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Morningstar SunGuard SG-4-12 Charger Controller (12V, 4A)

 [SunGuard SG-4-12]


Morningstar SunGuard SG-4-12 Charger Controller (12V, 4A)

Morningstar SunGuard SG-4-12 Charger Controller (12V, 4A)

Morningstar’s SunGuard is the most advanced small, economical solar charge controller on the market today.

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SunGuard’s technology provides:

  • Exceptional Reliability
  • PWM Battery Charging
  • Consistent High Quality
  • Low Cost

The SunGuard is able to match the quality and performance of the world-leading SunSaver controllers because:

  • SunGuards are made on the same high speed, automated production lines
  • SunGuards use the same charging circuit
  • SunGuards use the same high quality components


  • ISO 9002 quality programs
  • 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


  • SunGuard’s PWM charging compared to On-Off solar regulators:
  • Typically 30% more solar energy into the battery per day
  • Average battery State-of-Charge is 90 – 95% compared to 55 – 60% for On-Off regulators

Specifications of SG-4-12

Mechanical Specifications

Wire size #16 AWG

ABS plastic case

Epoxy encapsulated

Weight is 3 oz (0.09 kg)


Electrical Specifications

Rated Solar Input   

4.5 Amps

Max. Input ( 5 mins)

5.5  Amps

System Voltage

12 Volts

Max. Solar Voltage

30 Volts

Regulation Voltage

14.1 Volts


60 mV


6 mA

Temp. Compensation

-28 mV/

Reserve Current Leakage

>10 uA

Operating Temperature

-40 to +85

Related Products:SHS-6, PS-15, PS-30PS15M-48V, SL10L-12V, SL10L-24V, SL20-12V, SL20L-24V, SS-6, SS-6L, SS-10, SS-10L, SS-10-24VSS-10L-24V, SS-20L, SS-20L-24V, SS-DUO-12V-25A, PL20, PL40, PL60, XW-MPPT60-150, SS-MPPT, MPPT-45, MPPT60, CURRENT SHUNT 1, PLI-RS232, PLS2, PLT, WYS CABLE(PL20/PL40) , WYS CABLE(PL60) ,  CURRENT SHUNT 2

Note : All Prices We Presented on the Website are Including GST

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This product was added to our catalog on Friday 04 May, 2012.
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