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Morningstar TriStar MPPTmorningstar tristar mppt


The Morningstar TriStar MPPT solar controller with TrakStar Technology TM 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 Morningstar 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 Benefeits

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Maximizes Energy Harvest

Our TrakStar MPPT Technology features:

  • 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

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Extensive Networking and Communications Capabilities

Enables system monitoring, data logging and adjustability. Uses open standard MODBUSTM 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

System Status

System Status

Data Logging

Data Logging

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Technical Specifications

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Maximum Battery Current 45 A 60 A
Nominal Maximum Solar Input 12 V 600 W 800 W
24 V 1200 W 1600 W
48 V 2400 W 3200 W
Peak Efficiency 99%
Nominal System Voltage 12, 24, 36 or 48 VDC
Max. Solar Open Circuit Voltage 150 VDC
Battery Operating Voltage Range 8-72 VDC
Maximum Self-consumption 4 W
Transient Surge Protection 4500 W/port


Electronic Protections

  • Solar: Overload, Short Circuit, High Voltage
  • Battery: High Voltage
  • High Temperature
  • Lightning and Transient Surges
  • Reverse Current at Night


Battery Charging

  • Charging algorithm 4-stage
  • Charging stages Bulk, Absorption, Float, Equalize
  • Temperature Compensation
    • Coefficient –5mV/°C/cell (25° ref)
    • Range –30°C to +80°C
    • Set points Absorption, Float, Equalize, HVD

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  • Dimensions
    • 29.1 x 13.0 x 14.2 cm
    • 11.4 x 5.1 x 5.6 inch
  • Weight 4.2 kg / 9.2 lbs.
  • Max. Wire Size 35 mm2 / 2 AWG
  • Conduit knockouts M20; 1⁄2, 1, 1 1⁄4 inch
  • Enclosure
    • Type 1 (indoor and vented)
    • IP20

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  • Ambient Temperature –40°C to +45°C
  • Storage Temperature –55°C to +100°C
  • Humidity 100% non-condensing
  • Tropicalization
    • Epoxy encapsulation
    • Conformal coating
    • Marine rated terminals

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Communication Ports

MeterBus Yes Yes
RS-232 Yes Yes
EIA-485 No Yes
Ethernet No Yes



  • TriStar Meter-2 (TS-M-2)
  • TriStar Remote Meter-2 (TS-RM-2)
  • Meter Hub (HUB-1)
  • Relay Driver (RD-1)



  • CE Compliant
  • ETL Listed (UL1741)
  • FCC Class B Part 15 Compliant
  • Complies with (NEC) U.S. National Electric Code
  • RoHS Compliant
  • Manufactured in a certified ISO 9001 facility