Universal Solar Inverter Cooling Kit 24V DC Without Thermostat

Universal Active Cooling for Solar Inverters Without Thermostat

Universal active cooling kit for solar inverters of different brands and models. The compact cooling strip measures 430 × 40 × 70 mm (width × height × depth) and can be installed beneath many types of inverters, provided there is enough space and a suitable wall-mounting surface.

The cooling system uses three Sunon 60 mm fans to improve airflow around the inverter and help dissipate heat during operation. Depending on installation and operating conditions, it can reduce inverter temperatures under load by approximately 15–30°C.

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

How Is Cooling Controlled Without a Thermostat?

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

• Smart plug with automation: Switch the cooling 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: Switch the fans on and off by connecting or disconnecting the power supply.

Prefer automatic temperature control? Choose our Universal Solar Inverter Cooling Kit With Thermostat . The thermostat version automatically switches the fans according to the measured temperature.

Cooling Performance and Measurements

Interested in how active cooling performs under real operating conditions? Explore our temperature measurements and cooling efficiency graphs.

View Solar Inverter Cooling Efficiency Graphs →

Universal Compatibility and Dimensions

This cooling strip is designed for photovoltaic inverters from different manufacturers. Compatibility depends on the available space beneath the inverter and the possibility of securely mounting the strip to the wall.

• Width: 430 mm
• Height: 40 mm
• Depth: 70 mm
• Installation position: Below the inverter
• Mounting method: Screwed to the wall

Before ordering: Check the available installation space and make sure the cooling strip can be securely attached beneath your inverter.

Mounting screws and wall anchors are not included. Choose suitable mounting hardware according to your wall material.

Package Contents and Power Supply

• Universal cooling strip with three Sunon fans
• 24V DC / 1.2A power supply
• 2 m power cable

Optional 1.5 m and 4 m extension cables are available separately if a longer power connection is required.

Important: This version does not include a thermostat or temperature sensor.

Technical Specifications

• Operating voltage: 24V DC
• Power connector: 5.5 × 2.1 mm
• Minimum power supply current: 0.8 A
• 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 frame
• Control: External switching, no thermostat
• Cooling strip dimensions: 430 × 40 × 70 mm

How Does Active Solar Inverter Cooling Work?

The cooling strip directs airflow upwards from beneath the inverter, helping remove heat from its cooling surfaces.

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 has no integrated thermostat. The fans run whenever power is supplied and stop when power is disconnected.

Easy Wall Installation

Watch the Universal Cooling Kit Installation Video →

1. Check the installation space. Make sure there is enough room beneath the inverter for the cooling strip.
2. Position the cooling strip. Place it on the wall beneath the inverter, aligned with the surfaces to be cooled.
3. Secure the strip to the wall. Use appropriate screws and wall anchors suitable for your wall material.
4. Connect the power supply. Plug in the supplied 24V DC power adapter.
5. Set up external switching. Use a smart plug, timer or manual control to switch the cooling fans on and off.

Mounting hardware is not included. Select suitable fasteners according to the type and condition of your wall.

Need Help Choosing the Right Cooling Kit?

Not sure whether the universal cooling strip will fit beneath your solar inverter?

Browse our Universal Inverter Cooling Kits or contact us with your inverter model and available installation dimensions.