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Repsun Lightning Protection Technology Co., Ltd.

We provide customers with quality products and provide high-quality services.


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Frequently Asked Questions

1: Why power SPD requires Fuse or Circuit breaker at the upstream of main supply?

Due to the fact that most of our SPDs have plastic housing and parts, in the event of a SPD short-circuited or overloaded, large amount of heat will be dissipated, the plastic housing or parts might become distorted, this might prevent the releasing mechanism to operate as SPD original design, and fail to disconnect from the main power. Therefore for double safety reason, additionally at the power SPD upstream we also installed a fuse or circuit breaker.

But REPSUN SPD doesn’t require Fuse or CB as there is a back-up fuse in REPSUN SPD already for double safety.