MorningStar ProStar MPPT 40A 12/24V, LVD & Meter


MorningStar PS-MPPT-40M, 12 or 24 Volt, 40A Maximum Power Point Tracking Solar Regulator with Meter



The Prostar MPPT™ solar charge controller with TrakStar Technology™ is an advanced maximum power point tracking (MPPT) battery charger for off-grid photovoltaic (PV) systems up to 1100 watts. This controller allows multiple modules in series for 12V and 24V battery systems. Detailed battery programming options allow for advanced battery support for the latest Lithium, Nickel Cadmium, and Lead Acid






Max. Battery Current

40 Amps

Load Current Rating

30 Amps

Max. PV Open Circuit Voltage (Voc)

120 Volts (without damage to unit)

Nominal Battery Voltage

 12V or 24V

Nominal Max. Operating Power*

12 volt battery

550W @45C

24 volt battery

1100W @60C

Peak Efficiency


Battery Voltage Range


Voltage Accuracy

<= 0.1% +/- 50mV


normal: 0.6W; maximum: 1W

LED Indications

(1) status, (3) Battery S.0.C.

Transient Surge Protection

solar, battery, load



Operating Temperature Range

-40 C to +60 C


Meter Operating Temperature Range

-20 C to +60 C


Storage Temperature

-40 C to +80 C



100% non-condensing



Conformal coating, marine-rated terminals



Product Benefit

Product Benefit

  • High Reliability  –  conformally coated circuit board and corrosion resistant terminals.
  • Automatic PV Based Lighting Control – field adjustable, multi-event load control enables powerful options for PV lighting systems.
  • Maximizes Energy Harvest  –  using TrakStar MPPT Technology to determine and adjust to the true maximum power point as solar insolation changes throughout the day.
  • MODBUS Communications  – Solar Industry Standard MODBUS communications protocol allows for easy programming, control, remote data access and charge synchronization.
  • High Efficiency  – at low, medium, and high power levels.
  • High Strength  – polycarbonate case and extruded aluminium heatsink.
  • Data Logging  – up to 256 days of detailed power and load data.
  • Self Diagnostics  – continuous monitoring and reporting of any errors through its status LED’s, optional display or communication port.
  • Low Noise Design  – meets US Federal Communications Commission Class B specifications.
  • Meter  – allows adjustments to charging, lighting, and load control settings without a computer.


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