The Siemens 7KM2200-2EA40-1DA1 is a SENTRON PAC2200 energy meter for 3-phase low-voltage systems up to 400 V. It provides 65 A direct measurement — the load conductors pass through the meter, eliminating the cost and complexity of external current transformers. Modbus RTU communication over RS-485 enables integration into industrial automation and energy management systems.

65 A Direct: Fewer Components, Faster Installation

Direct measurement eliminates the entire CT ecosystem: no CTs to specify, no CT wiring to route, no CT ratio to configure in software, and no CT accuracy class to factor into the overall measurement uncertainty budget. The 65 A rating directly serves the majority of sub-distribution applications. For circuits above 65 A, the 2EA30 (5 A indirect) variants with external CTs remain the correct choice.

Modbus RTU for Industrial Retrofit

The RS-485 Modbus RTU interface is the most universally supported industrial communication standard — compatible with PLCs, RTUs, protocol converters, and energy management gateways across all major manufacturers. This variant is positioned for non-billing energy monitoring: internal cost allocation, consumption tracking, and energy performance indicator (EnPI) reporting where MID certification is not required.

Decision Parameters