Will the varistor be short-circuited if it is broken

There are many types of varistors, such as the 7D resistance circuit overvoltage protection varistor of Weidi Industry, which is an important circuit protection component of the varistor. However, sometimes the varistor will be damaged due to various reasons

Generally, there are two possibilities for the failure and damage of the varistor: open circuit and short circuit.

1. Open circuit means that if it is disconnected, the electricity will be cut off here. If it cannot pass, nothing will come out. This has little impact on the following components.

2. Short circuit, whether it is positive or negative, its resistance value is 0. It is a wire, and electricity will always pass through. Because there is no varistor, the incoming power may become larger, and the latter stage cannot withstand such a large voltage, thus burning the latter stage, which may be more serious.

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