Browse the 30 amp solar charge controllers below to find the one that best meets your needs for your application. They all come in metered and non-metered versions. The ProStar and EcoPulse controllers use PWM charging technology so they should be matched with PV arrays that do not exceed the controller’s current rating. The TriStar MPPT and EcoBoost MPPT use maximum powerpoint tracking charging technology, so they can be installed with oversized solar arrays that exceed their charge ratings, but their Voc ratings must not be exceeded. Morningstar’s Professional Series controllers are available globally, while its Essential Series is only offered outside the US and Canada.