Select appropriate dipped varistors: 
Different types of WEET Radial Leaded Metal Oxide Varistor have different protection voltage ranges. Select the type of varistor that can meet the circuit protection requirements based on specific application requirements. 

Connect multiple varistors in series: 
When the expected protection voltage exceeds the rated voltage of a single Radial Leaded metal oxide varistors (MOV), it is possible to consider connecting multiple varistors in series to increase the protection voltage. However, it should be noted that series connected varistors may increase the overall resistance value, affecting the normal operation of the circuit. 

Parallel connection of other components:
In addition to using radial metal oxide varistors, they can also be connected in parallel with other components such as capacitors, voltage regulators, etc. to provide a more comprehensive protection circuit. 

Control current limiter: 
In circuits protected by radial leaded varistors, adding a current limiter can control the flow of current during overvoltage. 

WEET shares some photos about 14D varistors Manufacturers Suppliers and 20D Series Metal Oxide Varistors MOV.