---
title: "Fronius International Symo Advanced 12.5-3-M vs SolarEdge SE12.5K - Inverter Comparison | ComparePV"
description: "Compare Fronius International Symo Advanced 12.5-3-M vs SolarEdge SE12.5K side by side: what actually differs, efficiency, MPP trackers, battery input and the full specification."
source: "https://comparepv.com/compare-inverters/fronius-international-symo-advanced-12-5-3-m/solaredge-se12-5k"
updated: 2026-01-16
---

# Fronius International Symo Advanced 12.5-3-M vs SolarEdge SE12.5K

SE12.5K leads on the differences that matter

The largest is max pv power: 1.95 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 International Symo Advanced 12.5-3-M](https://comparepv.com/inverter/fronius-international-symo-advanced-12-5-3-m) | [SolarEdge SE12.5K](https://comparepv.com/inverter/solaredge-se12-5k) |
| Manufacturer | Fronius International | SolarEdge |
| Rated AC power | 12.5 kW | 12.5 kW |
| Type | Grid-tie | Grid-tie |


## Where they differ

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


| Parameter | Symo Advanced 12.5-3-M | SE12.5K | Difference |
| --- | --- | --- | --- |
| Max PV power | 18.80 kW | 16.85 kW | 1.95 kW apart |
| Weight | 35.4 kg | 30.7 kg | -4.7 kg for SE12.5K |
| European efficiency | 97.4 % | 97.7 % | +0.3 pp for SE12.5K |
| DC/AC ratio | 1.50 | 1.35 | +0.16 for Symo Advanced 12.5-3-M |
| Weight per kW | 2.8 kg/kW | 2.5 kg/kW | -0.4 kg/kW for SE12.5K |
| Max efficiency | 97.8 % | 98.0 % | +0.2 pp for SE12.5K |
| Ingress protection | IP66 | IP65 | IP66 vs IP65 |
| Max AC current | 18.9 A | 20.0 A | 1.1 A apart |
| Dimensions | 725x510x225 mm | 549x317x264 mm | 725x510x225 mm vs 549x317x264 mm |


## Every compared parameter


| Parameter | Symo Advanced 12.5-3-M | SE12.5K |
| --- | --- | --- |
| Rated AC power | 12.50 kW | 12.50 kW |
| Max AC power | 12.50 kW | 12.50 kW |
| Grid connection | 3-phase | 3-phase |
| Nominal AC voltage | 400 V | 400 V |
| Max AC current | 18.9 A | 20.0 A |
| Max PV power | 18.80 kW | 16.85 kW |
| DC/AC ratio | 1.50 | 1.35 |
| Max DC voltage | 1000 V | 1000 V |
| MPPT voltage range | 200-800 V | - |
| Start voltage | 200 V | - |
| MPP trackers | 2 | - |
| Strings per tracker | 3 | - |
| Max input current per tracker | - | - |
| European efficiency | 97.4 % | 97.7 % |
| Max efficiency | 97.8 % | 98.0 % |
| CEC efficiency | - | - |
| Battery input | - | - |
| Battery voltage | - | - |
| Max charge current | - | - |
| Backup power | - | - |
| Weight | 35.4 kg | 30.7 kg |
| Weight per kW | 2.8 kg/kW | 2.5 kg/kW |
| Dimensions | 725x510x225 mm | 549x317x264 mm |
| Ingress protection | IP66 | IP65 |
| Cooling | forced-air | forced-air |
| Noise | - | 50 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 | - | 20 yrs |


## Related comparisons

- [Fronius International Symo Advanced 12.5-3-M vs SolarEdge SE12.5K (Three Phase)](https://comparepv.com/compare-inverters/fronius-international-symo-advanced-12-5-3-m/solaredge-solaredge-se12-5k-three-phase) - 8 differences, the largest is max pv power
- [Fronius International Symo Advanced 12.5-3-M vs Fronius Primo 12.5-1](https://comparepv.com/compare-inverters/fronius-international-symo-advanced-12-5-3-m/fronius-international-fronius-primo-12-5-1) - 8 differences, the largest is max efficiency
- [Fronius International Symo Advanced 12.5-3-M vs Fronius Symo 12.5-3 480](https://comparepv.com/compare-inverters/fronius-international-symo-advanced-12-5-3-m/fronius-international-fronius-symo-12-5-3-480) - 4 differences, the largest is max efficiency


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Source: https://comparepv.com/compare-inverters/fronius-international-symo-advanced-12-5-3-m/solaredge-se12-5k

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