Morningstar SunGuard SG-4 PWM 12v 4.5a Solar Controller
Features
SUNGUARD™ SOLAR CONTROLLER
- 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
The Most Compact, Advanced, Economical Solar Charge Controller on the Market
SunGuard is a single module, compact solar charge controller for small systems, ideal for both professional and consumer use. Featuring the same components, charging circuit, and build quality of Morningstar's industry-leading SunSaver controllers, SunGuard is easily the most compact, advanced and economical solar charge controller on the market today. With SunGuard, there's no reason not to insist on Morningstar quality with any system design-no matter how small.
- ISO 9002 quality programs
- Series design (not shunt)
- 100% solid state (no relays)
- True 0 to 100% PWM duty cycle
- Setpoint accuracy to 60 mV
- Temperature compensation
- Rated for 25% overcurrents
- Rated for 100% continuous duty
- Includes 1500W of lightning surge protection
- Self-consumption is 6 mA
- Fully encapsulated in epoxy potting
- ABS plastic, impact-resistant case
- Outdoor rated, Hypalon connecting wires
Advantages
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
Advanced PWM Battery Charging
Applications
Security and surveillance
Specifications
Technical Specifications
| Product Type | Solar Charge Controller |
|---|---|
| Manufacturer | Morningstar |
| Model | SG-4 |
| 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 +60°C |
| CE and RoHS compliant | Yes |
| TAA compliant | Yes |
| Manufactured in a Certified ISO 9001 Facility | Yes |
| Brand | Morningstar |
|---|---|
| Product Type | Power & Lighting |
Shipping Information
- Free NZ-wide shipping on orders over $299
- Standard delivery 2–5 business days
- Rural delivery may take an additional 1–2 days
- Same-day dispatch for orders placed before 2pm (weekdays)
Returns Policy
- 7-day returns on unused items in original packaging
- Faulty or damaged products covered under warranty
- Contact our support team to initiate a return






