Abstract: A high current device for dense plasma focus (DPF) is developed. It uses eight 12 μF pulse capacitors with low inductance and low resistance as primary energy storage bank, and each capacitor is connected with a large current high voltage switch. When the switch synchronous trigger system triggers the eight high voltage switches synchronously, high current is delivered into the load through eight plate transmission lines. The pulse capacitor and the high voltage switch are integrated. With such a structure, the device is compact and it has a minimized connection inductance. The plate transmission line is a sector structure, which can make the transmission inductance smaller, and help the transmission of high current. The following technical parameters of the device were achieved on the dummy load: output current amplitude of ~500 kA when primary capacitors are charged with 20 kV.