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SolarEdge SE33.3K (K33.3SE) - Three Phase Inverter for 277/480V Grid vs Fronius Verto 33.3 15 of 23 identical Swap Change inverters

SolarEdge SE33.3K (K33.3SE) - Three Phase Inverter for 277/480V Grid vs Fronius Verto 33.3

SolarEdge
SolarEdge SE33.3K (K33.3SE) - Three Phase Inverter for 277/480V Grid
33.3 kW 98.0 % euro Grid-tie
Open inverter page Datasheet PDF
VS
Fronius Verto 33.3
Fronius International
Fronius Verto 33.3
33.3 kW 97.8 % euro Grid-tie
Open inverter page Datasheet PDF
The verdict

SolarEdge SE33.3K (K33.3SE) - Three Phase Inverter for 277/480V Grid leads on the differences that matter

The largest is max input current per tracker: 12.0 A more headroom. 15 of 23 comparable parameters are identical, with 9 more left out because at least one datasheet does not publish them.

See all 8 differences
How alike are they
15 of 23 comparable
parameters are identical
identical differs not published
01

What actually differs

8 of 23 parameters
Parameter SolarEdge SE33.3K (K33.3SE) - Three Phase Inverter for 277/480V Grid Fronius Verto 33.3 Difference
Max input current per tracker 40.0 A 28.0 A 12.0 A more headroom
Weight 45.0 kg 41.8 kg 3.2 kg lighter
European efficiency 98.0 % 97.8 % 0.2 pp more efficient
Nominal AC voltage 480 V 400 V 80 V apart
Max AC current 40.0 A 50.5 A 10.5 A apart
Ingress protection IP65 IP66 IP65 vs IP66
MPPT voltage range 680-1000 V 150-870 V 680-1000 V vs 150-870 V
Dimensions 540x315x260 mm 865x574x279 mm 540x315x260 mm vs 865x574x279 mm
02

Full specification

Parameter SolarEdge SE33.3K (K33.3SE) - Three Phase Inverter for 277/480V Grid Fronius Verto 33.3 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 480 V 400 V 80 V apart
Max AC current 40.0 A 50.5 A 10.5 A apart
PV input
Max PV power 50.00 kW 50.00 kW Same
DC/AC ratio 1.50 1.50 Same
Max DC voltage 1000 V 1000 V Same
MPPT voltage range 680-1000 V 150-870 V 680-1000 V vs 150-870 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 40.0 A 28.0 A +12.0 A for SolarEdge SE33.3K (K33.3SE) - Three Phase Inverter for 277/480V Grid
Efficiency
European efficiency 98.0 % 97.8 % +0.2 pp for SolarEdge SE33.3K (K33.3SE) - Three Phase Inverter for 277/480V Grid
Max efficiency 98.1 % 98.0 % Effectively the same
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 45.0 kg 41.8 kg -3.2 kg for Fronius Verto 33.3
Weight per kW 1.4 kg/kW 1.3 kg/kW Effectively the same
Dimensions 540x315x260 mm 865x574x279 mm 540x315x260 mm vs 865x574x279 mm
Ingress protection IP65 IP66 IP65 vs IP66
Cooling forced-air forced-air Same
Noise 55 dB 56 dB Effectively the same
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 20 yrs - Not published by Fronius International
03

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SolarEdge SE33.3K (K33.3SE) - Three Phase Inverter for 277/480V Grid vs SolarEdge SE33.3K (K33.3SE) with DC Safety Unit (optional)
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SolarEdge
SolarEdge SE33.3K (K33.3SE) - Three Phase Inverter for 277/480V Grid vs SolarEdge SE33.3KUS (KUS33.3SE)
3 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.