This Three Phase Electricity Energy Check Meter 100A can directly and accurately measure the active energy of the energy consumption.6+2 digits LCD shows the total power consumption. It features high reliability, small volume, light weight, beautiful appearance, advanced technology, and 35mmDIN standard guide rail installation, etc. It has good anti-electromagnetic interference, low power consumption, high precision, high overload, high stability, electricity-stolen, and long life. This table is suitable for the measurement of rated frequency 50 Hz or 60 Hz three-phase AC active electricity, used for fixed installation indoors, applied to the environment temperature is -25 °C ~ 55 °C, relative humidity is ≤ 95%, and in the air does not contain corrosive gases and avoid dust, mold, salt fog, condensation, insects, etc.