---
title: "Fronius Verto 33.3 vs SolarEdge SE33.3K - Inverter Comparison | ComparePV"
description: "Compare Fronius Verto 33.3 vs SolarEdge SE33.3K side by side: what actually differs, efficiency, MPP trackers, battery input and the full specification."
source: "https://comparepv.com/compare-inverters/fronius-international-fronius-verto-33-3/solaredge-se33-3k"
updated: 2026-01-16
---

# Fronius Verto 33.3 vs SolarEdge SE33.3K

SE33.3K leads on the differences that matter

The largest is max pv power: 8.27 kW apart. 10 of 19 comparable parameters are identical, with 13 more left out because at least one datasheet does not publish them.


## The two inverters


| Attribute | A | B |
| --- | --- | --- |
| Inverter | [Fronius Verto 33.3](https://comparepv.com/inverter/fronius-international-fronius-verto-33-3) | [SolarEdge SE33.3K](https://comparepv.com/inverter/solaredge-se33-3k) |
| Manufacturer | Fronius International | SolarEdge |
| Rated AC power | 33.3 kW | 33.3 kW |
| Type | Grid-tie | Grid-tie |


## Where they differ

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


| Parameter | Fronius Verto 33.3 | SE33.3K | Difference |
| --- | --- | --- | --- |
| Max PV power | 50.00 kW | 58.27 kW | 8.27 kW apart |
| DC/AC ratio | 1.50 | 1.75 | +0.25 for SE33.3K |
| Weight | 41.8 kg | 32.0 kg | -9.8 kg for SE33.3K |
| European efficiency | 97.8 % | 98.0 % | +0.2 pp for SE33.3K |
| Max AC current | 50.5 A | 48.2 A | 2.2 A apart |
| Ingress protection | IP66 | IP65 | IP66 vs IP65 |
| Weight per kW | 1.3 kg/kW | 1.0 kg/kW | -0.3 kg/kW for SE33.3K |
| MPPT voltage range | 150-870 V | 680-1000 V | 150-870 V vs 680-1000 V |
| Dimensions | 865x574x279 mm | 558x328x273 mm | 865x574x279 mm vs 558x328x273 mm |


## Every compared parameter


| Parameter | Fronius Verto 33.3 | SE33.3K |
| --- | --- | --- |
| Rated AC power | 33.30 kW | 33.30 kW |
| Max AC power | 33.30 kW | 33.30 kW |
| Grid connection | 3-phase | 3-phase |
| Nominal AC voltage | 400 V | 400 V |
| Max AC current | 50.5 A | 48.2 A |
| Max PV power | 50.00 kW | 58.27 kW |
| DC/AC ratio | 1.50 | 1.75 |
| Max DC voltage | 1000 V | 1000 V |
| MPPT voltage range | 150-870 V | 680-1000 V |
| Start voltage | 150 V | - |
| MPP trackers | 4 | - |
| Strings per tracker | 2 | - |
| Max input current per tracker | 28.0 A | - |
| European efficiency | 97.8 % | 98.0 % |
| Max efficiency | 98.0 % | - |
| CEC efficiency | - | - |
| Battery input | - | - |
| Battery voltage | - | - |
| Max charge current | - | - |
| Backup power | - | - |
| Weight | 41.8 kg | 32.0 kg |
| Weight per kW | 1.3 kg/kW | 1.0 kg/kW |
| Dimensions | 865x574x279 mm | 558x328x273 mm |
| Ingress protection | IP66 | IP65 |
| Cooling | forced-air | forced-air |
| Noise | 56 dB | - |
| Max operating temperature | 60 °C | 60 °C |
| Wi-Fi | Yes | Yes |
| Ethernet | Yes | Yes |
| Arc fault protection | Yes | Yes |
| Integrated DC switch | Yes | - |
| Warranty | - | - |


## Related comparisons

- [Fronius Verto 33.3 vs SolarEdge SE33.3K (K33.3SE) - Three Phase Inverter for 277/480V Grid](https://comparepv.com/compare-inverters/fronius-international-fronius-verto-33-3/solaredge-solaredge-se33-3k-k33-3se-three-phase-inverter-for-277-480v-grid) - 8 differences, the largest is max input current per tracker
- [Fronius Verto 33.3 vs SolarEdge SE33.3K (K33.3SE) with DC Safety Unit (optional)](https://comparepv.com/compare-inverters/fronius-international-fronius-verto-33-3/solaredge-solaredge-se33-3k-k33-3se-with-dc-safety-unit-optional) - 8 differences, the largest is max input current per tracker
- [Fronius Verto 33.3 vs SolarEdge SE33.3KUS (KUS33.3SE)](https://comparepv.com/compare-inverters/fronius-international-fronius-verto-33-3/solaredge-se33-3kus-kus33-3se) - 7 differences, the largest is max pv power


---

Source: https://comparepv.com/compare-inverters/fronius-international-fronius-verto-33-3/solaredge-se33-3k

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