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Suntronic 4000 On-Grid Inverter

Quick Overview


Brand Max Power
Product Code ST-4000
Warranty 18 Months
User Guide Download PDF


SKU: ST-4K Category:

Suntronic 4000 On-Grid Inverter 

A Suntronic 4000 is an on-grid type inverter that comes with a pure sine wave output system. It gives 3000KW current voltage. This inverter provides a user-adjustable charging current /voltage plus works on a battery independent system.

Some of the power ranges of this inverter are;

  • The maximum PV array power range is 4000 watts.
  • Its rated output power is 3000 watts.
  • The maximum PV array open circuit voltage is about 450 VDC.
  • This inverter provides a maximum input solar current of 18 amperes.
  • MPP tracker number is 1 of this model.

Working Stats

The working stats of this PV inverter in grid output (AC) are;

  • It gives the nominal output voltage of 220/230/240 VAC.
  • The output voltage range of this inverter is about 184 to 264.5 VAC or 195.5 to 253 VAC (it’s selectable).
  • The nominal output current is 13 Ampere.
  • Power factor range of this model is less than 0.99.
  • It comes with a maximum conversion efficiency of 95% (DC/AC)

The grid input (AC) working stats are;

  • The acceptable input voltage ranges this inverter offers is about 90 to 280 VAC or 170 to 280 VAC (it is selectable).
  • Frequency range of this model is 50 or 60 Hz (its auto sensing).
  • The maximum AC input current is 40 amperes.
  • 30 amperes are the maximum short circuit current.
  • The PV technology integrated in this inverter has efficiency of about 93%.

Coming up to the battery range;

  • It comes with nominal DC voltage of 48 VDC.
  • The maximum solar charge current, ac charge current, and plain charge current is 60 amperes, respectively.

Related: Suntronic Plus 15,000 On-Grid Inverter


This model has a dimension of 120 x 295 x 468 mm with a net weight of 11 kg. It comes with 9 units of parallel functions. This solar inverter for solar panel provides a USB section as a communication port to connect anything with it. The Suntronic 4000 on-grid inverter can work in -10 to 50 degrees Celsius operating temperature range. It can operate in a humidity range of 0 to 90% RH (non-condensing). It is known as the best solar inverter in Pakistan because of these features.

Related: Suntronic 10K on-grid inverter with energy storage.

Frequently Asked Questions

Do solar inverters go offline at night?

Yes, solar inverters don’t really work at night because they need sunlight to sustain the operation. So, the solar inverters go offline at night and start working from the other morning.

Should you unplug solar panels at night?

It is safe to unplug the solar panels at night. The solar panels take the power from the sun so at night it is better to disconnect the solar panels. Because much care is needed when you are doing anything with electrical equipment at its high voltage level.

Do solar panels work with Moonlight?

No, solar panels cannot work with moonlight because the moon cannot produce any photons or any of its own light so a solar panel cannot get charged through moonlight.

Technical Specification

MODEL Suntronic 4000
Rated Power 3000W
Max. PV Array Power 4000W
Rated Output Power 3000W
Maximum PV Array Open Circuit Voltage 450 VDC
MPPT Range @ Operating Voltage 120 VDC ~ 430 VDC
MPP Tracker Number 1
Maximum Input Solar Current (Imax) 18 A
Nominal Output Voltage 220/230/240 VAC
Output Voltage Range 184 – 264.5 VAC or 195.5 – 253 VAC (Selectable)
Nominal Output Current 13A
Power Factor range > 0.99
Maximum Conversion Efficiency (DC/AC) 95%
Acceptable Input Voltage Range 90 – 280 VAC or 170 – 280 VAC
Frequency Range 50 Hz/60 Hz (Auto sensing)
Maximum AC Input Current 40 A
Nominal Output Voltage 220/230/240 VAC
Output Waveform Pure Sinewave
Efficiency (DC to AC) 93%
Nominal DC Voltage 48 VDC
Maximum Solar Charge Current 60 A
Maximum AC Charge Current 60 A
Maximum Charge Current 60 A
Dimension, D X W X H (mm) 120 x 295 x 468
Net Weight (kgs) 11
Parallel Function Yes, 9 units
Communication Port USB / RS-232 / Dry-Contact
Humidity 0 ~ 90% RH (Non-condensing)
Operating Temperature -10°C to 50°C


  • Pure sine wave output
  • Self-consumption and Feed-in to the grid
  • Programmable supply priority for PV, Battery or Grid
  • User-adjustable charging current and voltage
  • Programmable multiple operation modes: Grid-tie,
    off-grid and grid-tie with backup
  • Monitoring software for real-time status display and control
  • Parallel operation up to 9 units
  • Battery Independent system