Automatic Over/Under Voltage & Overload Protector, 220V 63A DIN-Rail Mount with LED Display & Auto Reconnect

Keep your home and appliances safe from sudden voltage or current fluctuations with this automatic over/under voltage and overload protector. Designed for single-phase systems, it provides three-in-one protection—over-voltage, under-voltage, and overload—acting within 0.1 seconds to prevent damage.

With an adjustable auto-reconnect delay (1–500 seconds), the device automatically restores power once the voltage returns to a safe level. It offers a protection range of 230–300V (over-voltage), 80–210V (under-voltage), and 1–63A (overload), ensuring reliable operation in all situations.

Built to handle surges up to 440V, the device will sacrifice itself in extreme cases—keeping your appliances completely safe. Ideal for homes, offices, and workshops, it’s compact, easy to install with a DIN-rail mount, and features a clear LED display for live voltage monitoring.

Specifications:

Voltage protection range: 0- 450V for 40A; 0- 600V for 50A/63A.
Impulse withstand voltage: 4KV (in compliance with safety standard for electrical appliance of category).
Normal use conditions: Ambient air temperature shall not be more than +55°C and not less than -20° C and the 24h average temperature shall not be more than +35° C.
Altitude of the installation place shall not exceed 2000m. 
Atmospheric conditions: Humidity