SUNGROW - Onduleur SG125CX-P3

Key technical specifications of the SG125CX-P3

DC side (entrance)

• Maximum PV power : 198 kWp (DC/AC ratio of 1.58)

• Maximum input voltage : 1100 V

• MPPT voltage range : 180 V – 1000 V, for maximum sizing flexibility

• 10 independent MPPTs , each with 2 string inputs — for a total of 20 strings

• Maximum input current : 40 A per MPPT (400 A total), suitable for the latest generation of high-current modules (TOPCon, HJT)

• Maximum short-circuit current : 50 A per MPPT (500 A total)

• MC4 connectors compatible with 4 to 6 mm² cables

AC side (exit)

• Rated power : 125 kW / 125 kVA

• Output voltage : 220V/380V or 230V/400V three-phase + neutral

• Rated output current : 181.1 A (at 230 V)

• AC Voltage Range : 320V – 480V

• Frequency : 50 Hz / 60 Hz (range 45 – 65 Hz)

• THD : < 2 % à puissance nominale

• Power factor : > 0.99 / adjustable from 0.8 inductive to 0.8 capacitive

• AC connection : OT/DT terminal block up to 240 mm²

Yield

• Maximum yield : 98.5%

• European yield : 98.3%

These efficiency levels place the SG125CX-P3 among the highest performing string inverters in its class, reducing conversion losses and directly improving the return on investment of the installation.

Why choose the Sungrow SG125CX-P3 for your C&I projects?

1. High yield to maximize production
Sungrow's Global MPPT Scanning increases production yield by more than 2% by continuously identifying the global maximum power point, even in cases of partial shading or uneven soiling on the modules. Combined with intelligent PID recovery , the SG125CX-P3 maintains optimal production levels throughout the installation's lifetime.

2. Extended compatibility with the latest generation modules
With an input current of 40 A per MPPT , the SG125CX-P3 is natively compatible with the Solar panels high current: TOPCon , HJT and large cells (182 mm, 210 mm) .

3. Enhanced security with AFCI 3.0+
DC arc flash detection ( AFCI 3.0+ ) monitors the entire DC circuit over a range of 600 meters .
Other security features:

• PV-to-Earth Insulation Fault Protection

• Integrated DC type I+II and AC type II surge arresters

• AC leakage current monitoring and short-circuit protection

• Integrated DC disconnect switch

4. Robustness and durability for all environments

• IP66 : Complete protection against dust and powerful water jets

• C5 anti-corrosion : suitable for coastal, industrial and aggressive environments

• Temperature range : -30 °C to +60 °C

• Maximum altitude : 3,000 m

• Cooling : Intelligent forced ventilation with self-cleaning ducts — reduces maintenance interventions

5. Intelligent management and advanced monitoring

• High-precision current detection by string : rapid identification of underperforming strings

• Integrated IV diagnostics : IV curve for each string, without external equipment

• Module-level isolation localization : identification of the faulty module without going onto the roof

• Communication : RS485, WLAN and Ethernet (optional) — easy integration with Sungrow's iSolarCloud monitoring platforms

• Interface : LED + Bluetooth + mobile app for quick setup

General data and dimensions

• Dimensions : 1025 × 795 × 360 mm (W × H × D)

• Weight : ≤ 88 kg

• Mounting : wall bracket

• Topology : transformerless

• Consommation nocturne : < 5 W

Standards and certifications

The SG125CX-P3 complies with European standards.
It supports advanced network functions: LVRT, HVRT, Q at night, active and reactive power control, and ramp-up — in accordance with the requirements of European network operators.

The Sungrow SG125CX-P3 at POwR Connect

At POwR Connect , we list the Sungrow SG125CX-P3 inverter in our catalog dedicated to professional photovoltaic installers . As a distributor specializing in solar and EV charging equipment, POwR Connect brings you:

• Professional prices (excluding VAT) are accessible directly from your customer area.

• Stock availability with optimized delivery times for your construction projects

• Technical support for sizing and choosing the inverter best suited to your project (roof, shade structure, Ground )