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Morningstar SunGuard SG-4 PWM Charge Controller

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  • SG-4
  • SunGuard SG-4
Morningstar Corporation
MSRP: $39.95
$34.00 (You save $5.95)
SKU: ALG-020-01215
Condition: New
Weight: 0.30 LBS
Shipping: Free Shipping

 Product Description

Morningstar SunGuard 4.5A PWM Charge Controller - SG-4

Morningstar, PWM Charge Controller, 4.5A, 12VDC, #16 AWG, SG-4

Morningstar’s SunGuard is the world’s leading single module controller. Morningstar has combined all the advantages of their SunSaver charging circuit with less expensive packaging to provide an economical controller for small PV systems.

Morningstar's SunGuard SG-4 is the most advanced small, economical solar charge controller on the market today. Providing 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 as they are made on the same high speed, automated production lines, use the same charging circuit, and uses the same components.


  • Advanced, Small & Economical - 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. Self-consumption is 6 mA.
  • Protected & Safe - Lightning protected with 1500 W transorbs. Fully encapsulated in epoxy potting. ABS plastic, impact-resistant case. Outdoor rated, Hypalon connecting wires.
  • Advantages -SunGuard's SG-4 PWM charging compared to most other On-Off solar regulators on the market: 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.


General Information  
Manufacturer: Morningstar
Product Line:
Model ID:
Certifications and Safety Ratings: ce.gif


Mechanical Data
Technology: Pulse Width Modulation (PWM)
4.70 x 3.30 x 2.70 inches (SG-4 Dimensions)
Weight: 0.30 lbs
Casing: ABS Plastic Case (Gray)
Wire Size: #16 AWG
Encapsulation: Epoxy Encapsulated


Electrical Data
System Voltage: 12 Volts
Rated Solar Input:
4.50 Amps
Maximum Input (5 min.): 5.50 Amps
Maximum Solar Voltage: 30 Volts
Regulation Voltage: 14.10 Volts
Accuracy: 60mV
Self-Consumption: 6mA
Temperature Compensation: -28mV/°C
Reverse Current Leakage: <10 µA
Operating Temperature: -40°C to +85°C


Document Type
logo-adobe-pdf-2.jpgMorningstar SunGuard SG-4 Specifications Specifications
logo-adobe-pdf-2.jpgMorningstar SunGuard SG-4 Manual Users Manual
logo-adobe-pdf-2.jpgMorningstar SunGuard SG-4 Electrical Diagram
Electrical Diagram
logo-adobe-pdf-2.jpgMorningstar SunGuard Testing Instructions Testing Instructions
Warranty 5 Year Material & Workmanship Warranty
logo-adobe-pdf-2.jpgMorningstar SunGuard SG-4 Warranty Warranty


Terms & Conditions
Shipping: Shipping Policy
Returns: Returns Policy
Payments: We accept: Visa, MasterCard, Discover, and American Express. We also accept checks, direct deposit and wire transfers for large orders.


Morningstar Corporation - Morningstar SunGuard SG-4 PWM Charge Controller
Price: 34
Condition: new
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 Warranty Information

Warranty: 5 Year Material & Workmanship Warranty

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