Multifunction inverter AX-K1

The devices in the AX K1 series with integrated MPPT solar charge controller are multi-function inverters / PV chargers with the combined functions of an inverter as well as a solar and battery charging device. These inverters are suitable for standalone operation independent of mains supply via PV modules but can also be operated with electrical power from accumulators, generators or the public power supply grid.
If insufficient power is being supplied from the PV
modules, the device automatically tops up the power level with battery current or, if the batteries are discharged completely, it switches over to the mains power grid. A network of three AX units can be configured for 3-phase operation.

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  • PV inverter without mains power supply
  • Island operation possible
  • Installed PWM solar charge controller
  • 1000, 3000, 5000 W nominal load
  • 12, 24, 48 VDC Battery voltage
  • PV- / Battery chargert with 3-stage charge
  • Battery voltage thresholds can be adjusted individually
  • No more external neutral-point emulation is required
  • Parallel operation by up to 9 inverters
  • Several power sources
  • 3-phase operation is possible
  • Sine-wave output
  • Can be configured via LCD display or PC software
  • Automatic reboot when mains power is restored
  • Protection against excessive loads and temperatures as well as short circuits
  • 24 months‘ warranty

Special feature

  • Power factor 1
  • Larger LC display
  • Equalizing (battery)
  • Integrated neutral-point emulation (VDE AR-E 2510-2)


PowerPower in VA10002000300040005000
Power in W10002000300040005000
AC inputAC input voltage230 VAC
AC input voltage range100 – 270 VAC
AC input frequency50 Hz / 60 Hz
OutputOutput voltage230 VAC ± 5 %
Peak performance (5 seconds)2000 VA4000 VA6000 VA8000 VA10000 VA
Max. efficiency95 %
Output frequency50 Hz or 60 Hz, adjustable
Transfer time20 ms configuration Domestic appliances /
10 ms bei Computer applications (UPS)
Wave formSine wave
BatteryBattery voltage12 VDC24 VDC48 VDC
Charging voltage (VDC)12.0 – 14.624.0 – 29.248.0 – 58.4
Overload protection (VDC)15.531.060.0
Solar charger /
AC charger
Max. PV power600 W1200 W2400 W
PV charging current50 A
Max. AC charging current (adjustable)20 A30 A60 A
Max. charging current (adjustable)50 A110 A
Effective operating range UOP15-18 VDC30-32 VDC60-72 VDC
Max. input voltage UOCV50 VDC60 VDC105 VDC
Standby power consumption1 W2 W
General dataSize (HxWxD) [mm]316 x 240
x 95
355 x 272 x 100468 x 297 x 125
Weight (in kg)
Humidity5%-95% (non-condensing)
Operating temperature0°C – 50°C
Storage temperature-15°C – 60°C
Regulations /
SafetyEN 62109-1: 2010, EN 62109-2: 2011
EMCEN 61000-6-4: 2007+A1: 2011; EN 61000-6-2: 2005+AC: 2005

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