Model SPA standing submersible pump is vastly used for shipping, mine enterprises, farmland and construction site. It features its compact size, ligh weight, stainless steel sive and running short time when absence of water. (Also can be assembled with 3-phase motor )The float switch can automatically control on and off with the change of the liquor level. The protector in the motor can automatically cut off the power when it overheated or overcurrented, thus guarantee the security and reliability of pump's operation even in the atrocious environment.