Active Cooling for SolaX X3 Hybrid G4 24V DC – Without Thermostat

Active Cooling for SolaX X3 Hybrid G4 Without Thermostat

Effective active cooling 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.

This version is supplied without a thermostat or automatic temperature control. It is designed for users who prefer to control the cooling fans using their own automation, a smart plug or a timer.

How Is Cooling Controlled Without a Thermostat?

The cooling kit does not switch on automatically according to inverter temperature. The fans must be switched on and off externally.

• Smart plug with automation: Switch the fans according to inverter temperature, provided your automation system can monitor it.
• Timer: Schedule cooling during the day and switch it off at night.
• Manual control: Turn the fans on and off by connecting or disconnecting the power supply.

Prefer automatic temperature control? Choose our SolaX X3 Hybrid G4 cooling kit with thermostat . This version automatically controls the fans according to the temperature of the inverter's cooling fins.

Cooling Performance and Customer Experiences

See how active inverter cooling performs under real operating conditions. Explore our temperature measurements, cooling efficiency graphs and customer experiences.

View 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

Installation clearance: At least 15 cm of free space below the inverter's cooling fins is recommended. With step-by-step installation 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 cable.

If a longer cable is required, optional 1.5 m and 4 m extension cables 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
• Power consumption when switched off: 0 W
• Operating power consumption: 7 W
• Construction: 3D-printed mounting frame
• Control: External switching, no thermostat

How Does Active Solar Inverter Cooling Work?

The active cooling system draws air in from below the inverter and improves airflow around its cooling fins, 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.

Important: This version does not have an integrated thermostat. The fans run whenever power is supplied and stop when the power is disconnected.

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.

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

Important: Do not tighten the locking screws before installation.

User Manual and Documentation

• Download User Manual – SXX3G401 (PDF)
• Download Conformity Certificate (PDF)

Need Help Choosing the Right Cooling Kit?

Not sure whether this cooling kit is compatible with your inverter or whether there is 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.