Abstract: The disclosure relates to a cooling device, in particular for cooling components that are housed in a switchgear cabinet, comprising a first cooling fan for blowing air from the switchgear cabinet through a first heat exchanger, and a second cooling fan for blowing ambient air through a second heat exchanger, characterized in that the cooling device further comprises a voltage supply having a step-up and/or step-down converter, which is connected via a rectifier to a wide-range input for single-phase or multiphase AC voltage, and which charges a capacitor to a DC link voltage which is higher or lower than a mains voltage across the wide-range input, a power supply unit of at least one of the two cooling fans being connected in parallel to the capacitor. The disclosure further relates to the use of such a cooling device and to a corresponding method for operating the cooling device.

Abstract: A fastening system for assembling appliances, in particular electrical appliances, comprising at least one profile rail provided with openings and comprising at least one quick-fastener which has a body in which at least one internal thread is formed, is characterized in that the body has over its length (L) at least two spaced-apart internal threads, wherein, in an exact position of the quick-fastener relative to the profile rail, each of the internal threads is brought into alignment with one of the openings of the profile rail, and in that a clamping blade having the same length L as the body is attached to the body, which clamping blade forms between it and the body a gap for receiving the profile side and holds the body against the profile rail by friction.

Abstract: A corner connector for connecting at least two frame profiles of a frame rack arranged perpendicular to each other, which frame rack consists of a plurality of pieces, at least one of which is designed to bear against one or more of the frame profiles, characterized in that the piece which is designed to bear against one or more of the frame profiles is a first molded sheet metal part with a receiving opening in which or on which a threaded sleeve is situated.

Abstract: A base assembly for the rack of a switchgear cabinet, comprising horizontal frame profiles which have the height h and which surround a base section of the rack, wherein at the height h, the frame profiles have a first horizontal mounting plane, is characterized in that, spaced from the first horizontal mounting plane, at least one additional mounting plane is provided, on or adjoining a fixed support which is formed at least sectionally on one or more of the frame profiles and projects into the base section.

Abstract: A frame profile for a switchgear cabinet rack has two profile sides perpendicular to one another forming outer sides of the rack, and being in the form of a hollow-profile section. The profile sides transition into one another via transition sections that are perpendicular thereto and a connecting web without formation of an outer edge. The profile sides are adjoined, facing away from the transition sections, by first profile sections which are respectively perpendicular and parallel to the associated profile sides. At least the perpendicular or the parallel first profile sections have a row of fastening receptacles. The perpendicular first profile sections are adjoined by two profile sections which transition into an at least partially rounded contour section, the second profile sections each form with the contour section an undercut of the contour section on the outer side of the profile, and the frame profile encloses a coherent hollow chamber.

Abstract: The invention relates to a mounting rail for the interior construction of a switch cabinet housing, said mounting rail comprising a mounting section that has a clamping section at its first end and a support section at its second end opposite the first end, characterized in that the clamping section has a knee lever with a fastening side, via which the knee lever is detachably screwed to the first end of the mounting section and with a clamping side that includes an angle with the fastening side.

Abstract: The invention relates to an air guidance unit comprising an air guidance housing and a fan assembly that can be detachably connected thereto. In order to allow an efficient and time-saving maintenance of such an air guidance unit, it is provided according to the invention that the air guidance housing comprises one or more blocking studs, that the fan assembly comprises closure receptions each having a blocking section into which the blocking stud can be swiveled, and that a detachable locking piece immobilizes the fan assembly in the mounting position of the fan assembly.

Abstract: The invention relates to an air guidance system having an air guidance housing and an air passage grating fastened thereto, the air passage grating being held on the air guidance housing by means of a snap-lock connection. In order to simplify maintenance of such an air guidance system it is provided according to the invention that the air passage grating carries at least one latch having a snap-in shoulder that can be engaged in a snap-lock seat of the air passage grating and that the air passage grating pivotally accommodates a handle in a bearing seat, said handle disengaging the latch from the snap-lock seat when set from the locking position to the unlocking position.

Abstract: The invention relates to a heating device for installation in a switchgear cabinet, having a support and a heating body, wherein the support replaceably accommodates the heating body in a holder. Simple and secure mounting of the heating body on the support is achieved in that the holder has a contact surface to which limiting elements are attached, in that the limiting elements immobilize the heating body in a form-fitting manner transversely to the contact surface plane, and in that one or a plurality of locking elements are provided in the region of the holder, which immobilize the heating body in a form-fitting manner perpendicularly to the contact surface.

Abstract: The invention relates to a control cabinet monitoring device, comprising a control device which is connected via a field bus to various sensors and/or actuators for monitoring and controlling various control cabinet functions, such as climate control, moisture control and access control. Flexible adaptation possibilities for different applications of control cabinets are offered in that at least one part of the sensors and/or actuators are direct connection sensors and/or direct connection actuators, each having a dedicated bus coupling circuit and being coupled by same to the field bus, and the control device has an initialization unit or can be connected to such a unit, via which the direct connection sensors and/or the direct connection actuators can be initialized before startup and automatically addressed and are subsequently connected via the control device for the exchange of data for operating purposes on the basis of individually allocated addresses.

Abstract: A base or a mounting frame for an electrical enclosure or a rack, includes mounting pieces which are arranged, as corner pieces, in the corner regions of a rectangle or square that extends in an x-y plane. The mounting pieces are produced in a respective shaping process and include first and second mounting faces which lie outside with respect to the rectangle or square, which extend in the x direction and in the y direction at a right angle thereto and which extend in a space direction z at a right angle to the x-y plane. Sections of a system of covers are brought into contact with the mounting faces, where the covers having lateral covers with cover walls that are flat on the exterior and that have reinforcing ribs extending longitudinally on the interior, and are fastened to receiving structures of the mounting pieces by connecting structure.

Abstract: The invention relates to a filter unit for a switchgear cabinet, comprising a filter housing having an air passage that can be covered by an air passage grating at least to some extent. To allow such a filter unit to be maintenanced easily, it provided according to the invention that the air passage grating is hinged indirectly or directly to the filter housing and can be adjusted between a closed position and an opened maintenance position. The filter housing has a retainer which positively blocks a catch of the air passage grating in the maintenance position.

Abstract: The invention relates to a combination cable and air channel for air conditioning an electrical enclosure, comprising an air channel and a cable channel which adjoins the air channel and which is led parallel to the air channel. A first longitudinal face of the air channel has at least one opening, and a longitudinal face of the cable channel manner. The invention further relates to a corresponding electrical enclosure.

Abstract: The invention relates to a switch cabinet with a cooling apparatus which has a first closed coolant circuit and a second closed coolant circuit separated fluidically from the first coolant circuit, the first coolant circuit having a refrigerating machine or a cold water set and the second coolant circuit having a heat pipe arrangement.