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The SunGuard™ is a single module, compact PWM solar charge controller for small systems, ideal for both professional and consumer use. With SunGuard, there’s no reason not to insist on Morningstar quality with any system design—no matter how small.

“Rock solid, potted so waterproof, long
track-record…great charge controller for a small system”

Key features and benefits

  • Rugged design—100% solid state, epoxy encapsulated; rated for 25%
    overcurrents (no need to de-rate)
  • Longer battery life—series design PWM charging (instead of shunt)
    with temperature compensation, low self-consumption
  • Easy to install—outdoor rated connecting wires make a waterproof
    connection to the solar module and battery

Specifications and Certifications

Model SG-4
*Input power can exceed Nominal Operating Power. Controller will limit and provide its rated continuous maximum output current into batteries.
Charge Rating 4.5 amps
Max. PV Open Circuit Voltage (Voc) 30 volts
Nominal Battery Voltage 12V
Self-Consumption 6mA
Voltage Accuracy 60mV
Operating Temperature Range -40 C to +60C
Warranty 5 Years
CE and RoHS compliant Yes
Manufactured in a Certified ISO 9001 Facility Yes

Operation Manuals


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