Abstract: A power panel of an electrical distribution system including a bus arrangement with a plurality of conductive bus bars. At least one electrical accessory is coupled to the plurality of bus bars and a plurality of clip assemblies are coupled to the plurality of bus bars and the at least one electrical assembly to establish an electrical connection there between. The clip assembly for use with the bus stack arrangement includes a metallic clip with a tang and a C-shaped section interconnected with and arranged opposite the tang and a biasing element coupled to the tang.

Abstract: An electrical adapter is disclosed for connecting a connection contact of a circuit breaker with an associated contact piece of an electrical circuit along which the circuit breaker has to be inserted, including a hollow tubular element having a first end portion and a second end portion configured to be electrically connected to a connection contact and a contact piece, respectively, an inner cavity of the hollow tubular element having, at the first end portion, a first frusto-conical shape. A first connector having a hollow deformable body and configured to be accommodated inside the first end portion. A locking body configured to be securely placed along the inner cavity of the hollow tubular element. A second connector including a first connection portion configured to be accommodated inside the first end portion of the hollow tubular element.

Abstract: A movable portion of a vacuum circuit-breaker includes a circular spring sliding on an outer bearing surface in most positions, that is suitable for entering a recess on relaxing in order to define a maximally open position for the vacuum circuit-breaker in which locking is thus provided. The movable portion may be made up of two sections, of which one, made of copper, is a very good electrical conductor, and is directed towards the stationary contact and receives a connection element for connection to an outside electrical circuit; the section may be made of steel in order to promote sliding of the spring without wear.

Abstract: A shuttle board relay is provided that is scalable to a specific pitch or routing density. The shuttle board relay provides a path with different sets of electrical components that allows this via by allowing the integration of components and other types of customization. The shuttle board relay provides a minimally disruptive path to the signal. This minimizes loss and signal distortion, isolation and crosstalk are a function of pitch. Since pitch can be set, grounds included, etc., a design may be fully optimized for low cross talk.

Abstract: In order to reduce the breaking energy of a high-voltage or medium-voltage circuit-breaker, the interrupting chamber (10) contains two contacts (12, 14) mounted to move in opposite directions, and actuated via a single device (20). The two contacts (12, 14) are surrounded by an insulating casing (18) of tubular shape, coupled in fixed manner to the main contact (12). The contacts (12, 14) are actuated by a device having a lever (24) in which each lever arm is coupled to a link, one of the links (32) being secured to the insulating casing (18) and the other link (34) being secured to the second contact (14). The guiding of the drive tube (18) on the main contacts (12b, 14b) makes it possible to improve breaking by keeping clean gas between said main contacts.

Abstract: A terminal structure of a vacuum circuit breaker is capable of effectively radiating heat when conducting electricity.

Abstract: Fixed electrodes 40 and terminals 30 are mounted on a casing main body 21 of a breaker device 10 with bolts 50. Each terminal 30 is firmly fixed between the end surface of a spacer 52 fitted on the bolt 50 and a mount base 24 by a fastening force of the bolt 50, and each fixed electrode 40 is pressed against the terminal 30 by an elastic force of a spring washer 52 fitted around the spacer 51 and is mounted such that it can be inclined by deforming the spring washer 52 by a remaining deformation margin. Accordingly, when the fixed electrode 40 is pushed by the movable electrode 44, the inclinations of the fixed electrodes 40 are automatically adjusted to reduce a sliding resistance which acts between the movable electrode 44 and the fixed electrode 40, thereby facilitating the switching operation.

Abstract: To achieve a small-sized roller contact device having an increased capacity of current flow, the front and rear roller contacts 4a and 4b are arranged such that they face each other with the contact portions 1a and 2a of the first and second fixed contacts 1 and 2 therebetween to bridge-contact the contact portions 1a a and 2a of first and second fixed contacts 1 and 2 from the front and rear sides of the portions of the first and second fixed contacts 1 and 2 which are arranged in parallel to each other. The front and rear roller contacts 4a and 4b are supported by the front and rear roller contact supporting members 5a and 5b, respectively. The driving member 6 extends between the first and second fixed contacts 1 and 2 and supports the front and rear roller contact supporting members 5a and 5b. The springs are installed between the front and rear roller contact supporting members 5a and 5b.

Abstract: A HF-switch includes a contact set which comprises a bifurcated contact piece cooperating with a contact blade. The contact piece includes a pair of contact springs supported at their one end and provided with opposing contact rivets at their other end between which the contact blade is movable within a predetermined tolerance range. The contact rivets are of circular cone shape and are defined by a height which corresponds at least to half the permissible tolerance range of the contact blade and by a base angle .alpha..ltoreq.45.degree..

