As we’ve already discussed in our previous articles on thermal management, controlling the temperature inside an electrical enclosure is essential to ensure operational continuity, safety, and long-term component reliability.
However, when heat can no longer be dissipated through natural or filtered ventilation, an active cooling solution becomes necessary. And this is where questions often arise: how do you properly size a cooling unit? Which parameters should be considered? And what mistakes should be avoided?
Selecting a cooling unit is not just about cooling capacity—it requires a broader evaluation of factors that directly affect system performance: ambient conditions, actual heat dissipation, required protection rating, condensation management, and control logic.
An incorrect sizing can lead to very real consequences:
- unstable internal temperatures
- higher energy consumption,
- reduced component lifetime
- unexpected downtime.
This is why a structured approach is essential.
Want to go deeper and discover how to correctly calculate the thermal balance, which standards to consider, how to manage airflow and condensation or the differences between mechanical and digital control?
Download our #whitepaper “Guide to selecting a cooling unit for electrical enclosures”.
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At Fandis, we design thermal management solutions to ensure reliable performance over time, even in demanding operating conditions.
To learn more about our solutions for enclosure ventilation and cooling, keep exploring our blog, visit fandis.com, or get in touch with our technical team.