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| Model | SS-20L-12V |
| Charge Rating | 20 amps |
| Max PV Open Circuit Voltage | 30 volts |
| System Voltage | 12V |
| Min Battery Voltage | 6V |
| Load Control | Yes (LVD) |
| Load In-Rush Capability | 140 amps |
| Self-Consumption | < 8 mA |
| Voltage Accuracy | +/- 25mV |
| Operating Temperature | -40°C to +60°C |
| Storage Temperature | -55°C to +80°C |
| Transient Surge Protection | 1500W per connection |
| Certifications | UL1741, CSA, CE, RoHS, FCC Class B, Hazardous Locations |
| Warranty Period | 5 Years |
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Morningstar Sunsaver SS-20L-12V Charge Controller w/ Load Control
SKU SS-20L-12VMorningStar SunSaver SS-20L-12V Gen 3
The SunSaver SS-20L-12V delivers maximum power capacity in the 12V SunSaver platform with integrated load control, where the "L" designation indicates Low Voltage Disconnect capability. It's engineered for solar applications requiring both robust 20-amp charging performance and comprehensive load protection.
- Maximum 12V Power: Delivers 20 amps of constant voltage PWM charging to 12V battery systems from up to a 30V solar input with exceptional 140-amp surge capability.
- Integrated Load Protection: Automatically disconnects loads at 11.5V and reconnects at 12.6V to prevent battery damage from deep discharge cycles.
- High-Capacity Systems: Designed for large 12V solar installations, commercial applications, and high-demand off-grid systems.
- 4-Stage Charging: Ensures battery health and longevity with a sophisticated charging algorithm including bulk, absorption, float, and equalize stages.
- Built to Last: Features a solid-state MOSFET design, anodized aluminum case, and epoxy encapsulation for maximum durability.
- Complete Protection: Electronic safeguards against overload, short-circuit, reverse polarity, high temperature, and lightning on all connections prevent damage.
- Certified for Hazardous Locations: UL/CSA Class 1, Division 2, and ATEX/IECEx Zone 2 certified for safe operation in oil, gas, and mining environments.
SunSaver system wiring for a SES Class 1 Division 2 Solar System.
SunSaver SS-20L-12V Certifications
The SunSaver SS-20L-12V meets stringent international safety and performance standards for deployment in residential, commercial, and industrial applications with load control requirements.
- UL 1741 - Listed for electrical safety and grid-tie compatibility
- CSA C22.2 No.213 - Canadian electrical safety standards
- CE Marking - European Conformity for EU market access
- RoHS Compliant - Restriction of hazardous substances
- FCC Part 15 Class B - Electromagnetic interference compliance
- Hazardous Locations - UL/CSA Class 1, Division 2, Groups A-D
- ATEX/IECEx - Zone 2, Gas Group IIC for explosive atmospheres
- ISO 9001 - Manufactured in certified quality facility
Contact Us toll-free: (877) 297-0014
Read more about Morningstar SunSaver charge controllers.
Morningstar SunSaver SS-20L-12V Charge Controller Review
Engineered for professional reliability in high-demand applications, the SS-20L-12V features comprehensive electronic protections and solid-state MOSFET design that eliminates mechanical relay failures while delivering industry-leading surge handling capacity. The tropicalized construction with anodized aluminum enclosure, epoxy encapsulation, and marine-rated terminals ensures dependable operation from -40°C to +60°C in demanding field conditions. Manufactured in an ISO 9001 certified facility with automated precision assembly and 100% pre-shipment testing, each controller comes factory pre-configured for immediate installation. With hazardous location certifications (UL/CSA Class 1 Division 2, ATEX Zone 2) and comprehensive safety approvals, the SS-20L-12V provides professional-grade solar charging with integrated load management for applications where maximum 12V power capacity, load protection, and mission-critical reliability are paramount.
Morningstar SunSaver Charge Controller Applications
Agricultural
Automation
Environmental
Lighting
Mining
Oil and Gas
Railroad
Residential
Rural Power
RV & Marine
Security
Telecom
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