Siemens energiemeter 7KT1666-0EE01-0EE3x80A MID geijkt MOD-Bus

In commercial buildings and industrial facilities, accurate energy monitoring is critical for cost allocation and efficiency. The Siemens 7KT1666-0EE01-0EE0 is a 3-phase direct-connected energy meter designed for sub-metering applications up to 80 A. It measures active and reactive energy, voltage, current, power, frequency, and power factor with high precision, and is MID calibrated for billing compliance. With Modbus RTU communication and two configurable S0 pulse outputs, it integrates easily into building management systems. The backlit LCD provides clear readings, and the compact 4-module DIN rail housing saves space in distribution boards.

Key specifications

• Meter type: Electronic energy meter, 3-phase, direct connection
• Nominal voltage: 3x230/400 V AC, 50/60 Hz
• Maximum current: 80 A
• Accuracy class: B (MID) for active energy
• Communication: Modbus RTU interface
• Pulse outputs: 2 x S0 (configurable)
• Display: Backlit LCD
• Measured parameters: Active/reactive energy (import/export), voltage, current, power, frequency, power factor
• Tariff: Single tariff
• Mounting: DIN rail, 4 TE (72 mm) width
• Protection: IP51 front, IP20 terminals
• Operating temperature: -25 to +55 °C
• Housing: Self-extinguishing polycarbonate

Why choose it

This meter offers MID-certified accuracy for billing, ensuring legal compliance in sub-metering. Its Modbus RTU interface enables seamless integration with energy management systems, while the dual S0 outputs provide flexibility for pulse counting. The compact design and wide operating temperature range make it suitable for diverse installation environments, from electrical cabinets to outdoor enclosures.

Ideal use cases

• Sub-metering in commercial buildings for tenant billing
• Industrial energy monitoring for cost allocation
• Integration into building management systems via Modbus
• Renewable energy system monitoring (e.g., solar PV)
• Data center power usage tracking

Good to know

The meter is MID calibrated (Module B+D) and comes with a manufacturer's warranty. It supports single tariff operation and is designed for direct connection without external current transformers. The backlit display ensures readability in low-light conditions. The S0 pulse outputs can be configured for energy pulses, allowing connection to external counters or building automation systems.