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Off-Grid Inverter / Charger

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Outback Radian GS8048 Inverter 48 Vdc, 120 / 240 VAC Pure Sine Wave power

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  • Outback Radian Inverter BP2550053
  • OutBack inverter/chargers are a complete power DC battery to Ac system grid-interactive system. 8,000 watts (8 kW) of continuous power at 48 Vdc. Outback inverters can provide home backup power as well as grid interactive energy so you can sell power back to the utility grid or have a complete stand alone off-grid power source. The battery to pure sine wave 120/240 60 Hz can charge your battery bank from  the grid, or you can connect this system to solar panels using optional Outback FlexMax charge controllers. Stackable in parallel configuration allowed up to 10 outback inverters to 80 kW. Modular internal design allows low idle consumption and high efficiency at both high and low power operation. Certified by ETL to UL1741 and CSA C22.2
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Outback Radian Inverter / Charger Home Power Center

Model Part Number Output Watts Output Current Voltage DC/AC Type Shipping Weight
Radian GS-8048 BP2550053 8,000 50 Amps 48 / 120 or 240V Off-Grid
125 lbs


OutBack inverter/chargers are the next generation in advanced power management. Each is a DC to AC Sinewave inverter, battery charger and AC transfer switch integrated into one chassis. Just like the local utility grid, the inverter produces pure Sinewave AC electricity for your stand alone or back-up power needs. Computers, TVs and pumps are just some of the examples of modern electronics that last longer and run better when powered with pure Sinewave electricity from an OutBack inverter. Starting up your air conditioning, washing machine or well pump is worry-free because of OutBacks high surge power capability. Batteries and generators are the costly consumables when using inverters to generate electricity. The integrated smart battery charger uses multiple stages to perform quick recharging while prolonging battery life, saving your batteries and generator from unnecessary wear. Automatic switching between AC power sources is seamless due to an AC transfer switch that reacts in less than 16 milliseconds. Unique networked communication is built into all OutBack products providing complete integration. Expanding your system with your growing power needs is as simple as adding additional inverters with OutBacks modular system architecture. Further flexibility is provided with the ability to be connected at any time in either parallel, series or three-phase power configurations. Industry leading OutBack reliability is achieved through simplified design and rugged construction.

Complete your inverter OutBack system interface using the OutBack MATE3 and HUB communications manager and GS load center. Radian series GS load center completes the interface acting as balance-of-systems enclosure designed to seamlessly integrate with the Radian Series inverter/chargers, FLEXmax Charge Controllers, and OutBack HUB Communications Manager. Additional features of the GSLC line include its powder-coated gal anneal chassis, ample knockout locations fitting 1/2” to 2” conduit, aesthetic stainless steel door and simple mounting to a Radian Series inverter/charger. It is listed to UL1741 and CSA C22.2 No. 107.1-01, is Type 1 indoor rated (IP30) and can also be used on its own as a separate breaker enclosure for use with other inverter models.

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What's In The Box

  • 1 - Outback Radian GS-8048 Inverter BP2550053

Outback Radian Inverter Battery Considerations

Choose the off-grid battery option that best fits your needs. The size of the battery bank you choose depends on the amount of power you require (Watts), the amount of time each day you expect to run your appliances, equipment and lights, and your location or available sunlight (If you are adding solar or wind power). As a rule-of-thumb, when considering batteries off-grid, use 3 days of autonomy (No Sun) as a minimum and 50% depth of discharge for your battery bank.
Battery Options Volts Watt Hours # Batteries Includes Price  
Outback EnergyCell 200RE 12VDC 9,600 Watt Hours 4 Outback 200 aH AGMbattery Cables + Free Shipping
UPG Battery Bank 6VDC 4,800 Watt Hours 4 UPG 200 aH 6V AGM charge controller Cables + Free Shipping


