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

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

A-US / WIT 75K-AU-US leads on the differences that matter

The largest is max ac power: 7.50 kW apart. 7 of 15 comparable parameters are identical, with 17 more left out because at least one datasheet does not publish them.


## The two inverters


| Attribute | A | B |
| --- | --- | --- |
| Inverter | [Growatt WIT 75K-A-US / WIT 75K-AU-US](https://comparepv.com/inverter/growatt-wit-75k-a-us-wit-75k-au-us) | [Growatt WIT 75K-H / WIT 75K-HU](https://comparepv.com/inverter/growatt-wit-75k-h-wit-75k-hu) |
| 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 | A-US / WIT 75K-AU-US | H / WIT 75K-HU | Difference |
| --- | --- | --- | --- |
| Max AC power | 75.00 kW | 82.50 kW | 7.50 kW apart |
| Weight | 120.0 kg | 140.0 kg | -20.0 kg for A-US / WIT 75K-AU-US |
| Nominal AC voltage | 480 V | 400 V | 80 V apart |
| Max AC current | 99.3 A | 125.0 A | 25.7 A apart |
| Ingress protection | NEMA/IP66 | IP65 | NEMA/IP66 vs IP65 |
| Weight per kW | 1.6 kg/kW | 1.9 kg/kW | -0.3 kg/kW for A-US / WIT 75K-AU-US |
| Battery voltage | 750-1000 V | 600~1000V (for 3P3W) / 680~1000V (for 3P4W) | 750-1000 V vs 600~1000V (for 3P3W) / 680~1000V (for 3P4W) |
| Dimensions | 1200x820x510 mm | 1350x820x510 mm | 1200x820x510 mm vs 1350x820x510 mm |


## Every compared parameter


| Parameter | A-US / WIT 75K-AU-US | H / WIT 75K-HU |
| --- | --- | --- |
| Rated AC power | 75.00 kW | 75.00 kW |
| Max AC power | 75.00 kW | 82.50 kW |
| Grid connection | 3-phase | 3-phase |
| Nominal AC voltage | 480 V | 400 V |
| Max AC current | 99.3 A | 125.0 A |
| Max PV power | - | 156.00 kW |
| DC/AC ratio | - | 2.08 |
| Max DC voltage | - | 1100 V |
| MPPT voltage range | - | 180-800 V |
| Start voltage | - | 195 V |
| MPP trackers | - | - |
| 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 | 750-1000 V | 600~1000V (for 3P3W) / 680~1000V (for 3P4W) |
| Max charge current | - | - |
| Backup power | - | - |
| Weight | 120.0 kg | 140.0 kg |
| Weight per kW | 1.6 kg/kW | 1.9 kg/kW |
| Dimensions | 1200x820x510 mm | 1350x820x510 mm |
| Ingress protection | NEMA/IP66 | IP65 |
| 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 | 5 yrs | 5 yrs |


## Related comparisons

- [Growatt WIT 75K-A-US / WIT 75K-AU-US vs Growatt WIT 75K-AU-US](https://comparepv.com/compare-inverters/growatt-wit-75k-a-us-wit-75k-au-us/growatt-wit-75k-au-us) - 7 differences, the largest is warranty
- [Growatt WIT 75K-A-US / WIT 75K-AU-US vs Growatt WIT 75K-H-US / WIT 75K-HU-US](https://comparepv.com/compare-inverters/growatt-wit-75k-a-us-wit-75k-au-us/growatt-wit-75k-h-us-wit-75k-hu-us) - 6 differences, the largest is warranty
- [Growatt WIT 75K-A-US / WIT 75K-AU-US vs Growatt WIT 75K-A](https://comparepv.com/compare-inverters/growatt-wit-75k-a-us-wit-75k-au-us/growatt-wit-75k-a) - 5 differences, the largest is nominal ac voltage


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

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