Product Categories


Worldwide Delivery

Solar Gadgets

Technical Information

Select Solar - Secure Payments

Sunny Boy SB4000TL-21 On Grid Inverter

SMA Sunny Boy 4000TL-21 On-grid InverterClick to enlarge product image
SMA Sunny Boy 4000TL-21 On-grid Inverter
  • £989.28 inc. VAT

  • 07004DU08
  • 6 in stock
  • No reviews yet
  • More Details

  Name Code Power (W)   Dim. (L x W mm) Price UK Del.  
  Sunny Boy 1.5-1VL-40 On Grid Inverter 07004DU01 1500.00 460 x 357 £558.00 £15.00 Buy Now
  Sunny Boy 2.5-1VL-40 On Grid Inverter 07004DU02 2500.00 460 x 357 £759.36 £15.00 Buy Now
  Sunny Boy SB2500TL-21 On Grid Inverter 07004DU05 2500.00 490 x 519 £1224.31 £15.00 Buy Now
  Sunny Boy SB3000TL-21 On Grid Inverter 07004DU06 3000.00 470 x 445 £1047.36 £15.00 Buy Now
  Sunny Boy SB3600TL-21 On Grid Inverter 07004DU07 3680.00 490 x 519 £1020.76 £15.00 Buy Now
  Sunny Boy SB4000TL-21 On Grid Inverter 07004DU08 4000.00 470 x 445 £989.28 £15.00 Buy Now
  Sunny Boy SB5000TL-21 On Grid Inverter 07004DU09 4600.00 470 x 445 £1344.60 £15.00 Buy Now
The Sunny Boy 4000TL transformerless on-grid inverter from SMA Solar Technology is able to feed up to 4kW of solar power into practically any grid. Combined with the onboard Bluetooth technology fitted as standard (it uses a globally available frequency band), this means the device can operate worldwide. Country configuration is set with just two switches. 
Input & Efficiency
The broad input voltage range, up to 550V, allows for a variety of solar panels within an array. Additionally, SMA's OptiTrac Global Peak MPP tracker allows the unit to work with partly shaded pv systems with an efficiency of up to 97%.
This unit is a multi-string device with two independent DC converters. This means more complex pv configurations can be used.
The 4000TL is one of the new generation of Sunny Boy inverters with redesigns that have made the unit 20% lighter (and with less volume). It can be wall mounted outside - the electronics are protected by an IP65 enclosure and cooling is by SMA's OptiCool system. 
The spring clamp AC terminals mean that specialist tools are not required. Instead, wiring the unit is fast and allows for a quick install.
There's also an anti-theft system which helps to improve the security (and possibly insurance premiums too).
The Bluetooth based communication system means that the unit can be configured via a notebook or PC.
If you are enlarging an existing pv system, the unit will integrate with it as it is compatible with all SMA devices.

Input specifications (DC):

  • Max Power: 4200W
  • Voltage: 400V (Min 125V, Max 550V)
  • Max Current: 2x15A
  • Two independent MPP inputs, each with one (or two) strings of solar panels
  • Uses SUNCLIX connections

Output Specifications (AC):

  • Power: 4000W (at 230V 50Hz)
  • Max Current: 22A
  • Max Apparent AC Power: 4000VA


  • DC reverse polarity protection
  • ESS switch disconnector
  • AC short circuit tolerance
  • Ground fault monitoring
  • Grid monitoring
  • All-pole-sensitive residual current monitoring unit

Other Details:

  • Dimensions: 470mm (w) x 445mm (h) x 180mm (d)
  • Weight: 25kg
  • 5 Year Warranty
  • OptiCool active temperature management
  • Robust housing for indoor/outdoor fitting
  • *
  • *
  • *
  • *
  • Send to Friend
Feedback Form
Customer Feedback