The Siemens 7KM1020-0BA01-1DA0 is a SENTRON PAC1020 energy monitor designed for panel-mount installation in low-voltage distribution boards. It measures voltage, current, active and reactive power, and frequency in single-phase and three-phase systems, providing a clear graphical LC display for on-site reading and Modbus RTU communication for integration into higher-level energy management systems.

Panel-Mount Form Factor for Control Cabinets

Unlike DIN-rail-mounted energy meters, the PAC1020 uses a 96 x 96 mm panel cutout — the standard form factor for control cabinet door mounting. The 42 mm installation depth leaves ample room behind the panel for wiring and accessories. This form factor is ideal when the operator needs direct visual access to measurements at the cabinet front.

Modbus RTU for Industrial Automation Integration

The RS-485 Modbus RTU interface enables the PAC1020 to feed measurement data to PLCs, SCADA systems, and energy management platforms. With configurable baud rates from 4800 to 115200 and a Modbus slave address range of 1–247, it adapts to existing fieldbus infrastructures without additional gateways.

Graphical Display with Multi-Parameter Visualization

The graphical LC display goes beyond numeric readouts — it can present multiple measured values simultaneously, trend data, and system configuration menus. Four control keys with variable function assignment provide intuitive navigation, reducing the learning curve for on-site personnel.

Decision Parameters