---
title: "Fronius Primo 11.4-1 vs Fronius Symo 12.0-3 208-240 - Inverter Comparison | ComparePV"
description: "Compare Fronius Primo 11.4-1 vs Fronius Symo 12.0-3 208-240 side by side: what actually differs, efficiency, MPP trackers, battery input and the full specification."
source: "https://comparepv.com/compare-inverters/fronius-international-fronius-primo-11-4-1/fronius-international-fronius-symo-12-0-3-208-240"
updated: 2026-01-16
---

# Fronius Primo 11.4-1 vs Fronius Symo 12.0-3 208-240

Symo 12.0-3 208-240 leads on the differences that matter

The largest is rated ac power: 0.59 kW apart. 11 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 Primo 11.4-1](https://comparepv.com/inverter/fronius-international-fronius-primo-11-4-1) | [Fronius Symo 12.0-3 208-240](https://comparepv.com/inverter/fronius-international-fronius-symo-12-0-3-208-240) |
| Manufacturer | Fronius International | Fronius International |
| Rated AC power | 11.4 kW | 11.995 kW |
| Type | Grid-tie | Grid-tie |


## Where they differ

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


| Parameter | Primo 11.4-1 | Symo 12.0-3 208-240 | Difference |
| --- | --- | --- | --- |
| Rated AC power | 11.40 kW | 11.99 kW | 0.59 kW apart |
| Max AC power | 11.40 kW | 11.99 kW | 0.59 kW apart |
| Weight | 37.4 kg | 34.8 kg | -2.6 kg for Symo 12.0-3 208-240 |
| Max efficiency | 96.7 % | 97.0 % | +0.3 pp for Symo 12.0-3 208-240 |
| Grid connection | Single-phase | 3-phase | Single-phase vs 3-phase |
| Max AC current | 47.5 A | 33.3 A | 14.2 A apart |
| Start voltage | 80 V | 200 V | -120 V for Primo 11.4-1 |
| Weight per kW | 3.3 kg/kW | 2.9 kg/kW | -0.4 kg/kW for Symo 12.0-3 208-240 |


## Every compared parameter


| Parameter | Primo 11.4-1 | Symo 12.0-3 208-240 |
| --- | --- | --- |
| Rated AC power | 11.40 kW | 11.99 kW |
| Max AC power | 11.40 kW | 11.99 kW |
| Grid connection | Single-phase | 3-phase |
| Nominal AC voltage | 240 V | - |
| Max AC current | 47.5 A | 33.3 A |
| Max PV power | - | - |
| DC/AC ratio | - | - |
| Max DC voltage | 1000 V | 1000 V |
| MPPT voltage range | 200-800 V | - |
| Start voltage | 80 V | 200 V |
| MPP trackers | 2 | - |
| Strings per tracker | - | - |
| Max input current per tracker | 33.0 A | - |
| European efficiency | - | - |
| Max efficiency | 96.7 % | 97.0 % |
| CEC efficiency | 96.5 % | 96.5 % |
| Battery input | - | - |
| Battery voltage | - | - |
| Max charge current | - | - |
| Backup power | - | - |
| Weight | 37.4 kg | 34.8 kg |
| Weight per kW | 3.3 kg/kW | 2.9 kg/kW |
| Dimensions | 724x511x226 mm | 724x511x226 mm |
| Ingress protection | NEMA 4X | NEMA 4X |
| Cooling | forced-air | forced-air |
| Noise | - | - |
| 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 | 10 yrs |


## Related comparisons

- [Fronius Primo 11.4-1 vs Growatt MOD 11KTL3-X](https://comparepv.com/compare-inverters/fronius-international-fronius-primo-11-4-1/growatt-mod-11ktl3-x) - 16 differences, the largest is rated ac power
- [Fronius Primo 11.4-1 vs Fronius Symo Advanced 12.0-3 208-240](https://comparepv.com/compare-inverters/fronius-international-fronius-primo-11-4-1/fronius-international-fronius-symo-advanced-12-0-3-208-240) - 8 differences, the largest is rated ac power
- [Fronius Primo 11.4-1 vs Growatt MOD 12KTL3-X](https://comparepv.com/compare-inverters/fronius-international-fronius-primo-11-4-1/growatt-mod-12ktl3-x) - 16 differences, the largest is rated ac power
- [Fronius Symo 12.0-3 208-240 vs Growatt MOD 12KTL3-X2(Pro)](https://comparepv.com/compare-inverters/fronius-international-fronius-symo-12-0-3-208-240/growatt-mod-12ktl3-x2-pro) - 10 differences, the largest is max dc voltage
- [Fronius Symo 12.0-3 208-240 vs Sungrow SG12KTL-M](https://comparepv.com/compare-inverters/fronius-international-fronius-symo-12-0-3-208-240/sungrow-sg12ktl-m) - 9 differences, the largest is max dc voltage


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Source: https://comparepv.com/compare-inverters/fronius-international-fronius-primo-11-4-1/fronius-international-fronius-symo-12-0-3-208-240

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