---
title: "Fronius Symo 17.5-3 480 vs SolarEdge SE17.3KUS - Inverter Comparison | ComparePV"
description: "Compare Fronius Symo 17.5-3 480 vs SolarEdge SE17.3KUS side by side: what actually differs, efficiency, MPP trackers, battery input and the full specification."
source: "https://comparepv.com/compare-inverters/fronius-international-fronius-symo-17-5-3-480/solaredge-se17-3kus"
updated: 2026-01-16
---

# Fronius Symo 17.5-3 480 vs SolarEdge SE17.3KUS

SE17.3KUS leads on the differences that matter

The largest is rated ac power: 0.20 kW apart. 8 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 | [Fronius Symo 17.5-3 480](https://comparepv.com/inverter/fronius-international-fronius-symo-17-5-3-480) | [SolarEdge SE17.3KUS](https://comparepv.com/inverter/solaredge-se17-3kus) |
| Manufacturer | Fronius International | SolarEdge |
| Rated AC power | 17.495 kW | 17.3 kW |
| Type | Grid-tie | Grid-tie |


## Where they differ

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


| Parameter | Fronius Symo 17.5-3 480 | SE17.3KUS | Difference |
| --- | --- | --- | --- |
| Rated AC power | 17.50 kW | 17.30 kW | 0.20 kW apart |
| Max DC voltage | 1000 V | 600 V | 400 V apart |
| Weight | 43.4 kg | 35.5 kg | -7.9 kg for SE17.3KUS |
| Max AC power | 17.50 kW | 17.30 kW | 0.20 kW apart |
| Weight per kW | 2.5 kg/kW | 2.1 kg/kW | -0.4 kg/kW for SE17.3KUS |
| Max AC current | 21.0 A | 48.2 A | 27.2 A apart |
| Ingress protection | NEMA 4X | NEMA 3R | NEMA 4X vs NEMA 3R |
| Dimensions | 724x511x226 mm | 808x317x300 mm | 724x511x226 mm vs 808x317x300 mm |


## Every compared parameter


| Parameter | Fronius Symo 17.5-3 480 | SE17.3KUS |
| --- | --- | --- |
| Rated AC power | 17.50 kW | 17.30 kW |
| Max AC power | 17.50 kW | 17.30 kW |
| Grid connection | 3-phase | 3-phase |
| Nominal AC voltage | - | 208 V |
| Max AC current | 21.0 A | 48.2 A |
| Max PV power | - | 30.27 kW |
| DC/AC ratio | - | 1.75 |
| Max DC voltage | 1000 V | 600 V |
| MPPT voltage range | - | 370-600 V |
| Start voltage | 200 V | - |
| MPP trackers | - | - |
| Strings per tracker | - | - |
| Max input current per tracker | - | - |
| European efficiency | - | - |
| Max efficiency | 98.0 % | - |
| CEC efficiency | 97.5 % | 97.5 % |
| Battery input | - | - |
| Battery voltage | - | - |
| Max charge current | - | - |
| Backup power | - | - |
| Weight | 43.4 kg | 35.5 kg |
| Weight per kW | 2.5 kg/kW | 2.1 kg/kW |
| Dimensions | 724x511x226 mm | 808x317x300 mm |
| Ingress protection | NEMA 4X | NEMA 3R |
| Cooling | forced-air | forced-air |
| Noise | - | 62 dB |
| Max operating temperature | 60 °C | 60 °C |
| Wi-Fi | Yes | Yes |
| Ethernet | Yes | Yes |
| Arc fault protection | Yes | Yes |
| Integrated DC switch | Yes | Yes |
| Warranty | 10 yrs | - |


## Related comparisons

- [Fronius Symo 17.5-3 480 vs Fronius Verto 17.5](https://comparepv.com/compare-inverters/fronius-international-fronius-symo-17-5-3-480/fronius-international-fronius-verto-17-5) - 7 differences, the largest is max efficiency
- [Fronius Symo 17.5-3 480 vs Fronius International Symo Advanced 17.5-3-M](https://comparepv.com/compare-inverters/fronius-international-fronius-symo-17-5-3-480/fronius-international-symo-advanced-17-5-3-m) - 4 differences, the largest is weight
- [Fronius Symo 17.5-3 480 vs Growatt MID 17KTL3-X](https://comparepv.com/compare-inverters/fronius-international-fronius-symo-17-5-3-480/growatt-mid-17ktl3-x) - 11 differences, the largest is rated ac power


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Source: https://comparepv.com/compare-inverters/fronius-international-fronius-symo-17-5-3-480/solaredge-se17-3kus

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