
Voltronic Axpert King 3K Off-Grid Solar Inverter
- Parallel Capability:Up to 9 units
- Voltage Range:110-280 VAC

The Axpert King 5K is an off-grid solar inverter rated Axpert King 5K.
In stock
The Axpert King 5K is an off-grid solar inverter rated Axpert King 5K. Every figure on this page is read from the manufacturer's manual for the Axpert King series.
Specifications last updated 18 August 2026
| Parallel Capability | Up to 9 units |
|---|---|
| Voltage Range | 110-280 VAC |
| Output THDV | ≤ 3% for linear load, 8% for non-linear load |
| Efficiency (Peak) | 93% at |
| MPP Range @ Operating Voltage | 60~115VDC |
| Communication Interface | USB/RS232/RS485/Bluetooth/Dry-contact |
| Rated Power | 5000VA/5000W |
| Surge Power | 10000VA for 5 sec |
| Floating Charge Voltage | 27 VDC |
| Solar Charger Type | MPPT |
| Maximum Charge Current | 120 A |
| Waveform | Pure sine wave |
| Maximum PV Array Open Circuit Voltage | 145 VDC |
| Maximum PV Array Power | 4000 W |
| Net Weight (kgs) | 13.5 |
|---|
| Humidity | 5% to 95% |
|---|---|
| Operating Temperature | 0°C to 55°C |
| Storage Temperature Range | -15°C to 60°C |








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Read: How to Monitor Voltronic Inverters and UPS via WiFi →The Axpert King 5K is rated 5000VA/5000W. 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 5K takes up to 4000 W of PV array. The string has to stay below 145 VDC open-circuit — that ceiling is reached on a cold bright morning, not at noon. The tracker works over 110-280 VAC, so wire the modules to land inside that window.
Over USB/RS232/RS485/Bluetooth/Dry-contact. Those are the ports this unit publishes, and any monitoring or logging you plan has to go through one of them.