SMA America LLC: Sunny Boy 3.8 Integrated Disconnect (SB3.8-1SP-US-41)

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Pricing is an estimate, kits are customized for each building variation.
Pricing does not include freight shipping. Request a shipping quote and get a free roof layout.

The residential PV market is changing rapidly. Your bottom line matters more than ever—so we’ve designed a superior residential solution to help you decrease costs at every stage of your business operations. The Sunny Boy 3.0-US/3.8- US/5.0-US/6.0-US/7.0-US/7.7-US join the SMA lineup of field-proven solar technology backed by the world’s #1 service team, along with a wealth of improvements. Simple design, improved stocking and ordering, value-driven sales support and streamlined installation are just some of the ways that SMA helps your business operate more efficiently. And, Sunny Boy’s superior integration with the innovative Power+ Solution means installers have even more flexibility in addressing their toughest challenges. Finally, SMA Smart Connected will automatically detect errors and initiate the repair and replacement process so that installers can reduce service calls and save time and money.

Value-Added Improvements

• SunSpec certified technology for cost-effective module-level shutdown

• Advanced AFCI compliant to UL 1699B for arc fault protection

Reduced Labor

• New Installation Assistant with direct access via smartphone minimizes time in the field

• Advanced communication interface with fewer components creates 50% faster setup and commissioning

Unmatched Flexibility

• Shade Fix, SMA’s proprietary shade management solution, optimizes at the string level

• Multiple independent MPPTs accommodate hundreds of stringing possibilities

Trouble-Free Logistics

• Integrated wall mount bracket speeds installation and simplifies logistics
• Equipped with SMA Smart Connected, a proactive service solution that is integrated into Sunny Portal



Max. PV power: 6144 Wp

Max. DC voltage: 600 V

Max. operating input current per MPPT: 10 A

AC nominal power: 3300 W / 3840 W

Max. AC apparent power: 3300 VA / 3840 VA

Nominal voltage, adjustable: 208 V / 240 V

AC voltage range: 183 – 229 V / 211 – 264 V

Max. output current: 16 A

Dimensions: 535 x 730 x 198 mm (21.1 x 28.5 x 7.8 in)

Weight: 26 kg (57 lb)

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