---
title: "Growatt WIT 55K-A-US L2 / WIT 55K-AU-US L2 vs Growatt WT 55K-H-US L2 / WT 55K-HU-US L2 - Inverter Comparison | ComparePV"
description: "Compare Growatt WIT 55K-A-US L2 / WIT 55K-AU-US L2 vs Growatt WT 55K-H-US L2 / WT 55K-HU-US L2 side by side: what actually differs, efficiency, MPP trackers, battery input and the full specification."
source: "https://comparepv.com/compare-inverters/growatt-wit-55k-a-us-l2-wit-55k-au-us-l2/growatt-wt-55k-h-us-l2-wt-55k-hu-us-l2"
updated: 2026-01-16
---

# Growatt WIT 55K-A-US L2 / WIT 55K-AU-US L2 vs Growatt WT 55K-H-US L2 / WT 55K-HU-US L2

WIT 55K-A-US L2 / WIT 55K-AU-US L2 leads on the differences that matter

The largest is max ac power: 5.50 kW apart. 6 of 12 comparable parameters are identical, with 20 more left out because at least one datasheet does not publish them.


## The two inverters


| Attribute | A | B |
| --- | --- | --- |
| Inverter | [Growatt WIT 55K-A-US L2 / WIT 55K-AU-US L2](https://comparepv.com/inverter/growatt-wit-55k-a-us-l2-wit-55k-au-us-l2) | [Growatt WT 55K-H-US L2 / WT 55K-HU-US L2](https://comparepv.com/inverter/growatt-wt-55k-h-us-l2-wt-55k-hu-us-l2) |
| Manufacturer | Growatt | Growatt |
| Rated AC power | 55 kW | 55 kW |
| Type | Hybrid | Hybrid |


## Where they differ

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


| Parameter | WIT 55K-A-US L2 / WIT 55K-AU-US L2 | WT 55K-H-US L2 / WT 55K-HU-US L2 | Difference |
| --- | --- | --- | --- |
| Max AC power | 60.50 kW | 55.00 kW | 5.50 kW apart |
| Weight | 120.0 kg | 140.0 kg | -20.0 kg for WIT 55K-A-US L2 / WIT 55K-AU-US L2 |
| Weight per kW | 2.2 kg/kW | 2.5 kg/kW | -0.4 kg/kW for WIT 55K-A-US L2 / WIT 55K-AU-US L2 |
| Ingress protection | IP66/NEMA 4X | IP66 | IP66/NEMA 4X vs IP66 |
| Battery voltage | 380~450V | 380-650V | 380~450V vs 380-650V |
| Dimensions | 820x1350x501 mm | 1350x820x501 mm | 820x1350x501 mm vs 1350x820x501 mm |


## Every compared parameter


| Parameter | WIT 55K-A-US L2 / WIT 55K-AU-US L2 | WT 55K-H-US L2 / WT 55K-HU-US L2 |
| --- | --- | --- |
| Rated AC power | 55.00 kW | 55.00 kW |
| Max AC power | 60.50 kW | 55.00 kW |
| Grid connection | 3-phase | 3-phase |
| Nominal AC voltage | - | 208 V |
| Max AC current | 168.1 A | 168.1 A |
| Max PV power | - | 108.00 kW |
| DC/AC ratio | - | 1.96 |
| Max DC voltage | - | 800 V |
| MPPT voltage range | - | 180-600 V |
| Start voltage | - | 195 V |
| MPP trackers | - | 2 |
| Strings per tracker | - | - |
| Max input current per tracker | - | 32.0 A |
| European efficiency | - | - |
| Max efficiency | 98.0 % | 98.0 % |
| CEC efficiency | - | - |
| Battery input | Yes | Yes |
| Battery voltage | 380~450V | 380-650V |
| Max charge current | - | - |
| Backup power | - | - |
| Weight | 120.0 kg | 140.0 kg |
| Weight per kW | 2.2 kg/kW | 2.5 kg/kW |
| Dimensions | 820x1350x501 mm | 1350x820x501 mm |
| Ingress protection | IP66/NEMA 4X | IP66 |
| Cooling | - | forced-air |
| Noise | - | - |
| Max operating temperature | 60 °C | 60 °C |
| Wi-Fi | - | - |
| Ethernet | - | - |
| Arc fault protection | - | - |
| Integrated DC switch | - | - |
| Warranty | - | - |


## Related comparisons

- [Growatt WIT 55K-A-US L2 / WIT 55K-AU-US L2 vs GoodWe GW50K-ET-10](https://comparepv.com/compare-inverters/growatt-wit-55k-a-us-l2-wit-55k-au-us-l2/goodwe-gw50k-et-10) - 8 differences, the largest is rated ac power
- [Growatt WIT 55K-A-US L2 / WIT 55K-AU-US L2 vs Ginlong Solis S6-EH3P50K-H](https://comparepv.com/compare-inverters/growatt-wit-55k-a-us-l2-wit-55k-au-us-l2/ginlong-solis-s6-eh3p50k-h) - 9 differences, the largest is rated ac power
- [Growatt WIT 55K-A-US L2 / WIT 55K-AU-US L2 vs Ginlong Solis S6-EH3P60K-H(21A)](https://comparepv.com/compare-inverters/growatt-wit-55k-a-us-l2-wit-55k-au-us-l2/ginlong-solis-s6-eh3p60k-h-21a) - 9 differences, the largest is rated ac power


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Source: https://comparepv.com/compare-inverters/growatt-wit-55k-a-us-l2-wit-55k-au-us-l2/growatt-wt-55k-h-us-l2-wt-55k-hu-us-l2

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