated in a limited time window using the dynamic mode. An IP65 temperature sensor can also be connected.