WAGO 879-3020 Energy Meter
MID Approved 3-Phase Direct Measurement up to 65A
The WAGO 879-3020 Energy Meter (MID) is designed for direct connection up to 65A in three-phase systems (3×230/400V, 50Hz). MID Class B approved (EN 50470-3), it is suitable for billing and cost allocation where certified energy measurement is required.
With direct measurement capability (no CT required), it provides a straightforward and space-efficient metering solution for commercial and industrial installations.
Compact 72mm Width – Space-Saving 4PS Design
With a slim 72mm width (4PS), this meter optimises valuable DIN rail space inside distribution boards and control cabinets.
Push-in CAGE CLAMP® technology with integrated lever ensures:
- Fast and secure conductor termination
- Reduced installation time
- Reliable long-term electrical connections
Comprehensive Energy Monitoring
The meter provides full three-phase measurement including:
- Active energy (import & export)
- Reactive energy
- Voltage (all phases)
- Current (all phases)
- Power values
- Mains frequency
- Four-tariff energy measurement
All values are clearly displayed on a large, illuminated LCD with backlight for instant system visibility.
Advanced Communication & System Integration
Designed for seamless integration into energy and building management systems, the device includes:
- Modbus® (RS-485, 2-wire)
- M-Bus communication
- 2 x configurable S0 pulse outputs
- Bluetooth® interface for configuration
This makes the WAGO 879-3020 ideal for remote monitoring, data logging and smart energy management applications.
Flexible Network Compatibility
- Supports two-wire, three-wire and four-wire networks
- Nominal input voltage: 3 x 230–400 VAC (±20%)
- Input current: ≤ 65A (direct connection)
- Frequency range: 45–60 Hz
- Reference current (Iref): 5A
- Accuracy: Class B (1% active energy)
- Calibration validity: 8 years
Powered directly via the measurement circuit, with low power consumption (max. 2W active power per phase).