Abstract: The gas-blast circuit breaker preferably provided for switching medium voltage has a housing (1) filled with insulating gas. In this housing (1), two contact members (7, 8) are arranged which can be moved relative to each other along an axis (6), and a fixed (8) one of which is formed of two half-shells (11, 12) spaced apart from each other along a plane of separation (16). A power terminal (5), arranged transversely to the axis (6), is electrically conductively connected to the fixed contact member (8). This circuit breaker is to be simplified while retaining a reliable current transfer from the power terminal (5) to the fixed contact member (8).

Abstract: In an arc contact system for electrical circuit breakers, in particular of the type using an arc extinguishing fluid, comprising a stationary contact and a movable contact, one of the two arc contacts is formed by a tubular cylindrical body bearing a hollow sleeve of arc resistant material at its end destined to cooperate with the other arc contact; and the other arc contact is formed by a substantial cylindrical rod provided with at least one central longitudinal cut, suitable to render elastically yielding in the radial direction said rod, destined to be inserted inside the tubular cylindrical body of said first arc contact.

Abstract: A female interrupting contact for a current-interrupting unit includes a smoothly contoured, apertured pressure ring which is held in a groove formed in the wall of a bore through a contact body. A spring in the groove maintains the ring to one side of the bore so that the aperture is normally misaligned with the path of a male contact through the bore. When the male contact enters the aperture, it moves the ring against the action of the spring to align the aperture with its path. This alignment effects intimate sliding engagement between the male contact and both the ring and the wall of the bore, one or both of the latter of which are conductive so that a reliable electrical path through the contacts and the interrupting unit is established.

Abstract: The invention concerns a draw-out circuit-breaker having high electrical performances.Each draw-in terminal clamp comprises at least one U-shaped guiding slide operating in conjunction with the edge of the associated contact terminal stab to lock the terminal clamp in the engaged position in a plane perpendicular to the engagement direction. A radiator is fitted inside the insulated enclosure secured to the bell-shaped cover.

Abstract: A bounce- and weld- resistant contact assembly includes a pair of spaced contact plates with facing contacts on their ends. A switch blade is rapidly movable into and out of engagement with the contacts. The contacts are convexities coined into the plates which add no mass to the plates. Thus, the natural frequency of the plates is maximized and the magnitude of oscillation of the plates, when the contacts are rapidly engaged by the blade, is minimized. Legs on leaf springs act against concavities formed in the plates opposite the convexities. The legs conformally nestle in the convexities so that their frictional engagement therewith and the spring force co-act to quickly damp the high frequency, low magnitude oscillations of the plates. The low mass coined contacts also permit close spacing of the plates to maximize magnetic forces thereon due to current flow therethrough. These forces aid the spring and the leg-concavity friction in quickly damping oscillations of the plates.

Abstract: A contact device for an electric switch comprising at least two interconnectable contacts and at least two contact knives movable relative thereto and adapted, in the closed position of the switch, to clamp between themselves at least one of the contacts. The contact knives are enclosed in pairs by iron elements or similar which, when a short-circuit current passes through the contact knives, act as a magnets increasing the contact force.

Abstract: A slide switch having S-shaped movable contact springs which are movably connected to the contact slide, the free legs of the contact springs being provided with contact areas twisted through an angle of at least 1.degree., so that the switch is substantially crackle-free.

Abstract: A stab assembly for a circuit interrupter for use in drawout switchgear characterized by a circuit breaker movable into and out of contact with bus bars and having spaced terminals in substantial alignment with the bus bars, each terminal comprising a base and a pair of flexible contacts disposed on opposite sides of an axis and engageable with opposite sides of a bus bar, the base comprising lateral portions extending from the sides of the axis corresponding to the flexible contacts, a dielectric housing in which the base is pivotally mounted to affect rotation laterally of said axis, and the housing having a projection spaced from each lateral portion for limiting rotation therein.

Abstract: An arcing contact for a high current capacity switch having a pair of switch members in sliding face-to-face engagement is formed from a set of resilient laminations that shunt the switch members as the switch makes on closing or breaks on opening. One end of the set of laminations is mounted on a face of one of the switch members, usually a blade, and the other end of the set of laminations is angled so that the end surfaces or tips bear against a face of the other switch member, usually a termination, when the arcing contact shunts the switch members. While in this position, a deflection of the laminations develops a spring force that urges the tips of the laminations into contact with the termination. The tips are inwardly bevelled with respect to the face of the termination and lie in a common plane so that during electrical connection they are in a substantially parallel relationship with the face of the termination, at substantially the same pressure.

Abstract: A circuit interrupter characterized by a pair of separable contacts one of which is movable with respect to the other, the movable contact being mounted on an elongated conductor and extending through a tubular conductor with an annular space therebetween, an electrically conducting sleeve within the space and being composed of a resilient sheet-metal type material and having a corrugated configuration. The sleeve being disposed in the annular space in a compressed condition such that the outer ridges are in electrical contact with the tubular conductor and the inner ridges are in contact with the elongated conductor, and a body of resilient material between the tubular conductor and each pair of outer ridges of the conducting sleeve.