Active Cooling for SolaX X3 Hybrid G4 24V DC With Thermostat

Active Cooling for SolaX X3 Hybrid G4 with Thermostat

An effective active cooling kit designed for SolaX X3 Hybrid G4 and DRAŽICE IN.HYBRID COMPACT solar inverters rated from 5 to 15 kW. It helps reduce inverter operating temperatures under load by approximately 15–30°C, depending on installation and operating conditions.

The cooling system includes an automatic thermostat, three high-quality Sunon 60 mm fans and a 24V DC power supply. Installation is straightforward and does not require modifications to the inverter.

Automatic Cooling with Thermostat

The integrated thermostat automatically switches the cooling fans on and off according to the temperature of the inverter's cooling fins. No external timer or smart plug is required.

Looking for a version without a thermostat? See our SolaX X3 Hybrid G4 cooling kit without thermostat , which can be controlled using your own automation or a switched power socket.

Cooling Performance and Customer Experiences

Want to see how active cooling performs in practice? Explore our inverter temperature measurements, cooling efficiency graphs and customer experiences.

View Solar Inverter Cooling Efficiency Graphs →

Compatible Solar Inverters

SolaX X3 Hybrid G4 – 5 to 15 kW

• X3-HYBRID-5.0-D/M
• X3-HYBRID-6.0-D/M
• X3-HYBRID-8.0-D/M
• X3-HYBRID-10.0-D/M
• X3-HYBRID-12.0-D/M
• X3-HYBRID-15.0-D/M

View SolaX X3 Hybrid G4 Datasheet (PDF)

DRAŽICE IN.HYBRID COMPACT – 5 to 15 kW

• IN.HYBRID COMPACT 5.0K-D/M
• IN.HYBRID COMPACT 6.0K-D/M
• IN.HYBRID COMPACT 8.0K-D/M
• IN.HYBRID COMPACT 10.0K-D/M
• IN.HYBRID COMPACT 12.0K-D/M
• IN.HYBRID COMPACT 15.0K-D/M

Required installation clearance: At least 15 cm of free space below the inverter's cooling fins is recommended. With step-by-step assembly of the mounting leg and cooling unit, 13 cm is sufficient.

Package Contents and Power Supply

The package includes a 24V DC / 1.2A power supply with a 2-metre power cable.

If additional cable length is required, optional extension cables of 1.5 m and 4 m are available separately.

Technical Specifications

• Operating voltage: 24V DC
• Power connector: 5.5 × 2.1 mm
• Fans: 3 × Sunon 60 mm
• Fan technology: Vapo (MagLev)
• Rated fan lifespan: 70,000 hours
• Noise level: 31 dBA
• Total airflow: 138 m³/h
• Standby power consumption: 0.5 W
• Operating power consumption: 7 W
• Construction: 3D-printed mounting frame
• Control: Automatic thermostat

How Does Active Solar Inverter Cooling Work?

The active cooling system directs air towards the inverter from below, improving airflow around its cooling fins and helping dissipate heat generated during operation.

Under load, active cooling can reduce inverter operating temperatures by approximately 15–30°C, depending on the installation environment and operating conditions.

Lower operating temperatures can help reduce thermal power derating during hot weather and limit thermal stress on the inverter's electronic components.

Automatic Thermostat Settings

The thermostat monitors the temperature of the inverter's cooling fins and controls the fans automatically.

The default switching temperatures are:

• Cooling switches on: 40°C
• Cooling switches off: 35°C

Temperature is measured using a sensor positioned on the inverter's cooling fins. The switching temperatures can be adjusted according to the instructions in the supplied user manual.

Easy Installation Without Modifying the Inverter

Watch the SolaX X3 Hybrid G4 Installation Video →

Slide the cooling unit underneath the inverter and attach it to the lower ends of the cooling fins, where it clicks into position.

Route the thermostat temperature sensor behind the inverter. Position it on the cooling fins approximately one-third of the way across from the left side and around the middle of their height.

Insert the sensor from the rear and slide it forward until it is held securely in place.

Important: Do not position the sensor in the centre of the inverter, as the cooling airflow could affect the measured temperature.

To remove the cooling unit, turn the side locking screws fully in and slide the unit out from underneath the inverter.

Do not tighten the locking screws before installation.

Adjusting the Thermostat Temperature

Instructions for changing the fan switch-on and switch-off temperatures are provided in the supplied user manual.

Need Help Choosing the Right Cooling Kit?

Not sure whether this cooling kit is compatible with your inverter or whether you have enough installation space?

Explore our SolaX inverter cooling kits or contact us with your exact inverter model number. We will help you choose a suitable solution.