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

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

Growatt MID 40K-HU
Growatt
MID 40K-HU
40 kW 97.2 % euro Hybrid
Open inverter page Datasheet PDF
VS
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
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 MID 40K-HU WIT 40K-A-US L2 / WIT 40K-AU-US L2 Difference
Max efficiency 98.6 % 98.0 % 0.6 pp more efficient
Max AC power 40.00 kW 44.00 kW 4.00 kW apart
Weight 48.0 kg 120.0 kg 72.0 kg lighter
Weight per kW 1.2 kg/kW 3.0 kg/kW 1.8 kg/kW lighter
Max AC current 66.7 A 122.2 A 55.5 A apart
Ingress protection IP66 IP66/NEMA 4X IP66 vs IP66/NEMA 4X
Battery voltage 600-980 V 380~450V 600-980 V vs 380~450V
Dimensions 570x680x256 mm 820x1350x501 mm 570x680x256 mm vs 820x1350x501 mm
02

Full specification

Parameter MID 40K-HU WIT 40K-A-US L2 / WIT 40K-AU-US L2 Difference
AC output
Rated AC power 40.00 kW 40.00 kW Same
Max AC power 40.00 kW 44.00 kW 4.00 kW apart
Grid connection 3-phase 3-phase Same
Nominal AC voltage 400 V - Not published by Growatt
Max AC current 66.7 A 122.2 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 98.6 % 98.0 % +0.6 pp for MID 40K-HU
CEC efficiency - - Neither datasheet publishes this
Battery
Battery input Yes Yes Same
Battery voltage 600-980 V 380~450V 600-980 V vs 380~450V
Max charge current 42 A - Not published by Growatt
Backup power 30.0 kW - Not published by Growatt
Physical
Weight 48.0 kg 120.0 kg -72.0 kg for MID 40K-HU
Weight per kW 1.2 kg/kW 3.0 kg/kW -1.8 kg/kW for MID 40K-HU
Dimensions 570x680x256 mm 820x1350x501 mm 570x680x256 mm vs 820x1350x501 mm
Ingress protection IP66 IP66/NEMA 4X IP66 vs IP66/NEMA 4X
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

More useful comparisons

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Growatt MID 40K-HU vs Ginlong Solis S6-EH3P40K-H
10 differences, the largest is max efficiency
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Deye
Growatt MID 40K-HU vs Deye SUN-40K-SG01HP3-EU-BM4
15 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.