1. Pure sine wave solar inverter
2. Max 120A MPPT solar charger
3. Max 500VDC PV input
4. Two loads of AC output
5. High PV input voltage range(0~450VDC)
6. Output power factor 1.0
7. Real Hybrid Solar inverter for 24V system
8. Wi-Fi module for easy connection(optional)
9. Efficiency work with or without battery
11. Supports 50hz or 60hz (program adjustable)
12. Able to use AC grid or generator power
13. Built-in anti-dusk kit for harsh environment

- Dual Output Capability: The Volker Max Series 4.2kw is a versatile hybrid solar inverter that can operate in both on-grid and off-grid modes, providing flexibility for users who want to switch between different power sources.
- High Power Output: With a rated power of 4200W and a peak power of 6200W, this inverter is suitable for homes with medium to large energy demands, as mentioned by the user looking for a product that can handle their energy needs.
- Pure Sine Wave Output: The inverter produces a pure sine wave output, which is ideal for sensitive electronics and appliances, ensuring a smooth and efficient power supply.
- Durable Design: The inverter has an IP21 rating, and a compact size of 42x35x11cm, making it easy to install and maintain.
- Efficient and Reliable: With an efficiency of 93% and a CE certification, the VOL-MAX-4.2KW is a reliable choice for users who want a high-performance inverter that meets international standards.
Model | VOL- MAX-4.2KW | VOL- MAX-6.2KW |
Phase | 1-Phase | |
Maximum PV Input Power | 6200W | 6500W |
Rated Output Power | 4200W/4200VA | 6200W/6200VA |
Maximum Solar Charging Current | 120A | |
GRID-TIE OPERATION | ||
PV Input(DC) | ||
Nominal DC Voltage/Maximum DC Voltage | 360VDC/500VDC | |
Start-up Voltage/Initial Feeding Voltage | 90VDC/90VDC | |
MPPT Voltage Range | 60VDC~450VDC | |
Number of MPPT/Max Input Current | 1/18A | 1/22A |
GRID OUTPUT(AC) | ||
Nominal Output Voltage | 220/230/240VAC | |
Output Voltage Range | 195~253VAC | |
Nominal Output Current | 18.2A | 27.0A |
Power Factor | >0.99 | |
Feed-in Grid Frequency Range | 49~51±1Hz | |
EFFICIENCY | ||
Max Conversion Efficiency(DC/AC) | 98% | |
TWO-LOAD OUTPUT POWER | ||
Full Load | 4200W | 6200W |
Maximum Main Load | 4200W | 6200W |
Max Second Load(battery mode) | 1400W | 2067W |
Main Load Cut-Off Voltage | 22VDC | 44VDC |
Main Load Return Voltage | 26VDC | 52VDC |
OFF-GRID OPERATION | ||
AC Input | ||
AC Start-up Voltage/Auto Restart Voltage | 120-140VAC/180VAC | |
Acceptable Input Voltage Range | 90-280VAC or 170-280VAC | |
Maximum AC Input Current | 30A | 40A |
Nominal operating frequency | 50/60Hz | |
Surge power | 8400W | 12400W |
PV INPUT(DC) | ||
Maximum DC Voltage | 500VDC | |
MPPT Voltage Range | 60VDC~450VDC | |
Number of MPPT/Max Input Current | 1/30A | |
BATTERY MODE OUTPUT(AC) | ||
Nominal Output Voltage | 220/230/240VAC | |
Output Waveform | Pure sine wave | |
Efficiency(DC to AC) | 94% | |
BATTERY&CHARGER | ||
Nominal DC Voltage | 24VDC | 48VDC |
Maximum Solar Charging Current | 120A | |
Maximum AC Charging Current | 100A | |
PHYSICAL | ||
Dimension,D*W*H(mm) | 420*350*110 | |
Carton Dimension,D*W*H(mm) | 500*410*190 | |
Net Weight(Kg) | 8.5 | 9 |
Gross Weight(Kgs) | 9.5 | 10 |
INTERFACE | ||
Communication Port | RS232/RS485/WiFi/GPRS/LITHIUM BATTERY | |
Operating Temperature | -10~50ºC |







We are based in Wuhan, China, and started in 2012. We sell to America(25.00%), Europe(25.00%), Africa (15.00%), the Middle East(15.00%), Asia(10.00%), and the Domestic Market(10.00%). Our company has about 200 people.
2. How can we guarantee quality?
Always a pre-production sample before mass production;
Always final Inspection before shipment;
3. What can you buy from us?
Pure sine inverter, modified inverter, hybrid inverter, micro-inverter, pure sine wave inverter PCBA, etc.;
4. Why should you buy from us not from other suppliers?
12 years of experience in the power inverter industry
20 Professional engineering teams
Specialization enhances quality
Three-year warranty and lifetime technical service
Products have passed CE, RoHS, and ISO9001:2000 Quality System Certificates.
5. What services can we provide?
Accepted Delivery Terms: FOB, EXW;
Accepted Payment Currency: USD, HKD, CNY;
Accepted Payment Type: T/T, Cash;
Language Spoken: English, Chinese
Tips: Many low-cost solar inverters are assembled in small unlicensed workshops to reduce costs. The use of substandard components for assembly poses a huge security risk! To protect personal and property safety, please do not covet low prices; be sure to choose a reliable inverter!