Morningstar SunGuard Solar Controller SG-4

Price: $27.99 Quantity: Product #: IMSC839 Mfg #: SG-4

Ships in 5 - 6 business days.

Morningstar's SunGuard™ is the world's leading single module controller. We have combined all the advantages of our SunSaver charging circuit with less expensive packaging to provide an economical controller for small PV systems.

Key Features and Benefits

  • Series design (not shunt)
  • 100% solid state
  • True 0 to 100% PWM duty cycle
  • Setpoint accuracy to 60 mV
  • Temperature compensation
  • Rated for 25% overloads
  • No need to derate
  • Lightning protected with 1500 W transorbs
  • Self-consumption is 6 mA
  • Fully encapsulated in epoxy potting
  • ABS plastic, impact-resistant case
  • Outdoor rated, Hypalon connecting wires
  • 5 Year Warranty


  • Rated Solar Current: 4.5A
  • Rated Loan Current*: None
  • System Voltage: 12V
* There is no load connection on the SunGuard


Morningstar's SunGuard controller is a one module solar controller for professional and leisure markets.


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