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SG333HX vs MAX 333K-X 12 of 20 identical Swap Change inverters

Sungrow SG333HX vs Growatt MAX 333K-X

Sungrow SG333HX
Sungrow
SG333HX
333 kW 98.8 % euro Grid-tie
Open inverter page Datasheet PDF
VS
Growatt MAX 333K-X
Growatt
MAX 333K-X
333 kW 98.5 % euro Grid-tie
Open inverter page Datasheet PDF
The verdict

SG333HX leads on the differences that matter

The largest is mpp trackers: 6 trackers more. 12 of 20 comparable parameters are identical, with 12 more left out because at least one datasheet does not publish them.

See all 8 differences
How alike are they
12 of 20 comparable
parameters are identical
identical differs not published
01

What actually differs

8 of 20 parameters
Parameter SG333HX MAX 333K-X Difference
MPP trackers 12 6 6 trackers more
Max input current per tracker 40.0 A 80.0 A 40.0 A more headroom
Max AC power 333.00 kW 366.30 kW 33.30 kW apart
Weight 116.0 kg 126.0 kg 10.0 kg lighter
European efficiency 98.8 % 98.5 % 0.3 pp more efficient
Start voltage 550 V 500 V 50 V earlier start
Strings per tracker 2 5 3 strings apart
Dimensions 870x1136x361 mm 790x1145x371 mm 870x1136x361 mm vs 790x1145x371 mm
02

Full specification

Parameter SG333HX MAX 333K-X Difference
AC output
Rated AC power 333.00 kW 333.00 kW Same
Max AC power 333.00 kW 366.30 kW 33.30 kW apart
Grid connection 3-phase 3-phase Same
Nominal AC voltage 800 V 800 V Same
Max AC current 240.5 A 240.3 A Effectively the same
PV input
Max PV power - 499.50 kW Not published by Sungrow
DC/AC ratio - 1.50 Not published by Sungrow
Max DC voltage 1500 V 1500 V Same
MPPT voltage range 500-1500 V 500-1500 V Same
Start voltage 550 V 500 V -50 V for MAX 333K-X
MPP trackers 12 6 +6 trackers for SG333HX
Strings per tracker 2 5 3 strings apart
Max input current per tracker 40.0 A 80.0 A +40.0 A for MAX 333K-X
Efficiency
European efficiency 98.8 % 98.5 % +0.3 pp for SG333HX
Max efficiency 99.0 % 99.0 % 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 116.0 kg 126.0 kg -10.0 kg for SG333HX
Weight per kW 0.3 kg/kW 0.4 kg/kW Effectively the same
Dimensions 870x1136x361 mm 790x1145x371 mm 870x1136x361 mm vs 790x1145x371 mm
Ingress protection IP66 IP66 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 Not published by Sungrow
Ethernet - - Neither datasheet publishes this
Arc fault protection - Yes Not published by Sungrow
Integrated DC switch Yes Yes Same
Warranty
Warranty - 5 yrs Not published by Sungrow
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.