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Symo 12.0-3 208-240 vs Primo 11.4-1 11 of 19 identical Swap Change inverters

Fronius Symo 12.0-3 208-240 vs Fronius Primo 11.4-1

Fronius Symo 12.0-3 208-240
Fronius International
Fronius Symo 12.0-3 208-240
11.995 kW Grid-tie
Open inverter page Datasheet PDF
VS
Fronius Primo 11.4-1
Fronius International
Fronius Primo 11.4-1
11.4 kW Grid-tie
Open inverter page Datasheet PDF
The verdict

Symo 12.0-3 208-240 leads on the differences that matter

The largest is rated ac power: 0.59 kW apart. 11 of 19 comparable parameters are identical, with 13 more left out because at least one datasheet does not publish them.

See all 8 differences
How alike are they
11 of 19 comparable
parameters are identical
identical differs not published
01

What actually differs

8 of 19 parameters
Parameter Symo 12.0-3 208-240 Primo 11.4-1 Difference
Rated AC power 11.99 kW 11.40 kW 0.59 kW apart
Max AC power 11.99 kW 11.40 kW 0.59 kW apart
Weight 34.8 kg 37.4 kg 2.6 kg lighter
Max efficiency 97.0 % 96.7 % 0.3 pp more efficient
Grid connection 3-phase Single-phase 3-phase vs Single-phase
Max AC current 33.3 A 47.5 A 14.2 A apart
Start voltage 200 V 80 V 120 V earlier start
Weight per kW 2.9 kg/kW 3.3 kg/kW 0.4 kg/kW lighter
02

Full specification

Parameter Symo 12.0-3 208-240 Primo 11.4-1 Difference
AC output
Rated AC power 11.99 kW 11.40 kW 0.59 kW apart
Max AC power 11.99 kW 11.40 kW 0.59 kW apart
Grid connection 3-phase Single-phase 3-phase vs Single-phase
Nominal AC voltage - 240 V Not published by Fronius International
Max AC current 33.3 A 47.5 A 14.2 A apart
PV input
Max PV power - - Neither datasheet publishes this
DC/AC ratio - - Neither datasheet publishes this
Max DC voltage 1000 V 1000 V Same
MPPT voltage range - 200-800 V Not published by Fronius International
Start voltage 200 V 80 V -120 V for Primo 11.4-1
MPP trackers - 2 Not published by Fronius International
Strings per tracker - - Neither datasheet publishes this
Max input current per tracker - 33.0 A Not published by Fronius International
Efficiency
European efficiency - - Neither datasheet publishes this
Max efficiency 97.0 % 96.7 % +0.3 pp for Symo 12.0-3 208-240
CEC efficiency 96.5 % 96.5 % Same
Battery
Battery input - - Neither datasheet publishes this
Battery voltage - - Neither datasheet publishes this
Max charge current - - Neither datasheet publishes this
Backup power - - Neither datasheet publishes this
Physical
Weight 34.8 kg 37.4 kg -2.6 kg for Symo 12.0-3 208-240
Weight per kW 2.9 kg/kW 3.3 kg/kW -0.4 kg/kW for Symo 12.0-3 208-240
Dimensions 724x511x226 mm 724x511x226 mm Same
Ingress protection NEMA 4X NEMA 4X Same
Cooling forced-air forced-air Same
Noise - - Neither datasheet publishes this
Max operating temperature 60 °C 60 °C Same
Connectivity and safety
Wi-Fi Yes Yes Same
Ethernet Yes Yes Same
Arc fault protection Yes Yes Same
Integrated DC switch Yes Yes Same
Warranty
Warranty 10 yrs 10 yrs Same
03

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04

Written summary

Every figure here is from the manufacturers' own datasheets - a dash means the value is not published, never an estimate.