MPPT Charge Controllers


TriStar MPPT Controller


Morningstar’s TriStar MPPT solar controller with TrakStar Technology™ is an advanced Maximum Power Point Tracking (MPPT) battery charger for off-grid photovoltaic (PV) systems up to 3kW. The controller provides the industry's highest peak efficiency of 99% and significantly less power loss compared to other MPPT controllers.


The TriStar MPPT features a smart tracking algorithm that maximizes the energy harvest from the PV by rapidly finding the solar array peak power point with extremely fast sweeping of the entire I-V curve. This product is the first PV controller to include on-board Ethernet for a fully web-enabled interface and includes up to 200 days of data logging. 


Key Features and Benefits

  • Maximizes Energy Harvest
    • Better peak power point tracking than other MPPT controllers.
    • Very fast sweeping of the entire I-V curve.
    • Recognition of multiple power points during shading or mixed PV arrays.
    • Excellent performance at sunrise and low solar insolation levels.

  • Extremely High Reliability
    • Robust thermal design and no cooling fans.
    • Parallel circuit design provides less stress and longer life for electronic components
    • No mechanical relays
    • Extensive electronic protections including PV short circuit protection.
    • Epoxy encapsulated inductors and conformally coated printed circuit boards

  • Very High Efficiency
    • Peak efficiency of 99%.
    • Proprietary tracking algorithm minimizes power losses.
    • Low self-consumption.
    • Continuous operation at full power to 45°C without need to de-rate.
    • Selected electronic devices with higher ratings to minimize losses from heating.

  • Extensive Networking and Communication Capabilities
    • Enables system monitoring, data logging abd adjustibility. Uses open standard MODBUS protocol and Morningstar's MS View software.
      • Meterbus: communications between compatible Morningstar products.
      • Serial RS-232: connection to a personal computer.
      • EIA-485: communications between multiple devices on a bus.
      • Ethernet: fully web-enabled interface to a local network or internet; view from a web browser or send email/text messages.

  • Metering and Data Logging
    • Optional TriStar meter and remote meter provides detailed operating data, alarms and faults.
    • Three LED’s display system status.
    • Up to 200 days of data logging via meters or communications ports.

  • Certified to IEC 62093



  • Hybrid (PV + Second Energy Source)
  • Hydro
  • Railroad Signalling
  • Residential
  • Rural Electrification & Solar Home System
  • Security and Instrumentation
  • Small Wind
  • Solar
  • Telecommunications






Type of Regulation



Load Current Rating

30 Amps

45 Amps

60 Amps

Load Control (LVD)


 System Voltage

12, 24, 36, 48 Volts

Output Voltage

8 .. 72 Volts

Nominal Maximum PV Power Input

400 / 800 / 1600 Watts

400 / 1200 / 2400 Watts

800 / 1600 / 3200 Watts



Digital Display


Adjustable Regulation Voltage


Data Port


Max Wire Size



H35.0 x W13.0 x D14.2 cm


4.2 kg



Temp Rating

-40 .. +45 degC

Self Consumption

2.7 Watts

4 Watts

4 Watts


5 Years


TS-M-2, TS-RM-2, HUB-1, RD-1


More Information / References

  Download - TriStar MPPT - Datasheet

  Download - TriStar MPPT - Operation Manual

The NEW ProStar MPPT™ is a mid-range MPPT solar charge controller with TrakStar Technology™ that provides  maximum power point tracking (MPPT) battery charging for off-grid photovoltaic (PV) systems up to 1100 watts. Available with and without advanced built-in meter. This device is ideal for industrial and residential applications.


Key Features and Benefits

  • High Reliability
    • Conformally coated circuit board and corrosion resistant terminals.
  • Maximizes Energy Harvest
    • Using TrakStar MPPT Technology to determine and adjust to the true maximum power point as solar insolation changes throughout the day.
  • High Efficiency
    • At low, medium and high power levels.
  • Data Logging
    • Up to 256 days of data logging.
  • Low Noise Design
    • Meets US Federal Communications Commission Class B specifications.
  • High Load and automatic PV-based Lighting Control
    • Field adjustable multi-event load control enables powerful options for PV lighting systems.
  • MODBUS Communications
    • Solar Industry Standard MODBUS communication protocol allows for easy programming, control, remote data access and charge synchronisation.
  • High Strength
    • Polycarbonate case and extruded aluminium heatsink.
  • Built-In Self-Diagnostics
    • Continuous monitoring and reporting of any errors through its status LEDs, optional display or communication port.
  • Meter
    • Allows adjustments to charging, lighting and load control settings without a computer.




