SMA SB 3800U Sunny Boy 3800W Grid Tie Inverter

The SMA SB 3800U Sunny Boy 3800W Grid Tie Inverter is no longer available from Infinigi.

Regrettably, we do not have any inventory left nor have access to this product as it is discontinued. However, SMA has replaced the SB3800U with the following item:

.SMA SB 4000US Sunny Boy 4000W Grid Tie Inverter

Please note that we place this message on products that we have exhausted our options in obtaining. Contacting us will only reaffirm this message.

Thank you,
Infinigi Staff

SMA SB 3800U Sunny Boy 3800W Grid Tie Inverter

Introducing the latest addition to the SMA Sunny Boy Family: the new SMA Sunny Boy 3800U PV inverter. Over two decades of engineering experience has culminated with the creation of the SB3800U. Its new cast aluminum enclosure means lighter weight and better heat trans-fer for sensitive components. New construction and design techniques allow SMA to set the bar even higher when it comes to real-world efficiency and overall reliability. The new silver color and near silent operation will please even the most particular users. The new SB3800U, evidence that the pioneering spirit is alive and well at SMA.

Optimal Efficiency

SMA's new 3800 watt inverter processes solar energy at an unparalleled 95.6% efficiency and is the first of a new generationof inverters by SMA to be released in America. These new inverters incorporate a cast aluminum housing used to separate thecontrol and power electronics. This new chassis design is incredibly rugged, lightweight and weatherproof.

The power electro-nics compartment integrates SMA's new Opticool(TM) airflow technology where cool air is drawn in through the bottom of theenclosure by convection, drawn around the power electronics where the air absorbs heat and is then released through a sidevent. When required, this process is assisted by a temperature controlled fan. The built in meter displays system status as well as the solar energy being produced by the power plant and other key information on the LCD screen. Several meter and software options are available from your SMA, as well.


  • Exceptional efficiency
  • Outstanding reliability and energy capture ratio
  • LCD display included
  • 5-year comprehensive warranty - extended warranty available
  • Rugged cast aluminum outdoor rated enclosure
  • Easy to install integrated wall mount bracket system
  • Compatible with the SMA family of communications and data collection options
  • Very quiet operation
  • ETL Listed to UL 1741


  • Inverter Technology: Real sine-wave, current source, high frequency PWM
  • AC Input Voltage: 183 - 229 (208 V) - 211 - 264 (240 V)
  • AC Input Frequency: 59.3 - 60.5 (60 Hz)
  • AC Maximum Output Power @ 45°C:  3800W @ 240 VAC / 3500W @ 208 VAC
  • AC Maximum Output Current: 16 AAC
  • DC Maximum Input Voltage: 500 VDC
  • DC MPPT Voltage Range: 200 - 400 VDC @ 240 VAC / 180 - 400 VDC @ 208 VAC
  • DC Voltage Ripple: <10%
  • DC Maximum Input Current: 20 ADC
  • PV Start Voltage (Adjustable): 264 VDC @ 240 VAC / 229 VDC @ 208 VAC
  • Maximum Recommended PV Power: 4800 Wp
  • Max. PV Array Short Circuit Current: 34 ADC
  • Current THD: <3%
  • Power Factor: > 0.99 @ nominal power
  • Peak Inverter Efficiency: 95.6%
  • CEC Weighted Efficiency: 94.5%
  • Cooling: Forced, convection
  • Power Consumption: 0.1 W nighttime <7 W in operation
  • Ambient Temperature Rating: Up to 45°C (113°F) ambient at 3800W output power. Up to 60°C (140°F) ambient at reduced power
  • Enclosure: NEMA 3R
  • Dimensions: 17.8" W x 13.8" H x 9.3" D (452W x 351H x 236D mm)
  • Weight: 85 lb. (38.4 kg.)
  • Shipping Weight: 98 lb. (44.5 kg.)
  • Compliance: UL 1741, E210376, IEEE 519, IEEE 929, FCC Part 15 A & B
  • 5-year comprehensive warranty - extended warranty avaliable


Important note for the SMA SB 3800U Sunny Boy 3800W Grid Tie Inverter

Shipping Note: Due to the delicate/oversized nature of this product, our online shipping system is not able to accurately determine the cost for shipping. You may proceed with an online order and we will contact you prior shipping this item or please Contact Us and we will work to get you the exact shipping cost.
Note: Specifications and pricing of the SMA SB 3800U Sunny Boy 3800W Grid Tie Inverter subject to change without notice. Illustrations and descriptions of the SMA SB3800U do not claim to be complete or exhaustive.
PaypalVisaMastercardAmerican ExpressDiscover
Manufacturer Info
Share Product
Share via E-Mail 
 Share on Facebook Share on Twitter