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Morningstar SG-4 Sunguard 4.5 Amp 12 Volt Solar Charge Controller

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Item code	Brand name	Model number	Volts	Amps
MORSG-4	Morningstar Corp	SG-4	12V	4.5A

Morningstar Corporation
Sunguard
Charge Controller

(Para información en español, haga un clic aquí)

Standard Controller Features:

Temperature compensation
High level of lightning protection
Computerized production testing
Ambient temperatures of 40C to +60C
Expected 15 year life
Parallel capability for higher current ratings
Easy to use

Constant voltage, PWM series charging
Reverse current protection (at night)
ISO 9002 manufacturing
High efficiency, low self-consumption
TropicalizationEpoxy or conformal coating
Five year warranty

No need to derate- 25% design margin

Model #	Solar	Load	Voltage	LVD	Wire Size AWG/mm2	Weight oz/kg
SunGuard	4.5A		12V	no	#16 / 2	3 / 0.09

INSTALLATION

SunGuard can be mounted in any position. It is best to mount to a vertical surface and allow space for air flow through the controller.
First connect the Battery BLACK wire (negative) to the battery. Use either black wire since they are connected together inside the controller.
Connect the RED Battery positive wire to the battery.
Connect the Solar array using the other BLACK wire and the YELLOW Solar positive wire. Be very careful not to short circuit the solar array, or the controller will be damaged.
SunGuard prevents reverse current leakage at night, so a blocking diode is not required in the system.
A negative earth ground at the battery is recommended for most effective lightning protection.
SunGuard can be mounted outdoors. Do not expose to ambient temperatures above 60°C. Make sure that water will drain from inside the case.

Downloadable Documentation:

Data Sheet
Operator's Manual
SunGuard Bench Testing
SunGuard Field Testing

SunGuard Mechanical Diagram
SunGuard Electrical Diagram
CE Certification

Información en español

SunGuard Brochure en español
SunGuard Manual en español

Morningstar Corporation

Listen to what Morningstar Corp has to say about their own product!

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Compact & Tough

Greg Bodin

Seems to work good so far. I have only had good luck with all of the Morningstar products that I have bought so far. This little unit is compact and tough. Works good on my solar powered fishing boat. Supposed to be resistant to moisture and I have not had a problem yet.
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Very Robust for Small to Medium Systems

Duane Becker

I'm using this controller to charge and maintain a sealed lead-acid 18 ampere-hour battery at Little Fenway in Jerico, VT (http://www.littlefenway.com/ ). I was challenged to make the scoreboard lights (green and red balls, strikes, outs, hit, and error)come alive with no on-site power, and n...
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