WZRELB 40A MPPT 12V/24V/48 Auto, 18V/36V Manual,LCD Full Touch Screen Design Solar Charge Controller

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Sale price$239.00 Regular price$279.00
  • WZRELB MPPT solar charge controller: 60Amp, 12V / 24V / 48 Auto, 18V / 36V Mn, common negative ground. Input solar energy: 720W (12V); 1080W (18V); 1440W (24v); 2160W (36V); 2880W (48V), Max PV 170V.
  • Maximum power point tracking technology: working with this technology, WZRELB solar MPPT significantly improves energy utilization of solar systems by lifting the solar tracking efficiency to 97%.
  • Various automatic protection functions: Protection against overcharge, over discharge, over load, short circuit, reverse polarity, over heat and battery under voltage. Low-voltage disconnection (LVD) functioning to prevent damage of batteries due to over-discharge.
  • Intelligent Touch Screen LCD display: Easily access to running parameters and status of the controller. Low-voltage disconnection (LVD) function and overall self-test and electronic protection functions to maximize battery life and improve system performance effectively.
  • RS 485 Communication Interface: Communicateamong multiple computers within up to 1km. Real-time Monitor and set the parameters via mobile phone APP or PC software, keep your system running at full potential without any drop.

About WZRELB: Professional manufacturer for pure sine wave power inverter for 10 years, provide prompt reply, friendly customer service and 16-month warranty.

  • Rated voltage:12/24/48VDC or Auto
  • Rated charge current:40A
  • Maximum protection current :43A
  • Battery voltage identification range :12V(DC9-DC15V)£»24V(DC18-DC30V):48V(DC36-DC60V
  • MPPT Operating voltage range:12V (DC18V~DC150V)»24V(DC34V~DC150V); 48V(DC65V-150V) Maximum PV input power: 12V(900W), 24V(1800W), 48V(3400W)
  • Float voltage (can be customized) :12V-13.75V»24V-27.5V»48V-55V
  • Machine efficiency :96.5%~99%
  • Weight:5.41LB
  • Dimension :7.8*6.4*3IN

1. Can I add a fuse or circuit breaker between the input terminal of the inverter and the battery? If so, what specifications are recommended?

Yes,the following is the calculation method of fuse ampere.  

Continuous power of the inverter ÷ Lowest input voltage =Fuse ampere ,e.g.

3000W 12VDC version: recommed a 300Amp fuse (3000W÷10VDC=300Amp)

3000W 24VDC version: recommed a 150Amp fuse (3000W÷20VDC=150Amp)

3000W 36VDC version: recommed a 100Amp fuse (3000W÷30VDC=100Amp)

3000W 48VDC version: recommed  a 75Amp fuse (3000W÷40VDC=75Amp)

2Why did sparks appear on the cable and the inverter terminal when connecting the battery to the inverter?

This is normal, and it is not that the inverter is malfunctioning. The inverter has built-in large capacitors, a very small amount of power is still stored inside. When the battery cable is connected to the input of the inverter, sparks may appear, which is a discharge process.Please feel free to use it

3. Why the inverter's output voltage keeps dropping or even shuts down automatically when running loads ?

e.g 3000W 12VDC version

1). Pls check If there is a fuse or breaker installed in your systemGenerally,we recommend that a 300Amp fuse be installed between the inverter and the battery.

2). Pls check if use standard cables all . If 4 cables, please use them all, or the output will only be about a half. If you use your own cable, please make sure that the cable specification is larger than AWG 4, and if the length exceeds 24 inch, please thicken the cable .

Note that there is a voltage drop between the battery and the inverter. The thinner and longer the cable, the greater the voltage drop

  • Pls check if the battery capacity is too small .We recommend connecting to a battery system ≥ 300AH for a 3000-watt 12vDC inverter. When the DC LED reading drops while the load is running, it is likely that your battery capacity is too small to supply power to the load. Please try to add other batteries to your previous battery system.

4. Why the inverter can't be turned on?

Pls fully charge the battery before installing the inverter . There are some large capacitors built into the inverter, so it may be in the low-voltage protection or even unable to turn on when the battery power is low

5. Why can't my inverter run the refrigerator? Compressor are inductive in nature and would be a hard load on the inverter.

The vast majority of the refrigerator's power consumption takes place in the compressor, which kicks the instantaneous power in startup phase to 6-7 times ,or even 10 times bigger as its working power. .If you want to power up a refrigerator, we suggest you use 10 times higher power inverter. Please check that the load within the allowable range

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