Abstract: An adapter for a base housing to which suspension hooks are attached, is accessible for the insertion of connecting contacts to connect contact rails with bus bars. A pre-assembled unit including the contact support, a spring element and a connecting contact is snapped into a snap-in receiver void of the base housing in the area of the base housing suspension hook and makes definite connections between the bus bar, the connecting contact and the contact rail.

Abstract: A connection device allows for mounting a control panel in a manner such that the panel projects from the front lower edge of a control apparatus. According to the invention, optimum adjustment of the control panel relative to the front of the control apparatus is achieved in that the connection devices take the form of angle plates which are assembled from two leg parts and can be set and secured in a plurality of angular positions about an axis aligned parallel with the lower edge of the control apparatus.

Abstract: A rack for a switching cabinet which can be enclosed by side walls, at least one door and a cover and comprises a lower and upper frame which can be connected by frame profiles running vertically. The upper frame has vertical and horizontal struts running horizontally. The vertical and lateral struts include channels where water that runs off from the cover can be collected and drained. Water can then be drained off from the corner areas of the upper frame in a controlled manner if the outlet channels of adjacent vertical and horizontal struts are brought together and fed to a flume of the vertical frame piece.

Abstract: An improvement to the lock elements of a filter ventilator that is engaged in an opening in a fastening plate in such a manner that a housing part with an outer cross section that corresponds to the cross section of the opening includes a stop flange that limits insertion of a filter on the fastening plate and lock elements arranged on the outside of the housing part wherein the spring-like elements each have a free end attached to the housing part such that the free end is oriented toward a support surface on the rear side of the stop flange, the ends of the lock elements include a plurality of lock stages oriented in a stepped arrangement so as to form a locating section substantially perpendicular to the support surface and a lock section that is substantially parallel to the support surface where the lock sections include spaces of equal width and the locating sections are sized for varying thicknesses of fastening plates, and the lock stage nearest the support surface includes a space with respect to the

Abstract: A support for busbars of a busbar system, which can be fixed in place on a fastening surface and which forms a receptacle which is adapted to a width and a thickness of the busbar. A later attachment to the pre-positioned busbar system is made possible due to correspondingly divided supports, if the support has two L-shaped receiving elements, whose legs, aligned parallel with the fastening surface, determine the width of the receptacle, and which have on front ends facing each other dovetailed strips and dovetailed grooves aligned with each other, which extend in a longitudinal direction of the busbar to be inserted into the receptacle. The legs of the receiving elements are oriented perpendicularly with respect to the fastening surface and determine the height of the receptacle. The facing sides of the two receiving elements have projecting support strips, which can be inserted into longitudinal grooves of the busbar, to be placed into the receptacle.

Abstract: A support arm system with a wall connector element, horizontal and vertical support arms, angle brackets and joint elements, and a free end on which a control device is attached with an articulated joint, so that the free end is rotatably limited and can be fixed in place. Vibrations in the wall on which the support arm system is fastened can be isolated from the control device in a simple manner because a housing, which has two housing elements, is connected with the articulated joint element of the articulated joint facing the control device, and because a connecting element is housed, elastically supported horizontally and vertically by cushioning elements, in the housing, and the connecting element is connected with the control device.

Abstract: The invention relates to a cooler which can be fitted on the cover of a control box and connected thereto via an inlet aperture. The rain and dustproofing is improved by the invention in that an air inlet and outlet are fitted in the top of the cooler housing away from the control box, a cover component is connected to the top of the cooler housing at a distance therefrom, projects on all sides of the cooler housing and forms around it a downwardly open ventilation grille and is divided by partitions in the cover component into at least two chambers connected to the air inlet and outlet.

Abstract: A closure for a switchgear cabinet door, machine case or the like, having a safety device. A lock is attached to the switchgear cabinet door, machine case or the like with a first locking element, and a second locking element is attached to the door frame, machine case frame or the like. Both locking elements can be brought into and out of functional connection with each other under the control of an electric signal. Additional locking of the closure can be simply achieved with commercially available locks because the lock has a turnbuckle, which can be rotated by 90.degree., as the first locking element, and an electromagnet is attached to the door frame or the machine case frame, whereby a locking member as the second locking element can be displaced into and out of the pivot range of the turnbuckle.

Abstract: The invention relates to a filtering device with a filter housing which can accept a filter mat, is covered with a lamella grid on the outlet side and is fitted in an aperture in a mounting wall. RF screening is attained without altering the structure of the filtering device in that the surface of the filter housing is electrically conductive and inserted in the aperture in the mounting plate via an electrically conductive contact frame. The contact frame is electrically connected to the filter housing and the aperture in the mounting plate and there is an electrically conductive screening grid inserted or mounted in the filter housing or between the latter and a fan which can be linked thereto.

Abstract: A device for fastening a support rail on frame legs and mounting panels of a switchgear cabinet. The frame legs have two fastening sides which extend vertically with respect to each other and respectively have a row of fastening holes. Each mounting panel has a row of fastening holes and a folded support strip in an area of a lateral edge. The support rail has on both ends fastening elements which are used for connecting a frame leg or a mounting panel. Assembly of the support rail is considerably simplified and improved by the design of the ends of the support rail and by the use of clamping plates with clamping screws.

Abstract: A device for attaching busbars of square or rectangular cross section on a support rail using electrically non-conducting support elements, which can be connected with the support rail and form a busbar receptacle adapted to the cross section of the busbar. With a simple fastener, assembly is considerably simplified because two post-shaped supports per busbar can be attached as support elements on the support rail, wherein spacing between the supports is matched to the width of the busbar and a height is matched to the thickness of the busbar. A base plate is arranged between the two supports, which insulates the busbar receptacle against the support rail and which is captively held between the holders. The ends of the supports facing away from the support rail can be closed by a strip.

Abstract: A cooler which can be fitted on a rear wall or a side wall or a door of a switching cabinet and can be connected thereto via an intake and an inlet aperture of an internal circuit. According to the invention, rain and dustproofing is improved because alongside a central ventilation shaft open at the top, the cooler housing has vertical ventilation chambers open at the top as part of an external circuit hermetically separated from the internal circuit, the top of the switching cabinet and cooler housing is covered by a roofing component spaced therefrom which projects on all sides beyond the control box and the cooler housing and leaves a peripheral ventilation slot opening downwards. The roofing component is divided by two partitions into three chambers which communicate with the ventilation shaft and both ventilation chambers in the cooler housing.

Abstract: A rack for a switch cabinet includes rack members and corner members with connecting projections thereon insertable into connecting receptacles on the rack members. Each rack member, symmetrical about a diagonal plane therealong, is in the form of multiply-curved, open hollow profile sections which form a pair of the connecting receptacles to receive the connecting projections extending from the corner member.

Abstract: A switchgear cabinet with a cabinet body and a cover, wherein the cover projects with lateral shoulders past the lateral walls of the cabinet body, which extend in a direction of a cabinet depth of the cabinet body. Joining another switchgear cabinet adjacent a first switchgear cabinet is possible with a relatively small cost, if the lateral walls are embodied as separate elements and can be interchangeably connected with the cover or the cabinet body.

Abstract: The invention relates to a device for connecting conductors devices to a busbar of a busbar system in which the busbar has an n-agonal cross-section (n.gtoreq.3) with longitudinal undercut acceptor grooves in its outer sides. A simple type of connection is provided in that the acceptor grooves are T-shaped, mating electrically conductive inserts extending over part of the length of the busbar can be fitted into the undercut rectangular cross-section parts of the groves and the inserts have connectors projecting from the section to which the conductors can be directly connected or devices can be fitted by ways of connecting contacts.