Abstract: A contactor with a rotary actuation system, the contactor including a plurality of switching devices configured to switch a plurality of electrical circuits, a plurality of cam followers each operably coupled to one of the switching devices, wherein each cam follower is configured to actuate a switching device, and a cam mechanism, the cam pivotally attached to a point rotation, the cam having plurality of lobes about its perimeter, the cam in operable communication with each cam follower such that upon rotation of the cam mechanism, each cam follower engages a lobe of the plurality of lobes, it causes each cam follower to actuate the respective switching device. The contactor also includes an actuator connected to the cam, the actuator responsive to a control current and operable to rotate the cam and a controller, the controller operable to supply a control current the actuator.

Abstract: A relay contactor is provided and includes input and output leads, a shaft assembly, an actuator and first and second bearing assemblies. The shaft assembly includes a shaft, a plate disposed on the shaft and an elastic element. The shaft and the plate are movable between an open position at which the plate is displaced from the input and output leads and a closed position at which the plate contacts the input and output leads. The actuator is coupled to the shaft at a first side of the plate and is configured to selectively move the shaft and the plate into the closed position in opposition to bias applied by the elastic element. The first and second bearing assemblies are disposed to movably support the shaft at the first side and at a second side of the plate, respectively.

Abstract: A direct current (DC) overvoltage monitoring and protection device includes an overvoltage sensor operably connected to an electrical power input line. The overvoltage sensor is configured to change state upon detection of a voltage over a preselected threshold. An overvoltage relay is operably connected to the overvoltage sensor. The overvoltage relay includes one or more relay switches configured to move between a first position and a second position when the voltage over the preselected threshold is detected. An independent relay power source is operably connected to the overvoltage relay to provide electrical power to the overvoltage relay, separate from the electrical power being monitored via the electrical power input line.

Abstract: A relay contactor is provided and includes a shaft assembly comprising a plate, which is movable between an open position at which the plate is displaced from leads and a closed position at which the plate contacts the leads and an actuation system configured to selectively move the plate into the closed position. At least one of the shaft assembly and the actuation system is configured such that, as the plate moves into and away from the closed position, a movement of the plate relative to the leads comprises at least a non-linear, rotational or an abnormally linear component.

Abstract: A system includes a mechanical switching device having a first moveable contact operatively connected to selectively contact a first static contact. A second moveable contact is operatively connected to selectively contact a second static contact that is electrically connected in parallel with the first static contact. The first and second moveable contacts are mechanically connected to each other to move between a closed circuit position and an open circuit position. The first moveable contact contacts the first static contact before the second moveable contact contacts the second static contact as the first and second moveable contacts move into the closed circuit position from the open circuit position. The first moveable contact disconnects from the first static contact after the second moveable contact disconnects from the second static contact as the first and second moveable contacts move from the closed circuit position into the open circuit position.

Abstract: An electrical assembly including a first conductor, at least a second conductor parallel and electrically isolated from the first conductor, a component connecting to the first conductor and the second conductor, a cover including fastener slots each configured for receiving a fastener therein configured for securing the cover partially within the component, and including at least two isolation slots each configured for receiving and electrically and mechanically isolating the first conductor and the second conductor from each other and from each fastener, and a base configured to secure and align the cover and the component.

Abstract: An electrical assembly includes a first conductor, a second conductor, and a bus bar. The first conductor is disposed on a terminal block and defines a first conductor opening. The second conductor is spaced apart from the first conductor. The bus bar extends from an electrical component. The bus bar has a first bus bar surface that is arranged to engage the first conductor and a second bus bar surface that is disposed opposite the first bus bar surface. The second bus bar surface is arranged to engage the second conductor. Each of the first bus bar surface and the second bus bar surface extends between an end surface of the bus bar and the electrical component.

Abstract: A contactor with a rotary actuation system, the contactor including a plurality of switching devices configured to switch a plurality of electrical circuits, a plurality of cam followers each operably coupled to one of the switching devices, wherein each cam follower is configured to actuate a switching device, and a cam mechanism, the cam pivotally attached to a point rotation, the cam having plurality of lobes about its perimeter, the cam in operable communication with each cam follower such that upon rotation of the cam mechanism, each cam follower engages a lobe of the plurality of lobes, it causes each cam follower to actuate the respective switching device. The contactor also includes an actuator connected to the cam, the actuator responsive to a control current and operable to rotate the cam and a controller, the controller operable to supply a control current the actuator.

