Replacement solar pump controller for the 3HR300-100, 3HR500-120, 3HRI300-100 and 3HRI500-120 solar pumps. The controller sits above ground between your solar panels and the pump: it soft-starts the brushless DC motor and protects it against under-voltage, over-voltage, overload and running dry.
- Suits: 3HR300-100, 3HR500-120, 3HRI300-100 and 3HRI500-120
Please check your pump model before ordering – controllers and boards are matched to the pump size. Send us a photo of the pump or controller label if you are unsure.