Optional Accessories Part # Price  
GSLC 175-120/240 - Pre-wired with dual 175ADC inverter breakers, dual AC inputs and AC maintenance bypass. Ideal for systems with a single Radian inverter and an AC power source. ac power BP2550055solar charger
GSLC2CC 175A Solar - 120/240 - Pre-wired with dual 175ADC inverter breakers, dual AC inputs, AC maintenance bypass, solar GFDI, and two solar array inputs, Flexnet DC battery monitor and three shunts. “Plug and play” for systems which have a single Radian inverter and two charge controllers and need battery monitoring. The GSLC175-PV-120/240 is the "fully loaded" version of the GS Load Center. It has all components already present and needs only to have external wiring and devices added. (Charge Controller / Monitor Sold Separately)home inverter BP2550056solar inverter
Outback Comprehensive Battery Enclosure (Batteries Sold Separately) - Up to 600AH / 28.8 kW / 28,800 Wattsenclosure BP9890051battery rack
outback energycell
Outback Battery Enclosure w/ 4 - Outback EnergyCell 200RE Batteries Expandable to 12 Batteries / 28.8kWh Backup Power
BP9890050-1outback rack
OutBack Mate Remote Monitor / Controllerbattery charger BP9578062monitor
OutBack Mate 3 Remote Monitor / Controllerradian BP9578732outback
Outback Remote Temperature Sensordc electricity BP9500102remote temperature sensor


Charge Controller Part Number   Input Current System Voltage Type Price
OutBack FlexMax 60morningstar controllers BP3552283 dc charge controller 60 Amps 12, 24, 36, 48, 60 VDC *MPPT
OutBack FlexMax 80 BP3510605 controller 80 Amps 12, 24, 36, 48, 60 VDC *MPPT


outback radian inveter

Outback Radian Inverter Electrical Specifications

Nominal DC Input Voltage 48 VDC
Continuous Output Power at 25 °C 8000 VA
AC Output Voltage 120/240 VAC
AC Output Frequency 60 Hz
Continuous AC Output Current at 25 °C 33.3 AAC at 240 VAC
Waveform True Sinewave
CEC Weighted Efficiency 90%
Total Harmonic Distortion (Typical) <5% THD, Max single voltage harmonic <2%
Output Voltage Regulation +/- 2%
Maximum Output Current (1 ms peak) 100 AAC at 240 VAC, 200 AAC at 120 VAC
Maximum Output Current (100 ms RMS) 70.7 AAC at 240 VAC
Overload Capability (100 ms surge) 16.97 kVA at 240 VAC
Overload Capability (5 second) 12 kVa
Overload Capability (30 minute) 9 kVa
Idle Consumption - Invert mode, no load 30 Watts
AC Input Voltage Range (Adjustable) (L1 or L2) 70 - 140 VAC
AC Input Frequency Range 54 - 66 Hz
Grid-Interactive Voltage Range (Default) (L1 or L2) 108 - 132 VAC
Grid-Interactive Frequency Range (Default) (L1 or L2) 59.3 - 60.5 Hz
AC Input Current (Maximum) 50 AAC at 240 VAC
Battery Charger Maximum AC Input 30 AAC at 240 Vac
Battery Charger Maximum DC Output 115 ADC
DC Input Voltage Range 40 - 64 VDC
DC Input Current at Rated Power 200 ADC
Maximum DC Input Current on Surge 424.2 ADC
Auxiliary Output 0.7 ADC at 12 VDC
Auxiliary Relay 10 A at 250 VAC/30 VDC (resistive)

Mechanical Specifications
Inverter Dimensions (H x W x D) 28 x 16 x 8.7" (71.1 x 40.6 x 22.2 cm)
Shipping Dimensions (H x W x D) 14.5 x 34.5 x 21" (36.8 x 87.6 x 53.3 cm)
Inverter Weight 125 lbs (56.8 kg)
Shipping Weight 140 lbs (63.6 kg)
Accessory Ports Remote Temperature Sensor and MATE3/HUB Communications
Non-volatile Memory Yes
Field Upgradable Firmware Yes
Chassis Type Vented
home power

