Overview Summary
RCT-AXPERT 6K MK4 TWIN - 6kVA / 6kW 48V pure sine inverter with dual AC outputs and MPPT solar charging for flexible load management and reliable backup power.
The Axpert MKS 4 TWIN provides two independently controllable AC outputs to enable smart load scheduling and load shedding by time, cut-off voltage or state-of-charge. It includes a high-performance MPPT solar charge controller with a wide MPPT operating range and high maximum PV input capability, making it suitable for off-grid, hybrid and backup installations.
Designed for installers and system integrators, the inverter supports parallel operation of up to 9 units for increased capacity, multiple communication options (USB / RS232 / RS485 / WiFi / dry-contact) for monitoring and BMS integration, and a large 4.3 inch color LCD with touchable button controls for easy setup and status monitoring.
Performance tier: High-end
Uses: Residential backup, Off-grid systems, Hybrid solar installations, Small commercial sites, Load-managed power supply
Overview
Axpert MKS 4 TWIN 5KVA/6KVA
Dual outputs for smart load management
Axpert MKS 4 TWIN is occupied with two outputs. The second output can be scheduled on/off, setting cut-off voltage or SOC and discharging time via LCD setting. Axpert MKS 4 TWIN is equipped with MPPT solar charge controller to maximize and regulate DC power from the solar array for charging the battery bank.
Description
The RCT Axpert MKS 4 TWIN 6K is built around a 6000VA / 6000W inverter topology delivering pure sine wave output and tight AC voltage regulation (230 VAC +/- 5% in battery mode). The unit integrates an MPPT solar charger designed to extract maximum energy from PV arrays with an MPPT operating window from 120 VDC to 500 VDC and a maximum PV array power rating of 6000 W. With a maximum PV array open circuit voltage of 500 VDC and maximum PV input current of 27A, the charger handles substantial solar input for fast battery recharge and sustainable off-grid operation.
Dual AC outputs enable prioritized and scheduled load distribution; the second output can be configured for on/off schedules, cut-off voltage or SOC and discharging time via the 4.3 inch colored LCD interface. The device supports wide AC input ranges for stable operation with variable grid conditions and provides fast transfer times of 10 ms for PC-grade loads and 20 ms for general home appliances.
Connectivity options include USB, RS232, RS485, WiFi and dry-contact for monitoring, BMS integration and remote control. The inverter is designed for stacked parallel operation - up to 9 units - making it suitable for scalable installations where additional capacity is required without changing individual unit specifications.
Features
- Maximum PV input current 27
- Dual outputs for smart load management
- Customizable status LED ring with RGB lights
- Touchable button with large 4.3 colored LCD
- Wide DC input range
- Built-in WiFi for mobile monitoring (App is available)
- Reserved communication port for BMS
- Battery independent function
- Parallel operation with up to 9 units
FAQ
Q: What battery voltage does the RCT-AXPERT 6K MK4 TWIN require?
A: The inverter is specified for a 48 VDC battery bank. Floating charge voltage is 54 VDC and overcharge protection is set at 66 VDC.
Q: Can multiple units be paralleled for higher output?
A: Yes. The unit supports parallel operation with up to 9 units to scale output for larger installations.
Q: What is the maximum PV array voltage and power supported?
A: Maximum PV array open circuit voltage is 500 VDC and the maximum PV array power is 6000 W. The MPPT operating window is 120 VDC to 500 VDC.
Q: Which communications are available for monitoring and integration?
A: Communication interfaces include USB, RS232, RS485, WiFi and dry-contact for system monitoring and BMS or third-party integration.
Q: What is the expected transfer time for connected loads?
A: Transfer time is 10 ms for personal computer grade loads and 20 ms for general home appliances, ensuring minimal disruption for sensitive equipment.
Specifications
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| Specifications |
| Product Code | RCT-AXPERT 6K MK4 TWIN |
| MODEL | Axpert MKS 4 TWIN 6K |
| Rated Power | 6000VA/6000W |
| Parallel Capability | Yes, up to 9 units |
| INPUT |
| Voltage | 230 VAC |
| Selectable Voltage Range | 170-280 VAC (For Personal Computers); 90-280 VAC (For Home Appliances) |
| Frequency Range | 55/60 Hz (Auto sensing) |
| OUTPUT |
| AC Voltage Regulation (Batt. Mode) | 230 VAC ± 5% |
| Efficiency (Peak) | 93% |
| Transfer Time | 10 ms (For Personal Computers); 20 ms (For Home Appliances) |
| Waveform | Pure Sine Wave |
| Overload capacity | 5s@150% load; 10s@110%~150% load; 100ms@≥200% load |
| BATTERY |
| Battery Voltage | 48 VDC |
| Floating Charge Voltage | 54 VDC |
| Overcharge Protection | 66 VDC |
| SOLAR CHARGER & AC CHARGER |
| Solar Charger Type | MPPT |
| Maximum PV Array Open Circuit Voltage | 500 VDC |
| Maximum PV Array Power | 6000 W |
| MPPT Range @ Operating Voltage | 120 VDC~500 VDC |
| Maximum Solar Charge Current | 120A |
| Maximum AC Charge Current | 120A |
| Maximum PV Input Current | 27A |
| PHYSICAL |
| Dimension, D X W X H (mm) | 140 x 295 x 468 |
| Net Weight (kgs) | 12 |
| Communication | USB/RS232/RS485/WiFi/Dry-contact |
| OPERATING ENVIRONMENT |
| Operating Humidity | 5% to 95% Relative Humidity(Non-condensing) |
| Operating Temperature | -10degreesC to 50degreesC |
| Storage Temperature | -15degreesC to 60degreesC |
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