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WIT 40K-A-US L2 / WIT 40K-AU-US L2 vs MID 40K-HU 4 of 12 identical Swap Change inverters

Growatt WIT 40K-A-US L2 / WIT 40K-AU-US L2 vs Growatt MID 40K-HU

Growatt WIT 40K-A-US L2 / WIT 40K-AU-US L2
Growatt
WIT 40K-A-US L2 / WIT 40K-AU-US L2
40 kW Hybrid
Open inverter page Datasheet PDF
VS
Growatt MID 40K-HU
Growatt
MID 40K-HU
40 kW 97.2 % euro Hybrid
Open inverter page Datasheet PDF
The verdict

MID 40K-HU leads on the differences that matter

The largest is max efficiency: 0.6 pp more efficient. 4 of 12 comparable parameters are identical, with 20 more left out because at least one datasheet does not publish them.

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

What actually differs

8 of 12 parameters
Parameter WIT 40K-A-US L2 / WIT 40K-AU-US L2 MID 40K-HU Difference
Max efficiency 98.0 % 98.6 % 0.6 pp more efficient
Max AC power 44.00 kW 40.00 kW 4.00 kW apart
Weight 120.0 kg 48.0 kg 72.0 kg lighter
Weight per kW 3.0 kg/kW 1.2 kg/kW 1.8 kg/kW lighter
Max AC current 122.2 A 66.7 A 55.5 A apart
Ingress protection IP66/NEMA 4X IP66 IP66/NEMA 4X vs IP66
Battery voltage 380~450V 600-980 V 380~450V vs 600-980 V
Dimensions 820x1350x501 mm 570x680x256 mm 820x1350x501 mm vs 570x680x256 mm
02

Full specification

Parameter WIT 40K-A-US L2 / WIT 40K-AU-US L2 MID 40K-HU 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 Not published by Growatt
Max AC current 122.2 A 66.7 A 55.5 A apart
PV input
Max PV power - 80.00 kW Not published by Growatt
DC/AC ratio - 2.00 Not published by Growatt
Max DC voltage - 1000 V Not published by Growatt
MPPT voltage range - 200-1000 V Not published by Growatt
Start voltage - 160 V Not published by Growatt
MPP trackers - - Neither datasheet publishes this
Strings per tracker - 2 Not published by Growatt
Max input current per tracker - 40.0 A Not published by Growatt
Efficiency
European efficiency - 97.2 % Not published by Growatt
Max efficiency 98.0 % 98.6 % +0.6 pp for MID 40K-HU
CEC efficiency - - Neither datasheet publishes this
Battery
Battery input Yes Yes Same
Battery voltage 380~450V 600-980 V 380~450V vs 600-980 V
Max charge current - 42 A Not published by Growatt
Backup power - 30.0 kW Not published by Growatt
Physical
Weight 120.0 kg 48.0 kg -72.0 kg for MID 40K-HU
Weight per kW 3.0 kg/kW 1.2 kg/kW -1.8 kg/kW for MID 40K-HU
Dimensions 820x1350x501 mm 570x680x256 mm 820x1350x501 mm vs 570x680x256 mm
Ingress protection IP66/NEMA 4X IP66 IP66/NEMA 4X vs IP66
Cooling - forced-air Not published by Growatt
Noise - 55 dB Not published by Growatt
Max operating temperature 60 °C 60 °C Same
Connectivity and safety
Wi-Fi - Yes Not published by Growatt
Ethernet - - Neither datasheet publishes this
Arc fault protection - Yes Not published by Growatt
Integrated DC switch - Yes Not published by Growatt
Warranty
Warranty - 5 yrs Not published by Growatt
03

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Growatt MID 40K-HU vs Growatt WT 40K-H-US L2 / WT 40K-HU-US L2
13 differences, the largest is max dc voltage
04

Written summary

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