A 10kV solidstate switch for high pulse power application has been developed. The prototype makes use of switches made of arranged in series. The output voltage can be adjusted from 1 to 10kV and the pulse width can be varied from 2 to 110 microseconds, the pulsing frequency in the initial design can be changed from 1Hz to 4kHz. Experimental results show that the solidstate switch can operate in the frequency up to 8.6kHz and in the voltage up to 14kV. The typical rise time is less than 300ns and the typical fall time is about 1.25μs.