The paper describes the sealed-off pseudospark switches that have recently been developed for various pulsed power applications. The switches with the trigger unit based on a flashover are intended for a use in fast electric circuits at a pulse current of the order of 100 kA in microsecond range of the pulse duration. The switches with the trigger unit based on an auxiliary glow discharge have been designed for fast current circuits with a moderate range of current (of the order of 10 kA) and high pulse repetition rate.
