Abstract: The present invention relates to a main circuit part of a vacuum circuit breaker, and more particularly, to a main circuit part of a vacuum circuit breaker with a temperature sensor. The main circuit part of a vacuum circuit breaker with a self-powered temperature sensor assembly includes: a self-powered temperature sensor module; and a support bracket enclosing and supporting the self-powered temperature sensor module.

Abstract: A switch apparatus includes a housing having an interior chamber for supporting a portion of a shaft body. The shaft body has a portion extending from the housing coupled to a pull knob such that the shaft body and pull knob are selectively located from a first position to a second position. The shaft body further comprises spaced first and second legs having a securing arrangement disposed within a channel formed by the legs, the securing arrangement comprises a restricted region formed about a portion of the legs in the channel and a securing pin fixedly attached to the housing, such that the securing pin engages the restricted region when the shaft body and pull knob transition from the first position to the second position.

Abstract: A switch apparatus includes a housing having an interior chamber for supporting a portion of a shaft body. The shaft body has a portion extending from the housing coupled to a pull knob such that the shaft body and pull knob are selectively located from a first position to a second position. The shaft body further comprises spaced first and second legs having a securing arrangement disposed within a channel formed by the legs, the securing arrangement comprises a restricted region formed about a portion of the legs in the channel and a securing pin fixedly attached to the housing, such that the securing pin engages the restricted region when the shaft body and pull knob transition from the first position to the second position.

Abstract: A movable contact point board provided with contact points is urged in a direction of being away from stationary contact points by return springs each having the same size and the same characteristic, and is arranged as opposed to the stationary contact points. Return springs have the respective ends for supporting locations in the movable contact point board which are away from each other as having the contact points in the movable contact point board therebetween and support heights of the return springs at the stationary side differ with each other by D. When a plunger equipped with a holding portion having a flat surface as a bottom surface presses the movable contact point board, the contact point in the movable contact point board gets in contact with the stationary contact point at an inclined posture.

Abstract: An arc fault circuit breaker includes a panel having a first side and an opposite second side, a housing coupled to the opposite second side of the panel, separable contacts, an operating mechanism structured to open and close the separable contacts, and a trip mechanism cooperating with the operating mechanism to trip open the separable contacts. The trip mechanism includes a test circuit structured to simulate a trip condition to trip open the separable contacts, and a proximity sensor disposed on or within the housing proximate the opposite second side of the panel. The proximity sensor is structured to sense a target to actuate the test circuit when the target is disposed proximate the first side of the panel and opposite the proximity sensor.

Abstract: An electrical switch assembly includes a first pair of busbars, each busbar having a first portion and a second portion, the first portion disposed at an angle with respect to the second portion, and a wedge-shaped assembly configured to be repositionable to form an electrical circuit between the first pair of busbars. Also described herein is a non-destructive testing system including the electrical switch assembly.

Abstract: The present invention is to provide a main circuit terminal assembly for a vacuum circuit breaker, which can prevent temperature increase by increasing a surface area of a main circuit conductive unit, the main circuit terminal assembly for a vacuum circuit breaker which is electrically connected to a vacuum interrupter, including: a clamp electrically connected to a movable unit of the vacuum interrupter, and configured as a pair of conductors so as to support the movable unit by clamping; a heat sink fixed to the clamp that increase a surface area of the clamp; a flexible shunt having one end thereof electrically and mechanically connected to the clamp, and configured as a flexible conductor to allow the movable unit to move; a terminal block electrically and mechanically connected to another end of the flexible shunt, and configured as an electrical conductor; and a contactor unit electrically connected to the terminal block and having a plurality of clip-shaped contactors.

Abstract: A switchgear apparatus is provided in which an impact induced by a close operation is mitigated, featuring space saving and high reliability with low costs. The switchgear apparatus includes a switching unit 3 that is composed of a fixed electrode 1 and a movable electrode 2; a movable shaft 4 that is extended from the movable electrode 2; an operating mechanism 5 that produces driving force and transfers the driving force to the movable shaft 4; a switching-unit holder 6 that holds the switching unit 3 and the movable shaft 4 thereinside; and a holder supporting unit 7 that has a fixing plane so as to fix the switching-unit holder 6 thereonto. The switchgear apparatus is arranged in such a manner that the holder supporting unit 7 serving as the fixing plane is constituted of a plurality of plates layered in the axial direction along the movable shaft 4.

Abstract: To enable reduction of the number of components and weight, improvement of workability, and reduction of the costs, a switch contact structure is disclosed, which comprises a substrate 65, a movable block 73 disposed so as to be movable along the substrate 65, a fixed contact 67 mounted on the substrate 65, and a movable contact mounted on the movable block 73, wherein the movable contact is brought into and out of contact with the fixed contact 67 by the movement of the movable block 73 along the substrate 65, characterized in that the fixed contact 67 is formed of conductive wire material, and in that both ends 99a, 99b of the fixed contact 67 are fixed on the substrate 65.

Abstract: A circuit breaker has a threaded collar fixed on a breaker housing and an approximately cylindrical actuating element displaceably guided in a bore of the threaded collar and partially protruding from the breaker housing for manual push-pull actuation in an advantageous way on the actuating side. In order to seal the circuit breaker, a sealing ring seals an annular gap formed between the wall of the bore and the circumference of the actuating element.

