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MB Series MPPT Solar Charge Controller 20/30 A

The MB Series is a compact external MPPT charge controller for small solar systems, rated 20 or 30 A at 12-48 V.

It supports sealed, gel, flooded and lithium batteries, tracks at 99.5% efficiency and converts at 97.5%, with RS485 communication, DC load control and full reverse-polarity protection in a small fan-cooled casing.

Model:
MB Series

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Data Sheet

Data Sheet

Parameter	MB20415F	MB30415F
General
Rated system voltage	12/24/36/48 VDC or auto-sensing
Controller operating voltage range	11-64 V
Lead-acid battery types	Maintenance-free (default) / gel / flooded / custom
Lithium battery types	LiFePO4 / NMC / custom
Rated charging current	20A	30A
Rated charging power	260 W @12 V	390 W @12 V
Rated charging power	520 W @24 V	780 W @24 V
Rated charging power	780 W @36 V	1170 W @36 V
Rated charging power	1040 W @48 V	1560 W @48 V
Max. PV module open-circuit voltage	150Vdc
PV input operating voltage range	18-150 VDC @12 V system
PV input operating voltage range	36-150 VDC @24 V system
PV input operating voltage range	48-150 VDC @36 V system
PV input operating voltage range	64-150 VDC @48 V system
MPPT operating voltage range	18-110 VDC @12 V system
MPPT operating voltage range	36-110 VDC @24 V system
MPPT operating voltage range	48-110 VDC @36 V system
MPPT operating voltage range	64-110 VDC @48 V system
Tracking efficiency	≥99.5%
Max. conversion efficiency	0.975
Temperature compensation coefficient	-3 mV/°C/2 V
Static loss	200 mA @12 V; 100 mA @24 V; 50 mA @48 V
DC load output voltage	Same as battery voltage
DC load rated output current	20A
DC load output control mode	Always-on / always-off mode
Protection functions	PV reverse-polarity, battery reverse-polarity, over-charge/under-charge and over-temperature protection
Cooling method	Fan cooling
Communication	RS485
LCD backlight time	Default 60 s, backlight mode configurable
Environment
Operating temperature range	-20 to +50 °C
Storage temperature range	-40 to +70 °C
Relative humidity range	0-90% RH
Mechanical
Dimensions	210×150×80mm
Recommended wiring	11AWG/4mm²	9AWG/6mm²
Net weight (ref.)	1.4	1.45