Over-voltage protection Under-voltage protection Over-current protection Automatic recovery Voltage display (voltage measurement) Current display (current measurement) Wattmeter kWh energy meter power consumption Installation: 35mm DIN rail Rated supply voltage: AC 220V Operating voltage: AC 80–400V (single phase) Rated frequency: 50/60 Hz Kilowatt-hour protection value: 1–9999/OFF Rated current: 40/63A (subject to product label) Reset/start delay time: 1–600s Voltage measurement accuracy: 2% (not exceeding 2% of the overall range) Rated insulation voltage: 400V Output contact: 1NO Electrical life: 100,000 Mechanical life: 1,000,000 Protection degree: IP20 Pollution degree: 3 Operating temperature: -50°C to 55°C Humidity: ≤50% at 40°C (without condensation) Storage temperature: -30°C to 70°C Color: As shown Material: Plastic Package Contents: 1 x Adjust Voltage Relay Only the above package content, other products are not included Note: Light reflection and different displays may cause the color of the item in the picture to be slightly different from the real thing. Measurement allowed error is +/- 1–3 cm.