---
title: "Sungrow SG40CX-P2 vs Sungrow SG40CX-P3-CN - Inverter Comparison | ComparePV"
description: "Compare Sungrow SG40CX-P2 vs Sungrow SG40CX-P3-CN side by side: what actually differs, efficiency, MPP trackers, battery input and the full specification."
source: "https://comparepv.com/compare-inverters/sungrow-sg40cx-p2/sungrow-sg40cx-p3-cn"
updated: 2026-01-16
---

# Sungrow SG40CX-P2 vs Sungrow SG40CX-P3-CN

SG40CX-P3-CN leads on the differences that matter

The largest is max input current per tracker: 10.0 A more headroom. 16 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 | [Sungrow SG40CX-P2](https://comparepv.com/inverter/sungrow-sg40cx-p2) | [Sungrow SG40CX-P3-CN](https://comparepv.com/inverter/sungrow-sg40cx-p3-cn) |
| Manufacturer | Sungrow | Sungrow |
| Rated AC power | 40 kW | 40 kW |
| Type | Grid-tie | Grid-tie |


## Where they differ

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


| Parameter | SG40CX-P2 | SG40CX-P3-CN | Difference |
| --- | --- | --- | --- |
| Max input current per tracker | 30.0 A | 40.0 A | +10.0 A for SG40CX-P3-CN |
| Nominal AC voltage | 400 V | 380 V | 20 V apart |
| Dimensions | 575x645x245 mm | 595x645x245 mm | 575x645x245 mm vs 595x645x245 mm |


## Every compared parameter


| Parameter | SG40CX-P2 | SG40CX-P3-CN |
| --- | --- | --- |
| Rated AC power | 40.00 kW | 40.00 kW |
| Max AC power | 44.00 kW | 44.00 kW |
| Grid connection | 3-phase | 3-phase |
| Nominal AC voltage | 400 V | 380 V |
| Max AC current | 66.9 A | 66.9 A |
| Max PV power | 56.00 kW | - |
| DC/AC ratio | 1.40 | - |
| Max DC voltage | 1100 V | 1100 V |
| MPPT voltage range | 160-1000 V | 160-1000 V |
| Start voltage | 200 V | 200 V |
| MPP trackers | 4 | 4 |
| Strings per tracker | 2 | 2 |
| Max input current per tracker | 30.0 A | 40.0 A |
| European efficiency | 98.3 % | - |
| Max efficiency | 98.5 % | 98.6 % |
| CEC efficiency | - | - |
| Battery input | - | - |
| Battery voltage | - | - |
| Max charge current | - | - |
| Backup power | - | - |
| Weight | 40.0 kg | 40.0 kg |
| Weight per kW | 1.0 kg/kW | 1.0 kg/kW |
| Dimensions | 575x645x245 mm | 595x645x245 mm |
| Ingress protection | IP66 | IP66 |
| Cooling | forced-air | forced-air |
| Noise | - | 60 dB |
| Max operating temperature | 60 °C | 60 °C |
| Wi-Fi | Yes | - |
| Ethernet | Yes | - |
| Arc fault protection | Yes | - |
| Integrated DC switch | Yes | Yes |
| Warranty | - | - |


## Related comparisons

- [Sungrow SG40CX-P2 vs Growatt MID 40KTL3-X](https://comparepv.com/compare-inverters/sungrow-sg40cx-p2/growatt-mid-40ktl3-x) - 10 differences, the largest is max input current per tracker
- [Sungrow SG40CX-P2 vs Huawei SUN2000-40KTL-M3](https://comparepv.com/compare-inverters/sungrow-sg40cx-p2/huawei-sun2000-40ktl-m3) - 8 differences, the largest is max input current per tracker
- [Sungrow SG40CX-P2 vs Solis-40K](https://comparepv.com/compare-inverters/sungrow-sg40cx-p2/ginlong-solis-solis-40k) - 8 differences, the largest is max pv power


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Source: https://comparepv.com/compare-inverters/sungrow-sg40cx-p2/sungrow-sg40cx-p3-cn

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