SMA
Sunny Boy US-41
Transformerless Grid Tie Inverters
w/SunSpec Rapid Shutdown

The latest and greatest versions of the SMA Sunny Boy Transformerless Inverters (-US-41) offer integrated SunSpec-compliant technology.  It fulfills UL 1741, NEC 2014, and NEC 2017 requirements and is compatible with the power line-based SunSpec Rapid Shutdown communication signal over DC wires, making it the most simple and cost-effective rapid shutdown solution on the market.

*NOTE:  SMA is having component issues around the Wifi features of their inverters.  See DOCUMENTS tab for official statement and options available.  In the interim, the V2 versions listed above will be shipped that do NOT have the integrated Wifi functionality.  Installers may still use ethernet (wired) communications for commissioning and operation.

Features

• NEW! SunSpec certified inverter technology in conjunction with the TS4-R-F, which gives PV installers a more cost-effective way to achieve compliance with NEC 2017 module-level shutdown
• Advanced AFCI compliant to new Standard UL 1699B Ed.1 for arc fault protection – delivering improved safety and reliability while allowing for automatic resetting
• New Installation Assistant with direct access via smartphone minimizes time in the field
• SMA Smart Connected will automatically detect errors and initiate the repair and replacement process so that installers can reduce service calls
• Integrated wall mount bracket speeds up installation time
• Less components - Rooftop Communication Kit is NOT needed with TS4-R-F unit + SB-41 Inverter
• Secure Power Supply (SPS) included
• SPS is NOT compatible with the SunSpec Rapid Shutdown functionality so will not function if TS4-R-F is in use.  Only functions with the TS4-R-O unit.
• DC disconnect integrated in - speeds up installation time, and only 1 box to ship
• Connect to user interface either with Ethernet Cable or Wirelessly (WLAN)
• Broad voltage range enables production under a variety of conditions
• Extended operating temperature range allows for extended daily production
• Two or Three MPP trackers (depending on the model - see table) provide numerous design options for complex roofs
• Transformerless topology results in lighter weight and higher efficiency
• Free Sunny Portal monitoring with global access
• Large informative graphic display for easy viewing
• 10 Year Warranty - extendable to 15 or 20 years

Specifications

Input (DC) 208V/240V	SB3.0-1SP-US-41	SB3.8-1SP-US-41	SB5.0-1SP-US-41	SB6.0-1SP-US-41	SB7.0-1SP-US-41	SB7.7-1SP-US-41
Max DC Power	4800W	6144W	8000W	9600W	11200W	12320W
Max DC Voltage	600V
Rated MPPT Voltage Range	155-480V	195-480V	220-480V		245-480V	270-480V
MPPT Operating Voltage Range	100 - 550V
Min DC Voltage/Start Voltage	100V /125V
Max Operating Input Current /Per MPP tracker	10A
# MPP Trackers/Strings per MPP	2/1		3/1
Output (AC)	SB3.0-1SP-US-41	SB3.8-1SP-US-41	SB5.0-1SP-US-41	SB6.0-1SP-US-41	SB7.0-1SP-US-41	SB7.7-1SP-US-41
Nominal AC Voltage (Adjustable)	208/ 240 VAC
AC Nominal Power (Max AC Power)	3000W	3300W/3840W	5000W	5200W/6000W	6660W/7000W	6660W/7680W
AC Voltage Range	183-229V / 211-264V
AC Grid Frequency Range	60 Hz / 50 Hz
Max Output Current	14.5A/ 12/5A	16A	24A/21A	25A	32A
General	SB3.0-1SP-US-41	SB3.8-1SP-US-41	SB5.0-1SP-US-41	SB6.0-1SP-US-41	SB7.0-1SP-US-41	SB7.7-1SP-US-41
Max Efficiency	97.2% / 97.6%	97.2% / 97.5%		97.2% / 97.6%	97.1% / 97.5%
CEC Efficiency	96.5%
Operating Temperature Range	-13°F to +140°F
Outdoor Rating	NEMA 3R
Shipping Weight / Dimensions	66 lbs (24" x 31" x 12")

FAQs:

• Are SMA SunSpec Rapid Shutdown certified inverters compatible with other TS4-F devices such as Tigo Energy TS4-R-F / TS4-A-F ?
No, these devices are not currently certified by the SunSpec organization for compliance with the SunSpec Rapid Shutdown communication protocol and therefore SMA cannot guarantee compatibility with these devices.
• Are SMA TS4-R-F rapid shutdown devices compatible with non-SMA inverters which are also certified by the SunSpec organization for compliance with the SunSpec Rapid Shutdown communication protocol?
  
Yes, products which are certified by the SunSpec organization for compliance with the Rapid Shutdown communication protocol are certified for compatibility and interoperability.
• Are SMA TS4-R-F rapid shutdown devices compatible with external Rapid Shutdown transmitters such as the Tigo Energy RSS Transmitter?
No, external rapid shutdown transmitters which are not currently certified by the SunSpec organization for compliance with the SunSpec Rapid Shutdown communication protocol are not compatible with SMA TS4-R-F rapid shutdown devices.