
Voltronic Axpert King II TWIN 6K Off-Grid Solar Inverter
- Parallel Capability:Up to 9 units
- Voltage Range:110-280 VAC

The Axpert King II TWIN 6.2K is an off-grid solar inverter rated Axpert King II TWIN 6.2K.
In stock
The Axpert King II TWIN 6.2K is an off-grid solar inverter rated Axpert King II TWIN 6.2K. Every figure on this page is read from the manufacturer's manual for the Axpert King II TWIN series.
Specifications last updated 18 August 2026
| Parallel Capability | Up to 9 units |
|---|---|
| Voltage Range | 110-280 VAC |
| THDi | ≤ 10% |
| AC Voltage Regulation (Line&Batt. Mode) | 230VAC ±5% |
| Frequency Range (Synchronized Range) | 46-54 Hz or 56-64 Hz |
| Harmonic Distortion | ≤3% THD (Linear Load); ≤ 5% THD (Non-linear Load) |
| Line Mode | 94% |
| ECO Mode | 98% |
| Maximum AC Charge Current | 120A |
| Communication Interface | RS232, USB |
| Rated Power | 6200VA/6200W |
| Maxmum Solar Charge Current | 120A |
| Input Voltage Waveform | Sinusoidal |
| Low Loss Voltage | 176Vac±7V |
| Low Loss Return Voltage | 186Vac+7V |
| High Loss Voltage | 280Vac±7V |
| High Loss Return Voltage | 270Vac±7V |
| Max AC Input Voltage | 300Vac |
| Nominal Input Frequency | 50Hz/60Hz (Auto detection) |
| Low Loss Frequency | 46(56)±1Hz |
| Low Loss Return Frequency | 46.5(57)±1Hz |
| High Loss Frequency | 54(64)±1Hz |
| Power Factor | >0.98 |
| Efficiency (Line Mode) | 93% ( |
| Transfer Time | InverterBypass 4ms |
| Overcharge Protection | 66Vdc |
| Output Short Circuit Protection | Line mode: Circuit Breaker Battery mode: Electronic Circuits |
| Battery Mode | 92% |
| Surge Capacity | 2* rated power for 5 seconds |
| Nominal DC Input Voltage | 48Vdc |
| No Load Power Consumption | <75W |
| Max. PV Array Open Circuit Voltage | 500Vdc |
| Safety Certification | CE |
| Waveform | Pure sine wave |
| Solar Charger type | MPPT |
| Maximum PV Array Power | 6000 W |
| Humidity | 5% to 95% |
|---|---|
| Operating Temperature | -10°C to 50°C |








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Read: How to Monitor Voltronic Inverters and UPS via WiFi →The Axpert King II TWIN 6.2K is rated 6200VA/6200W. That is the continuous figure and it is the one to size your load against; no separate surge rating is published for this unit.
The Axpert King II TWIN 6.2K takes up to 6000 W of PV array. The string has to stay below 500Vdc open-circuit — that ceiling is reached on a cold bright morning, not at noon.
Peak efficiency is 93% (. Whatever is not converted leaves as heat, so the Axpert King II TWIN 6.2K needs clear air around it and a mounting spot that is not the hottest wall in the building.