Hunter Sprinkler PSR53 Triple Pole or Single Throw Pump Start Relay for Up to 10 HP Available in a choice of three models to accommodate a variety of power sources and landscape needs Flying wire leads allow for effortless 24V connections For 120 VAC pumps up to 3 hip, 230 VAC pumps up to 75 hip, or 230 VAC pumps up to 10 hip (three phase)