Morningstar's TriStar Controller is a three-function controller that provides reliable solar battery charging, load control or diversion regulation. The controller operates in one of these modes at a time and two or more controllers may be used to provide multiple functions. The TriStar uses advanced technology and automated production to provide exciting new features at a competitive cost. The optional TriStar meter is the most sophisticated and informative controller meter on the market. The controller is UL listed and is designed for both solar home systems and professional applications.

Highest Reliability

Large heat sink and conservative design enables operating at full ratings to 45oC. No need to de-rate

Simple Mechanical Interface

Larger power terminals and conduit knockouts . Extra space for wire turns. Fits on power panels.

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

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.

Fully Adjustable

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

Easy to Reset

Push button provides manual reset and stop/start battery equalization or load disconnect.

Extensive Electronic Protections

Fully protected against reverse polarity, short circuit, overcurrent, high temperature and overvoltage. Low Telecom Noise

DIP switch setting will change PWM to "On-Off" battery charging.

Charge Control
  • Constant voltage series PWM design to provide highly efficient battery charging
  • 4-stage charging to increase battery capacity and life: bulk charge, PWM regulation, float and equalize
  • Parallel for larger solar arrays up to 300 amps or more
Electrical Specifications
  • Rated solar, load or diversion current:
    TriStar-45: 45A
    TriStar-60: 60A
    System Voltage: 12-48V
  • Accuracy
    12/24V: =0.1% ±50mV
    48V: =0.1% ±100mV
  • Min. voltage to operate: 9V
  • Max. solar voltage (Voc): 125V
  • Self-consumption:
    Controller: <20mA
    Meter: 7.5mA
Environemental Specifications
  • Operating ambient temperature:
    Controller: -40oC to +45oC
    Meter: -40oC to +60oC
  • Storage temperature: -55oC to +85oC
  • Humidity: 100% (non-condensing)
  • Tropicalization: Conformal coating on both sides of all printed circuit boards

Charge Control
  • Starts large loads including motors and pumps with no damage to controller
  • Allows inrush current to 300 amps
  • Electronic short-circuit and overload protection with automatic reconnect
  • LVD is current compensated and has a delay to avoid false disconnects
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
Mechanical Specifications
  • Dimensions: Height: 26.0 cm/10.3 inch
    Width: 12.7 cm/5.0 inch
    Depth: 7.1 cm/2.8 inch
  • Weight: 1.6 kg/3.5 lb
  • Humidity: 100% (non-condensing)
  • Largest Wire: 35 mm2/2 AWG
  • Conduit Knockout: Eccentric 2.5/3.2 cm 1.0/1.25 inch)
  • Enclosure: Type 1, indoor rated
Diversion Control
  • May be used for solar, wind or hydroelectric
  • To protect against battery overcharge, excess energy is diverted from primary battery to a secondary battery or alternate DC resistive load
  • PWM reduces power into diversion load during overcurrent conditions
TriStar Options
  • 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
  • UL Listed (UL 1741)
  • cUL (CSA-C22.2 No.107.1-95)
  • Complies with U.S. National Electric Code
  • Manufactured in a certified ISO 9001 facility

Authorized Distributors