OpenSprinkler › Forums › Hardware Questions › connecting open sprinkler to 3phase centrifugal pump › Re: Re: connecting open sprinkler to 3phase centrifugal pump July 18, 2014 at 8:55 pm #27564 RayKeymaster 7.5kW, 10HP? That’s a beefy pump. The Orbit one clearly doesn’t work. You may have to search ‘pump start relay 10HP’ and see the available options.
