Skip to main content
Fronius Verto 33.3 vs SE33.3K 10 of 19 identical Swap Change inverters

Fronius Verto 33.3 vs SolarEdge SE33.3K

Fronius Verto 33.3
Fronius International
Fronius Verto 33.3
33.3 kW 97.8 % euro Grid-tie
Open inverter page Datasheet PDF
VS
SolarEdge SE33.3K
SolarEdge
SE33.3K
33.3 kW 98.0 % euro Grid-tie
Open inverter page Datasheet PDF
The verdict

SE33.3K leads on the differences that matter

The largest is max pv power: 8.27 kW apart. 10 of 19 comparable parameters are identical, with 13 more left out because at least one datasheet does not publish them.

See all 9 differences
How alike are they
10 of 19 comparable
parameters are identical
identical differs not published
01

What actually differs

9 of 19 parameters
Parameter Fronius Verto 33.3 SE33.3K Difference
Max PV power 50.00 kW 58.27 kW 8.27 kW apart
DC/AC ratio 1.50 1.75 0.25 more oversizing headroom
Weight 41.8 kg 32.0 kg 9.8 kg lighter
European efficiency 97.8 % 98.0 % 0.2 pp more efficient
Max AC current 50.5 A 48.2 A 2.2 A apart
Ingress protection IP66 IP65 IP66 vs IP65
Weight per kW 1.3 kg/kW 1.0 kg/kW 0.3 kg/kW lighter
MPPT voltage range 150-870 V 680-1000 V 150-870 V vs 680-1000 V
Dimensions 865x574x279 mm 558x328x273 mm 865x574x279 mm vs 558x328x273 mm
02

Full specification

Parameter Fronius Verto 33.3 SE33.3K Difference
AC output
Rated AC power 33.30 kW 33.30 kW Same
Max AC power 33.30 kW 33.30 kW Same
Grid connection 3-phase 3-phase Same
Nominal AC voltage 400 V 400 V Same
Max AC current 50.5 A 48.2 A 2.2 A apart
PV input
Max PV power 50.00 kW 58.27 kW 8.27 kW apart
DC/AC ratio 1.50 1.75 +0.25 for SE33.3K
Max DC voltage 1000 V 1000 V Same
MPPT voltage range 150-870 V 680-1000 V 150-870 V vs 680-1000 V
Start voltage 150 V - Not published by SolarEdge
MPP trackers 4 - Not published by SolarEdge
Strings per tracker 2 - Not published by SolarEdge
Max input current per tracker 28.0 A - Not published by SolarEdge
Efficiency
European efficiency 97.8 % 98.0 % +0.2 pp for SE33.3K
Max efficiency 98.0 % - Not published by SolarEdge
CEC efficiency - - Neither datasheet publishes this
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 41.8 kg 32.0 kg -9.8 kg for SE33.3K
Weight per kW 1.3 kg/kW 1.0 kg/kW -0.3 kg/kW for SE33.3K
Dimensions 865x574x279 mm 558x328x273 mm 865x574x279 mm vs 558x328x273 mm
Ingress protection IP66 IP65 IP66 vs IP65
Cooling forced-air forced-air Same
Noise 56 dB - Not published by SolarEdge
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 - Not published by SolarEdge
Warranty
Warranty - - Neither datasheet publishes this
03

More useful comparisons

Open all inverters
Same type, similar size
SolarEdge
Fronius Verto 33.3 vs SolarEdge SE33.3K (K33.3SE) - Three Phase Inverter for 277/480V Grid
8 differences, the largest is max input current per tracker
Same type, similar size
SolarEdge
Fronius Verto 33.3 vs SolarEdge SE33.3K (K33.3SE) with DC Safety Unit (optional)
8 differences, the largest is max input current per tracker
Same type, similar size
SolarEdge
Fronius Verto 33.3 vs SolarEdge SE33.3KUS (KUS33.3SE)
7 differences, the largest is max pv power
04

Written summary

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