Abstract: To enable reduction of the number of components and weight, improvement of workability, and reduction of the costs, a switch contact structure is disclosed, which comprises a substrate 65, a movable block 73 disposed so as to be movable along the substrate 65, a fixed contact 67 mounted on the substrate 65, and a movable contact mounted on the movable block 73, wherein the movable contact is brought into and out of contact with the fixed contact 67 by the movement of the movable block 73 along the substrate 65, characterized in that the fixed contact 67 is formed of conductive wire material, and in that both ends 99a, 99b of the fixed contact 67 are fixed on the substrate 65.

Abstract: An electrical contact assembly is disclosed comprising a bracket having at least first and second cavities located on opposite ends of the bracket and an opening extending through the bracket between the first and second cavities. A retention member is arranged to be mounted within the bracket opening with a first portion of the retention member extending outward from the first cavity and a second portion of the retention member extending outward from the second cavity. Each first and second portion terminates in a head end. First and second helix-shaped electrical contacts are positioned about a respective retention member first and second portion and are compressively retained between a respective and associated head end and bracket cavity.

Abstract: A safety switch including a spring-loaded tappet axially displaceably disposed in a switch cover; a switching bridge on the tappet; and an actuator above the tappet. An essentially U-shaped element has a center web and a first and second leg. The element is swivellably disposed in the cover in the area of the center web and the first leg of the element engages the tappet. The second leg is situated above the tappet such that when the actuator has moved in, the second leg reaches behind and engages the actuator in a switch-on position and permits a complete pulling-out of the actuator from the cover only in a switch-off position.

Abstract: An electronic switch includes a rigid base, a circuit board supported by the base which includes an aperture therethrough defined, at least in part, by spaced apart conductive terminals of an electrically conductive circuit, a resiliently flexible casing attached to the base and overlying the circuit board, and a plunger attached to the casing and extending therefrom through the circuit board aperture. The plunger includes a conductive portion which is adjacent to the casing, and a non-conductive portion. The casing is resiliently biased so as to normally position the plunger such that the non-conductive portion thereof extends through the circuit board aperture. Depression of the casing, however, places the conductive portion within the aperture and into contact with the spaced apart conductive terminals to close the electrically conductive circuit. The electronic switch may be utilized in connection with, for example, a drowsiness warning device which includes a band securable about a wearer's neck.

Abstract: A low profile, push-pull, jumper switch that relies on movement of an electrically-insulating switch housing to make and break the connection between two contact members mounted on the surface of a PCB or other substrate. The only metal used are the two contact members and a fixed wire in the housing. The wire is forced into contact with the contact members to electrically interconnect them by movement of the housing when placed in its closed-switch position. In a preferred embodiment, the two contact members are identical and are each constituted of a one-piece U-shaped metal member, with the U-bight depending from the housing and configured to be solderable to the PCB pads or through-holes and thus being fixed. The contact members are configured to latch the housing in its open-switch position or closed-switch position. The switch lends itself to SMT applications.

Abstract: A diaphragm for the contact insulating housing of a mechanically operated high voltage switch. The diaphragm has a central portion through which the shaft from the mechanical operating mechanism to the movable contact passes. The walls of the diaphragm about the central portion are mechanically joined or chemically bonded to the shaft. The diaphragm is made of such materials, is dimensioned and configured so that the diaphragm moves with the shaft and prevents relative motion therebetween. The outer rim of the diaphragm is mechanically joined or chemically bonded to the switch housing. The quality of the diaphragm and the seals permits them to withstand the application of the full operating voltage of the switch.

Abstract: Actuator for an electrically operated vehicle door lock has an actuator plunger which is shiftable between first and second positions to lock and unlock the related door latch. The actuator plunger carries a resilient electrical contact element which coacts with one or more fixed contacts on a guide to close one or more respective circuits for operating other parts of the related system and/or signalling the condition of the related lock, such as whether it is locked or unlocked. Preferably the contacts slide into and out of engagement to provide silent operation and self-cleaning wiping action.

Abstract: With push button operated switches having at least one movable and one stationary contact carrier, problems may occur when the push button is not actuated properly and centrally. This problem is overcome by a switch having corresponding annular contacts and concentric guide means.

Abstract: An electrical connector, for example a lampholder comprises an on/off switch mechanism including a push bar. The connector further comprises a locking arrangement including an interlock member which extends to the pushbar and moves into and out of cooperation with an aperture in the pushbar. When a cooperating device, for example a lamp, is inserted into the connector the interlock member moves axially into the lampholder to a position at which the pushbar is free to move between "on" and "off" positions. When no cooperating device is connected, the interlock member prevents movement of the pushbar. The pushbar and the interlock member include respective inclined surfaces arranged such that the pushbar will be moved to the "off" position when a cooperating device is removed from the connector.

Abstract: An electrical contact device has a first connector (1) having a surrounded base portion (3). Radially disposed within the base portion is a plurality of contact members (5) with at least a surface portion of the contact members being in electrical contact with the base portion through, at least in part, flexible, electrical conducting connections (6). Each contact member is in the form of a double-armed lever with a first arm (15) and a second arm (16) carrying the surface portion, and each contact member is pivotable about an intermediate portion (19) between the first arm and the second arm. A second connector (2) has an electrical conductive contact surface (26) and is receivable and movable in the first connector. The second connector is pressable against the first arm, such as to pivot the double-armed lever from an open position where the surface portion does not contact the conductive contact surface to a closed position where the surface portion does contact the conductive contact surface.