Outback Radian Inverter / Charger Documents & Manuals

outback power Outback Radian Data Sheet
outback manual Outback Radian Owners Manual
string calculator Outback String Calculator Explanation

Outback Radian Inverter Charger 48 Vdc, 120 / 240 VAC Pure Sine Wave Home Power

Outback Radian Inverters are solid-state electronic device that, when sized properly, can be used in nearly every solar and wind energy system that uses batteries. Radian inverter / charger provides a comprehensive answer for grid-tied and stand-alone power systems. Based upon a proven foundation of reliable technology, but engineered from the ground up to simplify the design, distribution, installation and implementation of energy storage, the standardized structure and integration with the GS Load Center make it easy to provide a successful solution to any power requirement, on-grid, backup power source and off-grid power. The power centers Blue Pacific Solar sells employ the latest in power electronics to regulate the battery charge by controlling the charging voltage and current from a solar panel array. Inverters / chargers regulate the charge of the battery, but also prevent the battery from being over discharged which can damage the battery bank.

Outback Radian Inverter uses multiple stages of control to regulate different voltage and current levels. The voltage and current of a battery varies over the different stages of battery charge. Though the amount can vary, the bulk charge usually is approximately 80%, the absorption charge is 10% with the float charge representing the balance of the battery charging process.

The bulk charging stage of the Outback Radian Inverter / charger process is the first stage to used to bring the battery depth of discharge (DOD) back to 100%. The bulk charge stage happens first in in the morning after the batteries DOD has drained down since sunset the previous day. The bulk charging stage pushes as many amps into the battery bank as possible from the solar panels and gets the voltage up in the process. The effect of a charge controller is not unlike trying to fill a glass of water from a faucet. You first turn the faucet on full while the glass if filling, then slowly taper off the pressure until the glass is full. When the battery bank reaches a predetermined level known as the bulk voltage set-point, the charge is then substantially slowed. Because the bulk voltage set point is determined by the type of battery you are using, many charge controllers have to be pre-set to the type of battery which will dictate the rate of charge.

The second state of charge the Outback Radian Inverter employs is the absorption stage. After a battery system has been brought up to the bulk voltage set point, the charge controller slows down the charge rate because the battery bank cannot accept the same rapid charging pace without overheating and damaging the battery bank. At the absorption stage a battery bank is only about 80% full. The absorption charge is the function level in the process that tops off the battery bank. During the absorption stage, the charge controller holds the battery volts constant and reduces the amount of current sent into the battery. When the absorption stage is complete, the battery bank is fully charges.

The final step the Outback Radian Inverter performs is the float charge. Typically a charge controller enters into a float charge state when the other charge levels of the battery bank has been achieved. When the number of peak sun hours is limited, a solar charge controller may not be able to get the battery bank back to the float stage before the next cycle begins.

outback inverters IMPORTANT SAFETY INSTRUCTIONS: Outback Radian Inverter. (OK, here is the scary legal disclaimer.) It is the responsibility of the purchaser to ensure that all products are installed and operated in accordance with local and national building codes as specific by the NEC (National Electric Code), UBC (Uniform Building Code) or IBC (International Building Code) and local utility company policy. This product is designed for indoor or protected compartment installations. DO NOT expose the Outback radian inverter to rain, snow, moisture or liquids of any type. Use insulated tools to reduce the chance of electrical shock or accidental short circuits. Remove all jewelry such as rings, watches, bracelets, etc when installing the Outback Radian Inverter or any other electronic gear. Always disconnect the batteries or energy source prior to installation or performing maintenance on the Outback Radian Inverter Live power may be present at more than one point since an inverter utilizes both batteries and AC electricity. Turning off the Outback Radian Inverter may not reduce that risk. Always verify proper wiring prior to starting the inverter. Do not operate the Outback Radian Inverter / charger if it has been damaged. Always read and follow the manufactures installation and operating instructions for the Outback Radian GS-8048 Inverter prior to installation and operation.