Sunny Boy inverters
Model: Sunny Boy 4000TL-US
Brand: SMA Inverters
Product Type: Inverters
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"The secure power supply feature is great for emergencies."
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Sunny Boy 4000TL-US
SMA has introduced their first series of transformerless grid-tie inverters packed full of new features allowing you get the most out of your system. With dual MPP trackers the Sunny Boy 4000TL-US can easily manage multiple roof orientations and system configurations maximizing power production.

  • Transformerless for increased efficiency and lighter weight
  • Dual maximum power point tracking for more design options
  • Reduce effects of partial system shading with OptiTrac™
  • Built-in LCD screen for output display
  • Flexible design and simple installation

The new transformerless design provides maximum power production with 96.5% CEC efficiency a greater operating voltage range of 125V to 600V all while reducing the size and weight.

The Sunny Boy 4000TL-US ships with a handful of new features including an SMA exclusive Secure Power Supply (SPS) which can provide up to 1,500 watts of dedicated power in the event of a daytime power outage. Watch a video about the Secure Power Supply

The built in LCD screen allows the user to view up to the minute system information as well as control and manage critical information.

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Sunny Boy 4000TL US inverter

Call Wholesale Solar for current pricing on Sunny Boy 4000-TL-US 4,200-watt inverter at 1-800-472-1142.

Product Manual
Product Specifications Installation Manual Warranty
Model Volts Watts Weight (lbs.) Item
Sunny Boy 4000TL-US 208/240 4,200 60 2931716

Accessories Item Price
SMA SWDM-10 Data-Module for Webconnect 2960018
SMA Sunny Beam Wireless System Monitor 2958232 CALL
SB RS-485-N Module for remote communication to PC 9960133 CALL
SMA Sunny WebBox Web Enabled Data Logger & Control 1960493
SMA Ambient Temperature Sensor for Sunny Sensor Box 2931955 CALL
SMA Anemometer Sensor for Sunny Sensor Box 2931935
SMA Bluetooth Card for Sunny Beam Monitoring System 9931215 CALL
SMA Sunny Sensor Box Power Injector RS48 2931925 CALL

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Features and General Information

  • Transformerless topology reduces weight while increasing efficiency
  • Secure Power Supply (SPS) for daytime power supply during a grid failure
  • Improved efficiency up to 97.2%
  • Dual Maximum Power Point Tracking allowing more system configurations
  • Built-in LCD output display
  • Simplified DC wiring
  • Free Sunny Portal monitoring with global access
  • Integrated fused series string combiner
  • Comprehensive SMA communications and data collection options
  • Ideal for residential or light commercial applications
  • Rugged cast aluminum outdoor rated enclosure
  • Wall mounting plate with anti-theft lock

  • How to Choose an Inverter for your power system
  • Inverters: What is a Sine Wave?
Protection Features

  • Isolation monitoring
  • Surge voltage protection
  • Interruption protection
  • LED indicator for malfunction
  • Ground fault protection
  • Rugged outdoor enclosure
Secure Power Supply
Sunny Boy Transformerless Inverter Introduction
Sunny Boy 4000TL-US
Input Data (DC)
Maximum input power (STC) 4,200 W
Maximum system voltage 600V
Rated MPPT voltage range 175V - 480V
Minimum operating voltage 125V
Start voltage, no-load status 150V
Max. input current / per MPPT input 24A / 15A
MPP tracking inputs 2
Strings per MPP tracking input 2
Output Data (AC)
@208 Vac, 60 Hz @240 Vac, 60 Hz
Nominal power 4,000W 4,000W
Maixmum apparent power 4,000VA 4,000VA
Maximum output current 20A 20A
Voltage/range 183V-229V 211V-264V
Frequency/range 59.3-60.5 Hz 59.3-60.5 Hz
Total harmonic distortion ≤ 4% ≤ 4%
Power factor @ rated power 1 1
Connection conductor 2 2
Output connections L1,L2,N,PE L1,L2,N,PE
@208 Vac, 60 Hz @240 Vac, 60 Hz
CEC weighted efficiency 96% 96.5%
Peak inverter efficiency 96.8% 97.2%
Night time power consumption <1W
Mechanical Data
Temperature range -40ºC to +60ºC (-40ºF to +140ºF)
Inverter dimensions (WxHxD) 490mm x 519mm x 185mm (19.3” x 20.5” x 7.3”)*
Disconnect dimensions (WxHxD) 187mm x 297mm x 190mm (7.4” x 11.7” x 7.5”)
Inverter weight 24 kg (52.9 lbs)
Disconnect weight 2 kg (4.4 lbs)
Cooling Natural convection – no fans
Enclosure environmental rating NEMA 3R
*without mounting bracket
Compatibility Compatible with most PV modules
Warranty 10-year limited warranty
Compliance UL1741/IEEE1547, IEEE 929-2000, Canadian Electrical Code, CSA C22.2 NO.107.1-01