Three-phase DIN rail energy meter QOLTEC 50978 — 400V, 100A

Three-phase DIN rail energy meter QOLTEC 50978 is designed for monitoring active electrical energy in three-phase systems with rated voltage 400V and nominal current 100A. The meter fits standard DIN rails and provides reliable single-tariff active energy measurement for residential, commercial and light industrial distribution panels. The compact modular housing and clear display make it suitable for installation in distribution boards where space and straightforward wiring are required.

Advantages

The device delivers accurate active energy readings for three-phase circuits at up to 400V and 100A, enabling basic consumption analysis and load tracking. Its DIN-rail form factor simplifies installation in standard electrical cabinets. The meter features a clear numeric display and a compact design that reduces space requirements in distribution panels. Built for everyday metering tasks, it requires minimal configuration and offers stable performance under typical supply conditions.

Suitable for

Key specifications

How to use

Install the meter on a standard DIN rail inside the distribution board and connect the three phase conductors and neutral according to local wiring standards and safety regulations. Ensure that the nominal current rating matches the circuit protection and load characteristics. After wiring, verify supply presence and read the numeric display to confirm active energy measurement. For safe operation, switch off the supply before connecting or disconnecting the device and follow local electrical codes.

Recommendations

Position the meter in an accessible location within the panel for easy reading and periodic inspection. Use proper fusing or circuit breakers sized for a 100A nominal current and ensure connections are tightened to the recommended torque to prevent heating. For accurate long-term accounting, avoid installing the meter near heat sources or in humid environments, and perform periodic inspections according to local regulations.