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Outback Grid Tie / Off Grid Hybrid Sinewave Inverter/Charger

These Outback inverter models will feed power to the grid or battery backup panel but both remain connected at all times to insure you always have power. The grid tie capability will turn or spin your meter backwards. The Outback inverter can be used as a grid tie inverter, battery backup inverter, off grid inverter, or all three simultaneously if you wish.

Important Product Notes:

  • The FXR inverter is only compatible with the MATE3 System Display and Controller.
  • It is not intended for use with the OutBack MATE or MATE2 products.
  • FXR-class inverters cannot be stacked with FX-class inverters. If stacking multiple FXR inverters you must use the HUB 10.3. The HUB4 can be used with a one inverter system.

The latest, most advanced features on the industry’s most trusted and proven platform—that’s the essence of OutBack’s new FXR Series of Grid/Hybrid inverter/chargers. Capable of off-grid or grid-connected operation in a single model, the FXR Grid/Hybrid inverter/chargers provide system designers with unprecedented flexibility and compatibility for nearly
any power conversion scenario.

The new FXR features and technologies on the acclaimed
FX platform include:

Both off-grid and grid-tied functionality in one unit

  • Seven programmable modes, including GridZero and Support Mode and built-in networked communications
  • Advanced Battery Charging (ABC) with expanded charging voltages and time parameters, enabling system designers to accommodate the specific charging profiles and algorithms of new and emerging energy storage technologies including Lithium Ion, Aqueous Ion and Flow chemistry batteries
  • Easy system upgradability in the field

FXR inverter/chargers can be paired with a MATE3 to add OPTICS RE to monitor and control system performance from any location. Available in power ranges from 2000W-3600W, multiple units may be stacked and connected with other OutBack Power electronics for more seamless system integration and the ability to function in a wide variety of applications, and system sizes. Up to nine inverters can be combined in a 3-phase system with the 12V, 24V or 48V models, and up to 36kW in a grid-tied 24V or 48V system. The exclusive modular system architecture means that increased power output is just an additional FXR inverter/charger away.

Available in sealed or vented units with NEMA type 1 die-cast aluminum chassis designed to operate in the harshest environmental conditions such as high temperatures, humidity or corrosive salt air, the FXR’s continue in OutBack’s tradition of absolute dependability in mission critical installations no matter how harsh or challenging the conditions.

Product Highlights:

  • Single-phase 120V, Sine Wave Output in 24V, or 48V Versions
  • 2800W, 3500W or 3600W Vented Models
  • Programmable for Seven Different Modes with Generator Assist
  • Modular, stackable design for up to Nine Inverters in Three-phase and 10 Inverters in Grid-tied
  • Up to 93% Operating Efficiency
  • Field Upgradable Software
  • Standard 5-Year Warranty with Optional 10-Year


Vented Models



Continuous Power Rating at 25° C

3500 VA

3600 VA

AC Output Voltage/Frequency

120 VAC / 60 Hz

120 VAC / 60 Hz

Nominal DC Input Voltage

24 VDC

48 VDC

Continuous AC RMS Output at 25° C

29.2 amps AC

30 amps AC

Idle Power: Full 

≈ 34 Watts

≈ 34 Watts

Idle Power: Search

≈ 9 Watts

≈ 9 Watts

Idle Power: Off

≈ 3 Watts

≈ 3 Watts

Typical Efficiency



CEC Weight Efficiency



Peak Efficiency



Total Harmonic Distortion: Typical



Total Harmonic Distortion: Maximum



Output Voltage Regulation

± 2.5%

± 2.5%

Maximum Output Current: Peak

70 amps AC

70 amps AC

Maximum Output Current: RMS

50 amps AC

50 amps AC

AC Overload Capability: Surge

6000 VA

6000 VA

AC Overload Capability: 5 Second

5400 VA

5400 VA

AC Overload Capability: 30 Minutes

4000 VA

4000 VA

AC Input Voltage Range (MATE3 Adjustable)

85 to 140 VAC

85 to 140 VAC

AC Input Frequency Range

54.0 to 66.0 Hz (45 to 55 Hz)54.0 to 66.0 Hz (45 to 55 Hz)

AC Input Tare Loss



Grid-Interactive Voltage Range

106 to 132VAC

106 to 132VAC

Grid-Interactive Frequency Range

59.3 to 60.5 Hz

59.3 to 60.5 Hz

AC Input Current Maximum

60 Amps AC60 Amps AC

Continuous Battery Charge Output

82 Amps DC82 Amps DC

Maximum Battery Charging (AC/DC/Power)

20 AAC/82 ADC/2230 VA20 AAC/45 ADC/2450 VA

DC Input Voltage Range

21 to 34 VDC42 to 68 VDC


Standard 5 year/Optional 10 year

Unit Weight

61 lbs/28 kg

Shipping Weight

67 lbs/30 kg

Unit Dimensions (H x W x L)

12 x 8.25 x 16.25" (30 x 21 x 41 cm)

Shipping Dimensions

21.75 x 13 x 22" (55 x 33 x 56 cm)

Rated Temperature Range

-20 to 50°C

Operating Temperature Range

-40 to 60°C

Storage Temperature Range

-40 to 60°C

Relative Humidity Rating



Listings & Certifications

UL 1741, CSA C22.2 No. 107.1, UL 1778 Annex FF

RoHS Compliant


Product Documents:


Manual Downloads

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Outback Grid Tie or Off Grid Hybrid Sinewave Inverter/Charger (24 & 48 volt models)

  • $2,199.00

Available options

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Tags: Outback, grid tie, gti, VFXR, VFXR3524A, VFXR3648A