The TSP-WG6-xxxVAC-10A-01 is a three-stage transient protection module which provides overvoltage and surge current protection for single phase supply lines. The first stage provides transient rise time reduction. The second stage provides the primary transient voltage clamping and a LED circuit to indicate that the device is still fully functional. This second stage will be removed from the circuit well before the useful life of the device has expired. This will provide ample time for the device to be replaced ensuring continued protection of the connected equipment. The third stage is the most rugged and provides the bulk of the transient protection.