Abstract: The invention relates to a switchgear cabinet air-conditioning apparatus for installing or semi-installing on or in a device to be air-conditioned, with a large number of electronic or electrotechnical components in this device. All the air-conditioning means, including fans, compressors, heat exchangers, piping, refrigerant and evaporators are located inside the housing of the switchgear cabinet air-conditioning apparatus. The housing has means for attachment to or in a section in the device to be air-conditioned and the housing comprises a first subsection oriented towards the air-conditioning device, and a second subsection directed towards the free environment. A separation region is formed between the first and the second housing subsection, wherein all or a large majority of these air-conditioning means, which are at risk of leaking in terms of the refrigerant, are arranged in the second subsection directed towards the free environment and in a compartment formed in this regard.

Abstract: The invention relates to an air conditioning device for switchgear cabinets, wherein the air conditioning device, which is located in a case, is arranged in constructional proximity to a switchgear cabinet and an air circulation between the switchgear cabinet and the air conditioning device is allowed by means of openings directed to the switchgear cabinet. According to the invention the air conditioning device can be operated in three different modes, which allow an active cooling, a passive cooling and a heating of the circulating air.