Morningstar TriStar 45 Amp 12/24/48 Volt Solar Charge Controller

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Quick Overview

  • 45 Amp solar charge controller
  • 12, 24, & 48 Volt compatibility
  • Pulse width modulation (PWM) charging
  • 5 year warranty
  • Morningstar TriStar 45 Amp 12/24/48 Volt Solar Charge Controller

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    Morningstar TriStar PWM Charge Controllers

    The TriStar pulse-width modulation (PWM) controllers can operate as solar charge controllers, load controllers, or diversion regulators in 12, 24 or 48 VDC systems. They can also be custom programed for 36 VDC. Two or more controllers can be used to provide multiple functions. PWM may be changed to on/off operation to prevent telecom noise.

    The TS-45 and TS-60 have current ratings of 45 A and 60 A. The TS-60M has the digital meter display installed at the factory. Seven different set points are selectable via DIP switches for plug-and-play operation. An RS-232 communications port enables PC or laptop connection to adjust controller set points, to download internally-logged data, or to configure detailed PC data logging. A PC can communicate with the TriStar via open-standard MODBUS protocol and Morningstar's MS View software. The RSC-1 communications adapter can be used to convert the RS-232 serial connector to TIA-485 to be included in an TIA-485 network.

    The TriStar also has a lighting control feature with 7 DIP-switch presets or custom programmed settings with up to two ON-OFF time periods after/before dusk and dawn.

    An optional TS-M-2 Digital Display can be mounted on the front of the controller or up to 100' away using four-conductor phone cable with RJ-11 jacks. The meters can provide in-depth system information, including 60 days of internally-logged data. They can also be connected to a MeterHub network with the MeterHub (HUB-1) to be displayed on a TriStar Meter or networked with a Relay Driver for relay switch operation. Battery temperature compensation may be added with the optional Remote Temperature Sensor (RTS). See the Morningstar Accessories page for more information on the metering and other accessories for these controllers

    Dimensions: 10.25"H x 5"W x 2.8"D. Weight: 3.5 lbs. 5-year warranty. Listed to UL 1741 for U.S.A. and Canada.


  • High Reliability – Large heat sink and conservative design enables operating at full ratings to 60°C. No need to de-rate.

  • More Power – Ratings to 60A at 48VDC will handle solar arrays up to 4kW.

  • Communications Capability – RS-232 connects to a personal computer for custom settings, data logging and remote monitoring and control.

  • Fully Adjustable – DIP switch provides user with a choice of 7 different digital presets and custom settings via RS-232.

  • Extensive Electronic Protections – Fully protected against reverse polarity, short circuit, overcurrent, high temperature and overvoltage.

  • Simple Mechanical Interface – Larger power terminals and conduit knockouts . Extra space for wire turns. Fits on power panels.

  • More Information – 3 LED’s to indicate status, faults and alarms. Optional meter displays extensive system and controller information, automatic self-test and reset capabilities. Meter connection via RJ-11 phone jack.

  • Easy to Reset – Pushbutton provides manual reset and stop/start battery equalization or load disconnect.

  • Low Telecom Noise – DIP switch setting will change PWM to “On-Off” battery charging.

  • Better Battery Charging – Connecting battery sense wires and optional remote temperature sensor will improve control accuracy. Constant voltage series PWM algorithm increases battery capacity and life.

    Morningstar’s TriStar Controller is a three-function controller that provides reliable solar battery charging, load control or diversion regulation.


    Series Tristar
    Manufacturer Part Number TS-45
    Warranty 5-years
    Description TriStar 45 charge controller
    Max Current 45.0
    Max Power 12VDC 540.0
    Max Power 24VDC 1080.0
    Max Power 48VDC 2160.0
    System Volatge 12, 24 or 48
    NEMA Rating NEMA 1 (indoor)
    Length 12.5  IN
    Width 7.5  IN
    Height 3.25  IN
    Weight 4.5  LB

    Electrical Specification:

    Rated solar, load or diversion current 45A
    System Voltage 12-48V
    Accuracy 12/24V ≤0.1% ±50mV, 48V ≤0.1% ±100mV
    Minimum voltage to operate 9V
    Maximum solar voltage (Voc) 125V
    Self-consumption Controller <20mA, Meter 7.5mA
    Length 12.5  IN
    Width 7.5  IN
    Height 3.25  IN
    Weight 4.5  LB

    Electronic Protections
    • Reverse polarity protection (any combination)
    • Short-circuit protection
    • Overcurrent protection
    • Lightning and transient surge protection using 4500W transient voltage suppressors
    • High temperature protection via automatic current reduction or complete shut down
    • Prevents reverse current from battery at night

    • TriStar Meter — 2 x 16 display mounts to controller and provides system and controller information, data logging, bar graphs and choice of 5 languages
    • TriStar Remote Meter — Includes 30 meters of cable for mounting meter away from the controller
    • Remote Temperature Sensor — Provides temperature compensated charging by measuring temperature at the battery (10 meter cable)

    • CE Compliant
    • ETL Listed (UL 1741)
    • cETL (CSA-C22.2 No.107.1-95)
    • TUV (IEC 62109-1)
    • Complies with U.S. National Electric Code
    • Manufactured in a certified ISO 9001 facility
    • MET Labs (EN 60335-1, EN 60335-2-29)
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