Morningstar Sunsaver SS-20L-12V

Morningstar SunSafer SS-20L-12V is a rugged PWM charge controller designed for industrial applications. Morningstar now offers the third generation of its advanced SunSaver products. Since its launch in 1996, over 1 million SunSaver controllers have been sold in 73 countries. These controllers are used in photovoltaic systems for applications such as oil and gas production facilities, telecommunications and metering systems, marine equipment, and remote residential homes. Many of the performance features of the proven old models, such as ratings, dimensions, and the practical user interface, have been retained, but the following advanced features have also been added:

• Full electrical protection
• 4-stage battery charging
• Self-diagnostics to detect critical faults
• Multi-colour status LED
• 3 LEDs to indicate battery charge level
• Recovery function for exhausted battery
• Telecom mode for sensitive loads
• Limitation of maximum charge for sensitive loads
• Protective cover for terminals
• Other certifications

Technical data:

• Controller type: SS-20L-12V
• Nominal battery voltage: 12V
• Charge/discharge current: 20A
• Final charge voltage Gel/AGM: 14.1V
• Final charge voltage open acid: 14.4V
• Undervoltage cut-off: Yes
• Load disconnection: 11.5V
• Reconnection: 12.6V
• Max. solar voltage: 30V
• Permissible load inrush currents: 140A
• Self-consumption: < 8 mA
• Voltage accuracy: +/- 25 mV
• Connection: Terminal up to 5 mm² / 10 AWG
• Weight: 0.23 kg
• Dimensions: 15.2 x 5.5 x 3.4 cm
• Ambient temperature: -40 °C to +60 °C
• Storage temperature: -55 °C to +80 °C
• Humidity: 100%, non-condensing
• Tropicalised epoxy resin encapsulation, marine grade terminals, anodised aluminium case.