WAGO 879-3040 3-Phase Energy Meter MID Compliant

The WAGO 879-3040 is a high-precision electronic 3-phase energy meter designed for direct measurement of active and reactive energy in commercial and industrial applications. MID compliant (Module B + D), it ensures legal metrological control for billing purposes. With a compact 4 TE DIN rail housing, clear LCD backlit display, and two S0 pulse outputs, it integrates seamlessly into energy management systems.

Advantages

MID certification guarantees accuracy and legal compliance for sub-metering. Direct measurement up to 65 A eliminates the need for current transformers, reducing installation complexity. The wide operating temperature range (-25 °C to +55 °C) and IP51 protection ensure reliable performance in demanding environments.

Suitable for

• Energy monitoring and billing in commercial buildings
• Industrial sub-metering for cost allocation
• Integration into building management systems (BMS)
• Renewable energy monitoring (solar, wind)

Key specifications

• Nominal voltage: 3x230/400 V AC
• Nominal current: 5 A, max 65 A
• Accuracy class: B (EN 50470-1/3) for active energy, Class 2 for reactive
• Frequency: 50/60 Hz
• Display: 7-digit LCD with backlight
• Interfaces: 2x S0 pulse outputs
• Mounting: DIN rail (EN 60715), 4 TE width
• Protection: IP51

Recommendations

For optimal integration, pair with WAGO 879-3040 accessories such as DIN rail adapters or mounting kits. Ensure main circuit terminal cross-section between 1.5 and 16 mm² for proper connection.