---
title: "Fronius Symo 12.5-3 480 vs SolarEdge SE12.5K (Three Phase) - Inverter Comparison | ComparePV"
description: "Compare Fronius Symo 12.5-3 480 vs SolarEdge SE12.5K (Three Phase) 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-12-5-3-480/solaredge-solaredge-se12-5k-three-phase"
updated: 2026-01-16
---

# Fronius Symo 12.5-3 480 vs SolarEdge SE12.5K (Three Phase)

SolarEdge SE12.5K (Three Phase) leads on the differences that matter

The largest is weight: 2.3 kg lighter. 11 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 | [Fronius Symo 12.5-3 480](https://comparepv.com/inverter/fronius-international-fronius-symo-12-5-3-480) | [SolarEdge SE12.5K (Three Phase)](https://comparepv.com/inverter/solaredge-solaredge-se12-5k-three-phase) |
| Manufacturer | Fronius International | SolarEdge |
| Rated AC power | 12.495 kW | 12.5 kW |
| Type | Grid-tie | Grid-tie |


## Where they differ

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


| Parameter | Fronius Symo 12.5-3 480 | SolarEdge SE12.5K (Three Phase) | Difference |
| --- | --- | --- | --- |
| Weight | 35.5 kg | 33.2 kg | -2.3 kg for SolarEdge SE12.5K (Three Phase) |
| Max AC current | 15.0 A | 20.0 A | 5.0 A apart |
| Ingress protection | NEMA 4X | IP65 | NEMA 4X vs IP65 |
| Dimensions | 724x511x226 mm | 540x315x260 mm | 724x511x226 mm vs 540x315x260 mm |


## Every compared parameter


| Parameter | Fronius Symo 12.5-3 480 | SolarEdge SE12.5K (Three Phase) |
| --- | --- | --- |
| Rated AC power | 12.49 kW | 12.50 kW |
| Max AC power | 12.49 kW | 12.50 kW |
| Grid connection | 3-phase | 3-phase |
| Nominal AC voltage | - | 400 V |
| Max AC current | 15.0 A | 20.0 A |
| Max PV power | - | 16.85 kW |
| DC/AC ratio | - | 1.35 |
| Max DC voltage | 1000 V | 1000 V |
| MPPT voltage range | - | - |
| Start voltage | 200 V | - |
| MPP trackers | - | - |
| Strings per tracker | - | - |
| Max input current per tracker | - | - |
| European efficiency | - | 97.7 % |
| Max efficiency | 98.1 % | 98.0 % |
| CEC efficiency | 97.0 % | - |
| Battery input | - | - |
| Battery voltage | - | - |
| Max charge current | - | - |
| Backup power | - | - |
| Weight | 35.5 kg | 33.2 kg |
| Weight per kW | 2.8 kg/kW | 2.7 kg/kW |
| Dimensions | 724x511x226 mm | 540x315x260 mm |
| Ingress protection | NEMA 4X | IP65 |
| Cooling | forced-air | forced-air |
| Noise | - | 55 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 | 10 yrs | - |


## Related comparisons

- [Fronius Symo 12.5-3 480 vs SolarEdge SE12.5K](https://comparepv.com/compare-inverters/fronius-international-fronius-symo-12-5-3-480/solaredge-se12-5k) - 6 differences, the largest is warranty
- [Fronius Symo 12.5-3 480 vs Fronius International Symo Advanced 12.5-3-M](https://comparepv.com/compare-inverters/fronius-international-fronius-symo-12-5-3-480/fronius-international-symo-advanced-12-5-3-m) - 4 differences, the largest is max efficiency
- [Fronius Symo 12.5-3 480 vs Fronius Primo 12.5-1](https://comparepv.com/compare-inverters/fronius-international-fronius-symo-12-5-3-480/fronius-international-fronius-primo-12-5-1) - 6 differences, the largest is max efficiency


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Source: https://comparepv.com/compare-inverters/fronius-international-fronius-symo-12-5-3-480/solaredge-solaredge-se12-5k-three-phase

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