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Morningstar SunSaver Gen 3 solar controller logo
SunSaver SS-6-12 PWM Solar Charge Controller (Gen 3)
Rated up to 6 Amp PV charging current for 12 volt battery systems
Morningstar Model Number SS-6-12V
Solar Charge Current Rating 6A
Nominal Battery Voltage 12V
Regulated Output Voltage Sealed: 14.1 V
Flooded: 14.4 V
Max. Solar Voltage 30 Volts
Self-Consumption < 8 mA
Load In-rush Capability 45A
Dimensions 6" x 2.2" x 1.3"
Weight 8 oz.

Morningstar Sunsaver SS-6-12V Charge Controller

SKU SS-6-12V

Morningstar SunSaver SS-6-12 Solar Charge Controller (Gen 3)

Sunsaver Gen 3 charge controller

The Morningstar SunSaver SS-6-12 is a very reliable charge controller with the same battery charging algorithm as the ProStar that has been scaled down for smaller PV systems. This device includes a combination of features and capabilities not found in other small PV controllers.

This controller is rated for Hazardous LocationsClass 1, Division 2 (C1 D2 - Class I Div II) Groups A-D, making it the preferred choice for Oil & Gas applications. Class I, Division 2 certification permits use of an electrical device in an environment where explosive gases are periodically present. The Morningstar SunSaver SS-6-12 is C1D2 certified for systems that are properly wired per Division 2 NEC approved wiring methods.

Constant voltage PWM charging is a proven advancement compared to the common on/off PV regulators. SunSavers are field-selectable for sealed or flooded batteries. A rugged anodized aluminum case and epoxy-encapsulated electronics ensure durability and longevity. A temperature compensation sensor in the charge control varies full charge voltage with temperature. All Morningstar SunSaver controllers feature LED charging indicators. 

SunSaver SS-6-12 Benefits

PWM 4-stage charging
The SunSaver 6 features 4-stage PWM battery charging for optimum battery health.
  • • 100% solid state
    • Series design (not shunt)
    • True 0 to 100% PWM duty cycle
    • Setpoint accuracy @ 12V: +/-25mV;
    • Fully encapsulated in epoxy
    • Marine rated terminals
  • • Anodized case
    • Temperature compensation
    • Sealed / Flooded battery select
    • Parallel for 40 amps or more
UL ETL Intertek Recognized Component

SunSaver controllers are manufactured in a world class ISO certified facility. Morningstar uses automated production processes so every unit is exactly the same with parts soldered to .0006 inch accuracy. Anodized case, marine terminals and custom potting material is used for a controller that is built to last through everyday real world PV applications.

SunSaver SS-6-12 Warranty

All of Morningstar’s SunSaver charge controllers are warranted to be free from defects in material and workmanship for a period of FIVE (5) years from the date of shipment to the original end user. Morningstar will, at its option, repair or replace any such defective products.

SunSaver 6 Certifications

ETL Listed to UL 1741 & CSA C22.2 No. 107.1-01
Hazardous Locations:
  Class 1, Division 2, Groups A,B,C,D, CSA C22.2#213
EMC Directives:
  Immunity, emissions, safety
FCC Class B Part 15
ISO 9000



Contact us toll-free: (877) 297-0014

Read more about Morningstar SunSaver charge controllers.

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MorningStar SunSaver SS-6-12 Charge Controller Detailed Review


Max. PV and load ratings: listed above
System voltage: 12 volts nominal
Min. battery voltage: 1 volt
Regulation voltage
  Sealed battery: 14.1 V
  Flooded battery: 14.4 V
Max. solar voltage: 30 volts
Self-consumption: < 8 mA
Voltage accuracy @ 12V: +/– 25 mV (typical)
Transient surge protection: 1500W per connection


Wire size: 5 mm2 / #10 AWG
Weight (unpacked): 0.23kg / 8 oz.
Dimensions: 6.0 x 2.2 x 1.3 inch


Ambient temperature: –40°C to +60°C
Storage temperature: –55°C to +80°C
Humidity: 100% non-condensing
Tropicalization: Epoxy encapsulation, Marine rated terminals, Anodized aluminum case

SunSaver Class 1 Division 2 solar system enclosure photo
SunSaver system wiring photo of Class 1 Division 2 solar system enclosure.

Electronic Protections

Solar: Overload, short-circuit, high voltage
Load: Overload, short-circuit, high voltage
Battery: High voltage
All: Reverse polarity, high temperature, lightning
and transient surges
Reverse current at night

Battery Charging

Charging method: 4 stage series PWM
Charging stages: Bulk, absorption, float, equalize
Temperature compensation:
  Coefficient: –30mV/°C
  Range: –30°C to +60°C
  Set points: Absorption, float, equalize

LED Indications

Status LED (1): Charging or not charging, Solar error conditions
Battery LED’s (3): Battery level, Charging stage


Contact us toll-free: (877) 297-0014

SunSaver Gen 3 charge controllers available with our complete systems.

Contact us toll-free: (877) 297-0014


Contractor Discounts Available


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SunSaver Charge Controllers


Contact us for remote outdoor solar system sales & advice for PV systems using the Morningstar SunSaver SS-6-12V Solar Charge Controller.