The TC-10A is a high speed high energy multi stage transient clamp providing precision clamp protection for electrical/electronic equipment. The TC-10A has a unique protection circuit that gives true protection in all three possible fault modes with an additional common mode filter that filters out the clamped waveform to reduce the rate of Voltage rise providing high level protection for sensitive electronic equipment. The unique circuitry ensures that protection is guaranteed in all three modes giving total protection from both common mode and differential mode fault conditions.