Mastervolt SCM20 PWM Solar Charge Regulator

Safe, user-friendly, and versatile

Based on PWM technology, the Mastervolt SCM20 PWM Solar Charge Regulator is suitable for all types of lead-acid batteries in both 12 V and 24 V. The device features a large display and switchable output with evening/night lighting function. It provides protection against water spray and high ambient temperatures. And what’s more, it’s compatible with negative grounding, making it the perfect solar regulator for marine and mobile environments. Optionally, a temperature sensor is available.

Mastervolt SCM20 PWM Solar Charge Regulator Features:

• PWM technology
• Suitable for both 36 cells panels (in 12 V systems) and 72 cells panels (in 24 V systems)
• Large display
• Switchable output with evening/night lighting function

Mastervolt SCM20 PWM Solar Charge Regulator Specifications:
Battery Charger

• System voltage (battery): 12/24 V auto select
• Nominal charge current: 20 A
• Battery types: AGM, Gel, flooded
• Battery temperature sensor: optional, product code 41500500
• Switchable output (max. current): 20 A
• Energy consumption (night):

Solar input (DC)

• Panel type (12 V system): 36 cells
• Panel type (24 V system): 72 cells
• Max. PV current (Impp): 20 A
• Recommended PV power (12 V system): 360 Wp
• Recommended PV power (24 V system): 720 Wp

General Specifications

• Cooling: passive
• Display/read-out: backlit LCD with PV power, load power, battery voltage, charge current, warnings, battery state of charge, battery setting
• Grounding: common negative grounding
• Protection degree: IP23
• Dimensions, hxwxd: 98 x 189 x 53 mm (3.9 x 7.4 x 2.1 inch)
• Weight: 0.5 kg (1.1 lb)

Technical Specifications

• Technology: PWM (Pulse Width Modulation)
• Temperature range (ambient temp.): -20 °C to 50 °C, derating power > 40 °C (-4 °F to 122 °F)
• Cable size: max. 16 mm²
• Protections: over temperature, over load, high/low battery voltage, high/low PV voltage, short circuit, reverse polarity & HV transients
• Relative humidity: 95 % non-condensing