Single-phase electric energy meter UEM45-2

DIN railRS-485with data logger

UEM45-2A R is the new high-performance single-phase energy meter, certified for operation up to 70°C. Its compact design (1 DIN module) enables easy integration into panels with limited space, while ensuring high measurement accuracy and advanced functionality. It supports direct connection up to 45 A and communication via RS485 Modbus RTU or M-Bus. The meter provides bidirectional measurement, compliant with MID Class B (EN 50470-3), making it suitable for billing and certified energy accounting. It measures energy and key electrical parameters, which can be displayed both on the backlit LCD and through the RS485 communication port. The device features two S0 outputs for pulse emission—one fixed and one fully programmable—and supports up to four tariff management settings. Optional software is available for device management. - Power supply: Power supplied from the voltage circuit. Range: nominal voltage ±20%. - Voltage & Frequency: Nominal value: 230 V 50/60 Hz. - Current: Starting current Ist: 0.02 mA. Maximum current: Imax: 45 A. - Accuracy: Active energy class B in compliance with EN 50470-3. Reactive energy class 2 in compliance with EN 62053-23. - Communication: RS485 Modbus RTU (Configurable transmission speed range: 2.4 – 38.4 kbps). M-Bus (Configurable transmission speed range: 600 – 9.6 kbps). - S0 outputs: Two passive optoisolated outputs compliant with IEC 62053-31: - S01: fully programmable via display or protocol, with selectable pulse weight (0.001 / 0.01 / 0.1 / 1 En/imp) - S02: fixed pulse output: 1000 imp/kWh - Tariff management: 4 tariffs remotely monitorable via COM port. - Environmental conditions: Operating temperature: -40°C to +70°C. Storage temperature: -40°C to +75°C. Protection degree: IP51 (front panel) / IP20 (terminals). - Category: MID Energy meters - Tags: S, SP1