In BlokSeT, it is not mandatory to use forced ventilation for IP54. But however, there are specific configurations where it is necessary to use forced ventilation for IP54.
Below are the 3 cases where use of forced ventilation is necessary for IP54.  Details of Ambient temperature and the derating of the Breakers are mentioned in the latest BlokSeT Evo Catalog / offer selection tables.

Note:
- The derating values of the breakers are calculated based on the forced ventilation in all the above cases.
- The forced ventilation solution is part of BlokSeT offers and they are clearly specified in the catalog / reference guide, below are some of the offers we have used such solution.

Case 1: Forced ventilation is optional solution for D-type column when we use NW40b-63 with 600 & 1000mm column depth. For more details please refer latest BlokSeT catalog / reference guide.
Case 2: Forced Ventilation is mandatory when we use BlokSeT Dc capacitor panels.
Case 3: It is mandatory to use Fan for Ms speed drive/Soft starters for IP54. The details of fan are mentioned in the offer selection table.

In case of any queries related to forced ventilation, please contact L3 expert technical support via bFO.

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