Universal Solar Inverter Cooling Kit 24V DC With Thermostat

Universal Active Cooling for Solar Inverters With Thermostat

This universal active cooling kit is designed for solar inverters of different brands and models. Its compact 430 × 40 × 70 mm cooling strip can be installed beneath many types of inverters, provided there is sufficient 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 conditions, it can reduce inverter operating temperatures under load by approximately 15–30°C.

This version includes an automatic thermostat with an external temperature sensor. The thermostat is housed separately from the cooling strip, allowing flexible positioning during installation.

Automatic Cooling With Thermostat

The thermostat monitors the inverter's temperature using an external sensor and automatically switches the cooling fans on and off. No external timer or smart plug is required.

The default thermostat settings are:

• Cooling switches on: 40°C
• Cooling switches off: 35°C
• Temperature measurement: External sensor
• Thermostat location: Separate from the cooling strip

The switching temperatures can be adjusted according to the instructions in the supplied user manual.

Prefer external fan control? See our Universal Cooling Kit Without Thermostat , which can be controlled using your own automation, timer or switched power socket.

Cooling Performance and Measurements

Interested in how active inverter cooling performs in 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 intended for photovoltaic inverters from different manufacturers. Compatibility depends on the available installation space and the possibility of securely mounting the cooling strip to the wall beneath the inverter.

• Width: 430 mm
• Height: 40 mm
• Depth: 70 mm
• Installation position: Below the inverter
• Cooling strip mounting: Screwed to the wall
• Thermostat and sensor mounting: 3M adhesive tape

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

Wall-mounting screws and anchors are not included. Suitable mounting hardware must be selected according to the wall material.

Package Contents

• Universal cooling strip with three Sunon fans
• Automatic thermostat with external temperature sensor
• 24V DC / 1.2A power supply with a 2 m cable
• 2 m connecting cable between the thermostat and cooling strip

Optional 1.5 m and 4 m power extension cables are available separately.

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
• Standby power consumption: 0.5 W
• Operating power consumption: 7 W
• Construction: 3D-printed frame
• Control: Automatic thermostat
• Thermostat-to-strip cable: 2 m
• 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 installation and operating conditions.

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

The thermostat automatically activates the fans when the measured temperature reaches the selected threshold and switches them off after the inverter cools down.

Installation of the Cooling Strip and Thermostat

Watch the Universal Cooling Kit Installation Video →

1. Mount the Cooling Strip

Position the cooling strip on the wall beneath the inverter and secure it using appropriate screws and wall anchors.

Mounting hardware is not included. Select suitable fasteners according to the material of your wall.

2. Install the Thermostat Box

Choose a smooth, clean surface for the thermostat box. Thoroughly degrease the surface and allow it to dry.

Remove the protective film from the 3M adhesive tape and press the thermostat box firmly against the surface for at least 5 seconds.

The room temperature during adhesive installation must be at least 15°C.

3. Attach the Temperature Sensor

Prepare the mounting surface in the same way: clean, degrease and allow it to dry.

Attach the temperature sensor to a suitable location on the inverter that feels hottest during normal operation.

Press the sensor firmly into place using its adhesive tape.

4. Connect the Cooling System

Connect the thermostat box to the cooling strip using the supplied connecting cable.

Finally, connect the 24V DC power supply to the thermostat box. The fans will then operate automatically according to the measured temperature.

Adjusting the Thermostat Settings

The thermostat is preset to switch the fans on at 40°C and off at 35°C.

Instructions for changing these settings are provided in the supplied user manual.

Need Help Checking Compatibility?

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

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