The B23-313 energy meter is a direct connect meter designed for three-phase systems. It has a maximum current rating of 65A and operates at 230 VAC. This energy meter features two output and two input options, allowing for flexible connectivity. It also supports M-Bus TP communication, enabling easy integration into existing systems. The accuracy of the B23-313 energy meter is impressive, with a class 1% accuracy for active energy measurement and class 2% accuracy for reactive energy measurement. The range of measurement spans from 220 V to 240 V for N-L (neutral to line) voltage and from 380 V to 415 V for L-L (line to line) voltage. With an IP20 protection degree, this energy meter offers reliable protection against dust and solid objects. The backlit pixel-oriented LCD display ensures clear visibility in various lighting conditions. In terms of functionality, the B23-313 energy meter belongs to the Silver sub-group. It supports active, reactive, and apparent energy measurements, as well as import/export of energy. The resettable energy registers allow for accurate tracking of consumption. The B23-313 energy meter can be configured as either Class 0.5 or Class 1, depending on the desired level of accuracy. It also supports tariffs, fixed I/O connections, activeenergy monitoring, and pulse output/alarm functionality. Measuring four modules wide and designed for DIN rail mounting, the B23-313 energy meter offers a compact and convenient solution for monitoring energy usage in three-phase systems.