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SMA, SB5.0-1AV-41

SMA Sunny Boy 5.0

Single-phase 5 kW string inverter with 2 MPPTs, 7.5 kWp PV input and built-in AFCI, weighing 17.5 kg. Range covers 3 to 6 kW.

AC output
5 kW
Max PV input
7.5 kW
MPPT trackers
2
Warranty
10 yrs

Our read of the datasheet

The Sunny Boy 5.0 is a 5 kW single-phase string inverter, a size often paired with a 6.6 kW array. SMA allows up to 7.5 kWp of panels, 150% of the AC rating, across two MPPTs rated for 15 A each, with two strings allowed on each MPPT. The 15 A limit is close to the operating current of some newer high-current panels.

It has no battery input and no backup output. SMA says its storage solutions can be added at any time, which would be a separate battery system alongside this inverter. SMA ShadeFix shade management, AFCI arc-fault detection, WLAN and Ethernet are built in.

Peak efficiency is 97.0% and European efficiency 96.5%. The standard warranty is 5 years, extended to 10 years at no cost when the inverter is registered with SMA.

We have not tested this inverter. This summary follows from the manufacturer's published specifications, checked 23 September 2026.

Strengths

  • Two MPPTs with two strings each
  • Integrated AFCI and ShadeFix shade management
  • Light at 17.5 kg
  • 10-year warranty with free registration

Things to check

  • No battery input or backup output
  • 150% PV oversizing limit
  • 15 A per MPPT is tight for some high-current panels

Specifications

Type
String
Rated AC output
5 kW
Phases
Single-phase
MPPT trackers
2
Max PV input
7.5 kW
Max efficiency
97%
Backup
None
Compatible batteries
No battery input; SMA storage can be added as a separate system
Warranty
10 years
IP rating
IP65
Weight
17.5 kg
Manufacturer datasheet

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