Overvoltage and Undervoltage Protector

Overvoltage and undervoltage protectors are mainly used in the incoming lines of residential household distribution boxes or distribution lines that need to protect single-phase electrical equipment, such as power supply systems in homes and small offices, providing overvoltage and undervoltage protection for various electrical equipment such as air conditioners, refrigerators, and televisions.Generally installed at the incoming line of the household distribution box in a residential building or at the front end of the distribution line where single-phase electrical equipment needs to be protected.

Introduction to the overvoltage and undervoltage delay protector for three-phase 4P63A incoming line:

Functional features
Overvoltage and undervoltage protection: When overvoltage or undervoltage occurs in a three-phase line, it can quickly cut off the circuit to protect the equipment at the back end. The overvoltage action value is 460V±5V, and the undervoltage action value is 300V±5V.
Automatic reset: Once the voltage returns to the normal range, the protector will automatically reconnect the circuit after the specified delay time. The recovery delay time is 60 seconds.
Other protections: Some products also feature protection functions such as phase failure, neutral line failure, and three-phase imbalance. The 3P+N system can monitor and protect against various fault conditions.