Variable frequency driver
Pump driver on-board assembled for a single pump with variable speed. General electrical supply could be single-phase or 3-phase (~3x230/~3x400) for 3-phase pumps up to 23A.
It can be mounted individually or in groups of pumps communicated and operating in master-slave mode with alternated sequence of operation. It will be installed over the the motor through a wide range of fastenings.

Additional information: