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MS is a series of controllers with the most advanced MPPT technology, mainly used in medium size solar stand alone power system. MS supports solar charge only, for battery system 12/24/36/48V. It is negative grounded design, and with Bluetooth module built inside for APP monitoring and operation in mobile phone.
12/24/36/48V Auto - Negative Grounded Model
Model No.: VENUS-MS4840N

Advanced Maximum Power Point Tracking (MPPT) Technology
High Quality & Functions
Reliable Electronic Protections
Extensive Device Functions




| Solar Controller Parameter | Value | ||||||||||
| Model No. | MS4840N | ||||||||||
| System Wiring Grounded | Negative Grounded | ||||||||||
| Battery System Voltage | 12/24/36/48V Auto (FLD/GEL/SLD) Manual (Li/User) |
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| No-load Loss | 12mA/12V ; 10mA/24V ; 8mA/36V ; 6mA/48V | ||||||||||
| Max Solar Input Voltage | <150Voc | ||||||||||
| Rated Solar Charge Current | 40A | ||||||||||
| Max Solar Input Power | 600W/12V ; 1200W/24V 1800W/36V ; 2400W/48V |
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| Operating Temperature | -35ºC ~ +45ºC | ||||||||||
| IP Protection | IP34 | ||||||||||
| Net Weight | 2.1 KG | ||||||||||
| Communication Port | RS485+Bluetooth(APP) | ||||||||||
| Operating Altitude | ≤ 3000 meters | ||||||||||
| Controller Dimension | 218*150*65mm | ||||||||||
| Battery Voltages | Battery Parameters | ||||||||||
| Battery Types | FLD | SEL | GEL (default) |
USER (adjustable) |
LI (adjustable) |
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| Equalize Charge Voltage | 14.8V*n | 14.6V*n | — | Default | — | ||||||
| Boost Charge Voltage | 14.6V*n | 14.4V*n | 14.2V*n | Default: GEL | Default: 14.2V*n | ||||||
| Float Charge Voltage | 13.8V*n | Default: GEL | — | ||||||||
| Boost Charge Recovery Voltage | 13.2V*n | Default: GEL | — | ||||||||
| Over-discharge Recovery Voltage | — | — | — | ||||||||
| Over-discharge Voltage | — | — | — | ||||||||
| Auto Temperature Compensation | -3mV/2V/ºC | Default: GEL | — | ||||||||
| Accessory List | Package Status | ||||||||||
| External Temperature Sensor | Yes | ||||||||||
| Remote LCD Meter | Optional | ||||||||||
| Bluetooth Module | Yes/Inbuilt | ||||||||||
| Parallel Charge Use Cable | Optional | ||||||||||
| Installation Guidance Paper | Yes | ||||||||||
| User Manual | Yes | ||||||||||