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SolarEdge SE33.3K (K33.3SE) with DC Safety Unit (optional) vs SE33.3K 12 of 19 identical Swap Change inverters

SolarEdge SE33.3K (K33.3SE) with DC Safety Unit (optional) vs SolarEdge SE33.3K

SolarEdge
SolarEdge SE33.3K (K33.3SE) with DC Safety Unit (optional)
33.3 kW 98.0 % 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. 12 of 19 comparable parameters are identical, with 13 more left out because at least one datasheet does not publish them.

See all 7 differences
How alike are they
12 of 19 comparable
parameters are identical
identical differs not published
01

What actually differs

7 of 19 parameters
Parameter SolarEdge SE33.3K (K33.3SE) with DC Safety Unit (optional) 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 48.0 kg 32.0 kg 16.0 kg lighter
Weight per kW 1.4 kg/kW 1.0 kg/kW 0.5 kg/kW lighter
Nominal AC voltage 480 V 400 V 80 V apart
Max AC current 40.0 A 48.2 A 8.2 A apart
Dimensions 775x315x260 mm 558x328x273 mm 775x315x260 mm vs 558x328x273 mm
02

Full specification

Parameter SolarEdge SE33.3K (K33.3SE) with DC Safety Unit (optional) 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 480 V 400 V 80 V apart
Max AC current 40.0 A 48.2 A 8.2 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 680-1000 V 680-1000 V Same
Start voltage - - Neither datasheet publishes this
MPP trackers - - Neither datasheet publishes this
Strings per tracker - - Neither datasheet publishes this
Max input current per tracker 40.0 A - Not published by SolarEdge
Efficiency
European efficiency 98.0 % 98.0 % Same
Max efficiency 98.1 % - 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 48.0 kg 32.0 kg -16.0 kg for SE33.3K
Weight per kW 1.4 kg/kW 1.0 kg/kW -0.5 kg/kW for SE33.3K
Dimensions 775x315x260 mm 558x328x273 mm 775x315x260 mm vs 558x328x273 mm
Ingress protection IP65 IP65 Same
Cooling forced-air forced-air Same
Noise 55 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 20 yrs - Not published by SolarEdge
03

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SolarEdge SE33.3K (K33.3SE) with DC Safety Unit (optional) vs Fronius Verto 33.3
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5 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.