  • Leisure (Caravan & Boating)
  • Lighting
  • Railroad Signalling
  • Residential
  • Rural Electrification & Solar Home System
  • Security and Instrumentation
  • Small Wind
  • Solar
  • Transportation and Traffic




PS-MPPT-25 /
PS-MPPT-25M (w/ Meter)

PS-MPPT-40 /
PS-MPPT-40M (w/ Meter)

Max Battery Current

25 Amps

40 Amps

Load Current Rating

25 Amps

30 Amps

Max. PV Open Circuit Voltage (Voc)

120V (without damage to unit)

Nominal Battery Voltage

12V or 24V


 Nominal Max. Operating Power

12V Battery: 350W @ 45degC

24V Battery: 700W @ 60degC

12V Battery: 550W @ 45degC

24V Battery: 1100W @ 60degC

Peak Efficiency


Battery Voltage Range

10 to 35V

Voltage Accuracy

<= 0.1% (+/-50mV)



Normal = 0.6W / Maximum = 1W

LED Indications

(1) Status, (3) Battery S.O.C.

Transient Surge Protection

Solar, Battery, Load

Operating Temperature Range

-40 to +60 degC

Meter Operating Temperature Range

-20 to +60 degC

Storage Temperature

-40 to +80 degC


100% (non-condensing)


Conformal coating, marine-rated terminals


More Information / References

  Download - ProStar MPPT - Datasheet

  Download - ProStar MPPT - Operation Manual

MorningStar - SS-MPPT-15L - SunSaver MPPT

Morningstar’s SunSaver MPPT Solar Controller with TrakStar Tehnology™ is an advanced maximum power point tracking (MPPT) battery charger for off-grid photovoltaic (PV) systems. The controller features a smart tracking algorithm that maximises the energy harvest from the PV and also provides load control to prevent over-discharge of the battery.

The SunSaver MPPT is well suited for both professional and consumer PV applications including automatic lighting control. Its charging process has been optimised for long battery life and improved system performance. This product is epoxy encapsulated for environmental protection, may be adjusted by the user via four setting switches or connection to a personal computer, and has an optional remote meter and battery temperature sensor. 

Key Features and Benefits

  • Maximises Energy Harvest
  • Use of High Voltage Modules
  • Higher Voltage PV Arrays
  • Lower System Cost
  • Load Control
  • Personal Computer Connectivity
  • Smaller Size
  • Highly Reliable
  • Extensive Electronic Protections
  • Longer Battery Life



  • Leisure - Boating / Caravan
  • Lighting
  • Railroad Signalling
  • Residential
  • Rural Electrification / Solar Home System
  • Security & Instrumentation
  • Transportation & Traffic





Peak Efficiency


Nominal Battery Voltage

12 or 24 V

Maximum Battery Charging Current

15 A

Battery Voltage Range 7 - 36 V
Nominal Maximum Operating Range

12 Volt Battery: 200 Watts
24 Volt Battery: 400 Watts

Maximum PV Open Circuit Voltage

75 Volts
(Exceeding Maximum PV Open Circuit Voltage may damage the controller)

Rated Load Current

15 A


35 mA

Transient Surge Protection 4 x 1500 Watts
Operating Temperature Range

-40 to +60 degC

Electronic Protections PV: Overload, Short Circuit, High Voltage
Load: Overload, Short Circuit
Reversed Polarity: Battery, PV, Load
Lightning and Transient Surges
High Temperature
Reverse Current at Night
Battery Types Gel, Sealed, AGM, Flooded
4-Stage Charging Bulk, Absorption, Float, Equalise (optional)
Dimensions H16.9 x W6.4 x D7.3 cm
Weight 0.6 kg
Power Terminal 16mm2 / 6 AWG


More Information / References

Download - SunSaver - MPPT Solar Controller Datasheet


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