Skip to main content
SG40CX vs SUN2000-40KTL-M3 12 of 19 identical Swap Change inverters

Sungrow SG40CX vs Huawei SUN2000-40KTL-M3

Sungrow SG40CX
Sungrow
SG40CX
40 kW 98.3 % euro Grid-tie
Open inverter page Datasheet PDF
VS
Huawei SUN2000-40KTL-M3
Huawei
SUN2000-40KTL-M3
40 kW 98.4 % euro Grid-tie
Open inverter page Datasheet PDF
The verdict

SUN2000-40KTL-M3 leads on the differences that matter

The largest is max ac power: 4.00 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 SG40CX SUN2000-40KTL-M3 Difference
Max AC power 44.00 kW 40.00 kW 4.00 kW apart
Weight 58.0 kg 43.0 kg 15.0 kg lighter
Max AC current 66.9 A 63.8 A 3.1 A apart
Start voltage 250 V 200 V 50 V earlier start
Weight per kW 1.4 kg/kW 1.1 kg/kW 0.4 kg/kW lighter
Dimensions 645x782x310 mm 530x640x270 mm 645x782x310 mm vs 530x640x270 mm
Cooling forced-air natural forced-air vs natural
02

Full specification

Parameter SG40CX SUN2000-40KTL-M3 Difference
AC output
Rated AC power 40.00 kW 40.00 kW Same
Max AC power 44.00 kW 40.00 kW 4.00 kW apart
Grid connection 3-phase 3-phase Same
Nominal AC voltage 400 V 400 V Same
Max AC current 66.9 A 63.8 A 3.1 A apart
PV input
Max PV power - - Neither datasheet publishes this
DC/AC ratio - - Neither datasheet publishes this
Max DC voltage 1100 V 1100 V Same
MPPT voltage range 200-1000 V 200-1000 V Same
Start voltage 250 V 200 V -50 V for SUN2000-40KTL-M3
MPP trackers - 4 Not published by Sungrow
Strings per tracker 2 2 Same
Max input current per tracker 26.0 A 26.0 A Same
Efficiency
European efficiency 98.3 % 98.4 % Effectively the same
Max efficiency 98.6 % 98.7 % 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 58.0 kg 43.0 kg -15.0 kg for SUN2000-40KTL-M3
Weight per kW 1.4 kg/kW 1.1 kg/kW -0.4 kg/kW for SUN2000-40KTL-M3
Dimensions 645x782x310 mm 530x640x270 mm 645x782x310 mm vs 530x640x270 mm
Ingress protection IP66 IP66 Same
Cooling forced-air natural forced-air vs natural
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 - - Neither datasheet publishes this
03

More useful comparisons

Open all inverters
Same type, similar size
Growatt
Sungrow SG40CX vs Growatt MID 40KTL3-X
5 differences, the largest is weight
Same type, similar size
Ginlong Solis
Sungrow SG40CX vs Solis-40K
5 differences, the largest is weight
Same type, similar size
Sungrow
Sungrow SG40CX vs Sungrow SG40CX-P2
6 differences, the largest is max input current per tracker
04

Written summary

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