---
title: "Growatt WIT 75K-AU vs Growatt WIT 75K-H-US / WIT 75K-HU-US - Inverter Comparison | ComparePV"
description: "Compare Growatt WIT 75K-AU vs Growatt WIT 75K-H-US / WIT 75K-HU-US side by side: what actually differs, efficiency, MPP trackers, battery input and the full specification."
source: "https://comparepv.com/compare-inverters/growatt-wit-75k-au/growatt-wit-75k-h-us-wit-75k-hu-us"
updated: 2026-01-16
---

# Growatt WIT 75K-AU vs Growatt WIT 75K-H-US / WIT 75K-HU-US

WIT 75K-H-US / WIT 75K-HU-US leads on the differences that matter

The largest is max dc voltage: 100 V apart. 7 of 16 comparable parameters are identical, with 16 more left out because at least one datasheet does not publish them.


## The two inverters


| Attribute | A | B |
| --- | --- | --- |
| Inverter | [Growatt WIT 75K-AU](https://comparepv.com/inverter/growatt-wit-75k-au) | [Growatt WIT 75K-H-US / WIT 75K-HU-US](https://comparepv.com/inverter/growatt-wit-75k-h-us-wit-75k-hu-us) |
| Manufacturer | Growatt | Growatt |
| Rated AC power | 75 kW | 75 kW |
| Type | Hybrid | Hybrid |


## Where they differ

Ranked by how much the difference matters, not by datasheet order.


| Parameter | WIT 75K-AU | WIT 75K-H-US / WIT 75K-HU-US | Difference |
| --- | --- | --- | --- |
| Max DC voltage | 1000 V | 1100 V | 100 V apart |
| Weight | 120.0 kg | 60.0 kg | -60.0 kg for WIT 75K-H-US / WIT 75K-HU-US |
| Weight per kW | 1.6 kg/kW | 0.8 kg/kW | -0.8 kg/kW for WIT 75K-H-US / WIT 75K-HU-US |
| Nominal AC voltage | 400 V | 480 V | 80 V apart |
| Max AC current | 125.3 A | 99.3 A | 26.0 A apart |
| Start voltage | 768 V | 195 V | -573 V for WIT 75K-H-US / WIT 75K-HU-US |
| Ingress protection | IP66 | NEMA 4X (IP66) | IP66 vs NEMA 4X (IP66) |
| Battery voltage | 600-1000V (for 3P3W); 680-1000V (for 3P4W); recovery start: 768V | 750-1000V | 600-1000V (for 3P3W); 680-1000V (for 3P4W); recovery start: 768V vs 750-1000V |
| Dimensions | 1350x820x510 mm | 820x760x228 mm | 1350x820x510 mm vs 820x760x228 mm |


## Every compared parameter


| Parameter | WIT 75K-AU | WIT 75K-H-US / WIT 75K-HU-US |
| --- | --- | --- |
| Rated AC power | 75.00 kW | 75.00 kW |
| Max AC power | 75.00 kW | 75.00 kW |
| Grid connection | 3-phase | 3-phase |
| Nominal AC voltage | 400 V | 480 V |
| Max AC current | 125.3 A | 99.3 A |
| Max PV power | - | 156.60 kW |
| DC/AC ratio | - | 2.09 |
| Max DC voltage | 1000 V | 1100 V |
| MPPT voltage range | - | 180-800 V |
| Start voltage | 768 V | 195 V |
| MPP trackers | - | 10 |
| Strings per tracker | - | 2 |
| Max input current per tracker | - | 32.0 A |
| European efficiency | - | - |
| Max efficiency | - | 98.0 % |
| CEC efficiency | - | - |
| Battery input | Yes | Yes |
| Battery voltage | 600-1000V (for 3P3W); 680-1000V (for 3P4W); recovery start: 768V | 750-1000V |
| Max charge current | - | 151 A |
| Backup power | - | 100.0 kW |
| Weight | 120.0 kg | 60.0 kg |
| Weight per kW | 1.6 kg/kW | 0.8 kg/kW |
| Dimensions | 1350x820x510 mm | 820x760x228 mm |
| Ingress protection | IP66 | NEMA 4X (IP66) |
| Cooling | forced-air | forced-air |
| Noise | - | - |
| Max operating temperature | 60 °C | 60 °C |
| Wi-Fi | Yes | Yes |
| Ethernet | - | - |
| Arc fault protection | - | Yes |
| Integrated DC switch | - | - |
| Warranty | - | 10 yrs |


## Related comparisons

- [Growatt WIT 75K-AU vs Growatt WIT 75K-A-US / WIT 75K-AU-US](https://comparepv.com/compare-inverters/growatt-wit-75k-au/growatt-wit-75k-a-us-wit-75k-au-us) - 5 differences, the largest is nominal ac voltage
- [Growatt WIT 75K-AU vs Growatt WIT 75K-AU-US](https://comparepv.com/compare-inverters/growatt-wit-75k-au/growatt-wit-75k-au-us) - 8 differences, the largest is max ac power
- [Growatt WIT 75K-AU vs Growatt WIT 75K-A](https://comparepv.com/compare-inverters/growatt-wit-75k-au/growatt-wit-75k-a) - The same specification on paper


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Source: https://comparepv.com/compare-inverters/growatt-wit-75k-au/growatt-wit-75k-h-us-wit-75k-hu-us

Not in this file, on the page: a written summary generated on request.