Summary: Selection of self-resetting overvoltage and undervoltage protector 

Keywords: self-resetting overvoltage and undervoltage protector, three-phase four-wire self-resetting overvoltage and undervoltage protector, self-resetting overvoltage and undervoltage protector 4P, self-recovering overvoltage and undervoltage protector, overvoltage protector, EMC test 

First, understand the composition of the self-recovery overvoltage and undervoltage protector. The main components of the self-recovery overvoltage and undervoltage protector are: housing, electronic component board, relay, wiring device, and conductive brush wire. After understanding the product composition, it is relatively easy to choose the right product. The quality of a product can be seen from the following aspects: 

If the power consumption of the whole electromagnetic relay is about 1.5W, and the magnetic latching relay is about 0.8W, the test voltage is AC230V (single-phase self-resetting overvoltage and undervoltage protector). If you are a wealthy person, you should choose the electromagnetic relay type, otherwise you should choose the magnetic latching type self-resetting overvoltage and undervoltage protector.