Morningstar SunGuard 4.5A PWM Solar Charge Controller
The Morningstar SG-4 SunGuard is a 100% solid-state PWM solar charge controller rated at 45 A on a 12 V battery system, with a 30 VDC maximum PV input. Its epoxy-encapsulated ABS enclosure, 1500 W lightning surge protection and -40°F to 140°F operating range deliver reliable outdoor charging backed by a 5-year warranty.
$68.00
Available to ship 5 ready to ship
Ships in 1–3 business days.
Delivers in 2–5 business days
Available for pickup
Brought in to Red Deer, AB when you order.
Pickup as early as Mon, Oct 19
— we’ll tell you about drops and promotions.
The Morningstar SG-4 SunGuard is a compact PWM solar charge controller built for small 12 V battery systems. Featuring a fully solid-state design with no relays, it delivers a 45 A rating and accepts up to 30 VDC PV input with a 14.1 V regulation setpoint. Epoxy encapsulation and an ABS plastic case protect it in outdoor conditions from -40°F to 140°F, making it a dependable choice for remote and off-grid installations.
Key Features:
- PWM charge control, 100% solid state, no relays
- Rated at 45 A on 12 V battery systems
- Max PV input voltage 30 VDC
- Regulation voltage 14.1 V, accuracy 60 mV
- Temperature compensation -28 mV/°C
- 1500 W lightning surge protection
- Self-consumption 6 mA, 100% continuous duty
- Operating range -40°F to 140°F
- ABS plastic case, epoxy encapsulated
- ISO 9002 certified, 5-year warranty
Ideal for small 12 V off-grid and remote power setups such as cabins, gates, RVs and telemetry, the SunGuard suits installers needing a rugged, maintenance-free controller. Its outdoor-rated Hypalon wiring and sealed enclosure integrate easily with compact solar and battery systems. Order the SG-4 (also listed as SG4) from Circuit Solar, in stock in Canada and shipped from Red Deer, AB.
SG-4 · 1 file.
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