Out of stock

SMA Sunny Boy Inverter 3.8kw SB-3.8-1SP-US-41

price as of May 21
Solar Loan from 6.99%
All SMA America LLC products


Input Voltage DC600
Output Voltage AC240
Solar panel compatibility60/72 - 120/144 cell
TypeGrid-Tie Inverters
Rated Efficiency97.6%
Dimensions LxWxH21.1" x 28.5" x 7.8" in
Weight57 lbs
ManufacturerSMA America LLC
Manufacturer Part #SB-3.8-1SP-US-41
Operating Temperatures -40 °F to +140 °F
Warranty10 Years Manufacturer
Delivery Time 5-7 business days

About product

Sunny Boy 3.8-US w/integrated DC Disconnect, LCD, Grey Lid, AFCI, 208 & 240VAC; SunSpec Compliant.

The SMA "-41" Series Sunny Boy inverter, featuring SunSpec signal transmitter chip, is one of the most versatile residential inverters available. Combine this series with the SMA-TS4-R-F in order to build cost effective NEC 2017 PV RSS compliant string systems, or pair with SMA-TS4-R "-S" / "-O" (and comms gateway) to provide module level monitoring / optimization (respectively). Or leave all the rooftop electronics behind and design the system to take full advantage of the Secure Power Supply (SPS feature not Compatible with Sunspec based PV RSS). 600V max system DCV, compatible with both 240V and 208V sites, and backed by SMA's Power customer service package.

  • Manufacturer Part Number: SB3.8-1SP-US-41
  • Power Output: 3800 Watts
  • Voltage: 208 Volt 240 Volt
  • Shipping Weight: 66 lb
  • Shipping Dimensions: 12 x 24 x 31 in
  • Pallet Qty: 8

Reviews & Questions

  • Reviews (3)
  • Questions (1)
A1solarstore was very helpful along the way. Me and my wife used the solar calculator to size a system and picked this inverter. Highly recommend
07/09/2021 09:53 pm
This inverter is quite small, but it does its job. I found it very convenient for my needs: I can watch the performance of my system wherever I want. Feels good to go solar.
06/22/2021 06:13 pm
We’ve bought this inverter along with the panels (Canadian Solar). Our system is small, and this Sunny Boy fits it well. The shipment was fast and so far our solar project is going great.
Jen Myers
06/03/2021 02:52 pm

Leave a review

Is SMA Sunny Boy Inverter 3.8kw SB-3.8-1SP-US-41 suitable for off-grid installation? The type is listed as grid-tie inverter, but it also mentions both grid-tied and off-grid
05/18/2021, 17:18
No Its an on-grid inverter.