Only calibrated meters are approved for electricity billing according to §25 of the German Calibration Act. Non-compliance is an administrative offense under §19. Maximum current is 65 A, with a standby loss of only 0.4 watts. This is a modular device for mounting on a DIN-EN 60715 TH35 rail. 1 modular unit = 18 mm wide, 58 mm deep. Accuracy class B (1%). Equipped with an S0 interface. This AC meter measures active energy based on the current flowing between the input and output. The self-consumption of only a maximum of 0.4 watts of active power is not measured and not displayed. One external conductor with a current of up to 65 A can be connected. The starting current is 40 mA. If a load exceeding 50% is expected, a ventilation distance of 1/2 modular unit must be maintained from adjacent devices. If necessary, use the spacer DS12. Two N terminals for secure cross-wiring of multiple meters. The 7-segment LC display can also be shown twice within two weeks without power supply.