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Fronius Primo 3.8-1 TL > 3.8 kW Single Phase Grid-Tie Inverter - AFCI, UL-1741-SA

Fronius Primo 3.8-1 TL > 3.8 kW Single Phase Grid-Tie Inverter - AFCI, UL-1741-SA

Our Price: $1,436.75

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Product Code: FRONIUS-PRIMO-3-8-1-TL

Description Datasheet

Fronius Primo TL > 3800 W Single Phase Grid-Tie Inverter - AFCI, UL-1741-SA

Design flexibility and unrivaled power capability in one sleek package.

UL 1741 SA (Rule 21) Compliant

The Fronius Primo TL inverter series has been specially developed for the demands of the North American market. With power categories from 3.8 to 15 kW, the single-phase, transformerless device is the perfect inverter for private households. Its innovative SuperFlex Design provides maximum flexibility in system design, while the SnapINverter mounting system makes installation and maintenance as easy as possible. The communication package included as standard, with WLAN, energy management, several interfaces and much more besides, makes the Fronius Primo a communicative inverter for home owners. Standard equipment also includes a built-in arc detector (Arc Fault Circuit Interrupter), in keeping with all other North American SnapINverters.


Model 4,210,064,800
Series Primo
Manufacturer Fronius


Type Grid-Tie
Ambient Operating Temperature Range -40 to 131 F
-40 C to 55 C
Enclosure Nema 4x
Cooling Controlled forced ventilation, variable speed fan
Dimensions (W x H x D) 16.9" x 24.7" x 8.1"
Installation Indoor and outdoor installation
Permitted humidity 0 - 100 %
DC connection terminals 2x DC+1, 2x DC+2 and 4x DC- screw terminals for solid: copper and aluminium stranded / fine stranded: copper and aluminium
AC connection terminals Screw terminals 12 - 6 AWG
Revenue Grade Metering Optional (ANSI C12.1 accuracy)
Certificates and compliance with standards UL 1741-2015, UL1998 (for functions: AFCI, RCMU and isolation monitoring), IEEE 1547-2003, IEEE 1547.1-2003, ANSI/IEEE C62.41, FCC Part 15 A & B, NEC 2014 Article 690, C22. 2 No. 107.1-01 (September 2001) , UL1699B Issue 2 -2013, CSA TIL M-07 Issue 1 -2013
Weight 47.4 lbs
Shipping Method Ground

Input (DC)

Max. permitted PV power (kWp) 5.7 kW
Max. usable input current (MPPT 1/MPPT 2) 18 A / 18 A
Total max. DC current 36 A
Max. admissible input current (MPPT 1/MPPT 2) 27 A
Operating voltage range 80 V - 1,000 V
Max. input voltage 1,000 V
Nominal input voltage 410 V
Admissible conductor size DC AWG 14 - AWG 6
MPP voltage range 200 - 800 V
Number of MPPT 2

Output (AC)

18.3 @208V
Maximum Output Power 3800 W @ 240V
3800 W @ 208V
Max. output fault current / Duration 584 A Peak / 154 ms @240V
Max. continuous output current 15.8 A @ 240V
18.3 A @ 208V
Recommended OCPD/AC breaker size 20 A @ 240V
25 A @ 208V
Max. efficiency (Lite version) 97.9 %
CEC efficiency (Lite version) 240V 95.5 %
Admissible conductor size AC AWG 14 - AWG 6
Grid connection 208 / 240 V
Frequency 60 Hz
Total harmonic distortion < 5.0 %
Power factor 0.85 - 1 ind./cap


  • 10 Year Warranty
  • SnapINverter mounting system
  • Wireless monitoring
  • Open data communication
  • Smart Grid Ready
  • AFCI (Arc Fault Circuit Interruption)
  • Ground Fault Protection with Isolation Monitor Interrupter
  • DC disconnect
  • DC reverse polarity protection

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