SS-20L-12V Solar Charge Controller 12V 20A PWM

Description

The Morningstar SunSaver SS-20L-12V Solar Charge Controller is a durable 12 Volt 20 Amp solar controller designed to protect batteries and deliver reliable performance in off-grid and industrial applications. Featuring 4-stage charging, temperature compensation, and low voltage disconnect (LVD), it helps extend battery life while protecting sensitive loads.

Built with a series design for efficient operation, this controller works with both AGM and flooded batteries. Its rugged construction and approval for hazardous locations make it ideal for demanding environments such as oil and gas, telecom, and remote systems.

If you are working with a smaller system, see the 10 Amp solar charge controller.

Key Features

• 20 Amp Solar Charge Controller – Designed for 12 Volt battery systems
• Low Voltage Disconnect (LVD) – Protects batteries from over-discharge
• 4-Stage Charging – Helps extend battery life and improve performance
• Temperature Compensation – Adjusts charging for changing conditions
• Compatible with AGM and Flooded Batteries
• Series Design – Efficient, cool, and reliable operation
• Telecom Mode – Designed for sensitive electronic loads
• LED Status Indicators – Multi-colour LEDs display battery condition and system status
• Electronic Protection – Protects against wiring mistakes and system faults
• Factory Pre-Set – Easy installation with no required setup
• Fully Automatic Operation – Includes fault recovery

Rugged Design

• Wide Temperature Range – Operates reliably from -40°C to +60°C
• Marine Rated Terminals – Built for durability in harsh environments
• Anodized Aluminum Case – Corrosion-resistant housing
• Hazardous Location Approved – Suitable for industrial and oil & gas applications
• High Quality Manufacturing – Produced in an ISO 9000 certified facility

Common Applications

• Off-grid solar systems
• Telecom systems
• Oil and gas installations
• Remote monitoring equipment
• Industrial battery charging systems

Specifications

• Model: SS-20L-12V
• System Voltage: 12 Volt
• Charge Current: 20 Amps
• Battery Compatibility: AGM and Flooded
• Charging Profile: 4-stage charging with temperature compensation
• Low Voltage Disconnect: Yes (LVD)
• Operating Temperature: -40°C to +60°C
• Factory Configuration: Pre-set
• Data Sheet: SunSaver Data Sheet (PDF)

Frequently Asked Questions

What is the SS-20L-12V used for?

This controller is designed for 12 Volt solar systems where reliable battery charging and load protection are required such as industrial and off-grid applications.

What does low voltage disconnect (LVD) do?

LVD protects your battery by disconnecting the load before the battery becomes too deeply discharged which helps extend battery life.

What batteries are compatible with this controller?

The SS-20L-12V works with 12 Volt AGM and flooded lead-acid batteries.

When should I choose a 20 Amp controller?

If you have larger solar panels or systems with higher current requirements, a 20 Amp controller is a good choice. It provides safe and efficient charging for higher capacity systems.

Is this controller suitable for harsh environments?

Yes. It operates from -40°C to +60°C and is approved for use in hazardous locations making it ideal for demanding industrial and outdoor applications.

Is it easy to install?

Yes. The controller is factory pre-set and fully automatic, with built-in protection against wiring mistakes and system faults.