Abstract: A contactor with a rotary actuation system, the contactor including a plurality of switching devices configured to switch a plurality of electrical circuits, a plurality of cam followers each operably coupled to one of the switching devices, wherein each cam follower is configured to actuate a switching device, and a cam mechanism, the cam pivotally attached to a point rotation, the cam having plurality of lobes about its perimeter, the cam in operable communication with each cam follower such that upon rotation of the cam mechanism, each cam follower engages a lobe of the plurality of lobes, it causes each cam follower to actuate the respective switching device. The contactor also includes an actuator connected to the cam, the actuator responsive to a control current and operable to rotate the cam and a controller, the controller operable to supply a control current the actuator.

Abstract: A contactor with a rotary actuation system, the contactor including a plurality of switching devices configured to switch a plurality of electrical circuits, a plurality of cam followers each operably coupled to one of the switching devices, wherein each cam follower is configured to actuate a switching device, and a cam mechanism, the cam pivotally attached to a point rotation, the cam having plurality of lobes about its perimeter, the cam in operable communication with each cam follower such that upon rotation of the cam mechanism, each cam follower engages a lobe of the plurality of lobes, it causes each cam follower to actuate the respective switching device. The contactor also includes an actuator connected to the cam, the actuator responsive to a control current and operable to rotate the cam and a controller, the controller operable to supply a control current the actuator.

Abstract: A relay contactor is provided and includes input and output leads, a shaft assembly, an actuator and first and second bearing assemblies. The shaft assembly includes a shaft, a plate disposed on the shaft and an elastic element. The shaft and the plate are movable between an open position at which the plate is displaced from the input and output leads and a closed position at which the plate contacts the input and output leads. The actuator is coupled to the shaft at a first side of the plate and is configured to selectively move the shaft and the plate into the closed position in opposition to bias applied by the elastic element. The first and second bearing assemblies are disposed to movably support the shaft at the first side and at a second side of the plate, respectively.

Abstract: An electrical assembly includes a first conductor, a second conductor, and a bus bar. The first conductor is disposed on a terminal block and defines a first conductor opening. The second conductor is spaced apart from the first conductor. The bus bar extends from an electrical component. The bus bar has a first bus bar surface that is arranged to engage the first conductor and a second bus bar surface that is disposed opposite the first bus bar surface. The second bus bar surface is arranged to engage the second conductor. Each of the first bus bar surface and the second bus bar surface extends between an end surface of the bus bar and the electrical component.

Abstract: A direct current (DC) overvoltage monitoring and protection device includes an overvoltage sensor operably connected to an electrical power input line. The overvoltage sensor is configured to change state upon detection of a voltage over a preselected threshold. An overvoltage relay is operably connected to the overvoltage sensor. The overvoltage relay includes one or more relay switches configured to move between a first position and a second position when the voltage over the preselected threshold is detected. An independent relay power source is operably connected to the overvoltage relay to provide electrical power to the overvoltage relay, separate from the electrical power being monitored via the electrical power input line.

Abstract: A power connector assembly includes a connector housing and a plurality of receptacles defined in the connector housing. Each of the receptacles defines a keyed interface profile such that each interface profile is adapted to individually couple to a respective feeder connector. Each one of the receptacles has an interface profile different from the other interface profiles. The plurality of receptacles can include a first profiled interface, a second profiled interface and a third profiled interface. Each of the first, second and third profiled interfaces can define a longitudinal connector axis. The number of profile interfaces can be increased by selection of other angle positioned within the housing which prevent incorrect receptacles from be installed (i.e. connected).

Abstract: A wire lug captivation system includes a bolt having a head, a shank adjacent the head and a threaded portion, the shank having a diameter that is smaller than a diameter of the threaded portion. The system also includes a captivation device including an upper portion, a lower portion and a connecting member that joins the upper and lower portions, the captivation device configured to receive a wire lug between the upper portion and the lower portion and including a threaded hole in the upper portion having diameter that is greater than the diameter of the shank.

Abstract: A power connector assembly includes a connector housing and a plurality of receptacles defined in the connector housing. Each of the receptacles defines a keyed interface profile such that each interface profile is adapted to individually couple to a respective feeder connector. Each one of the receptacles has an interface profile different from the other interface profiles. The plurality of receptacles can include a first profiled interface, a second profiled interface and a third profiled interface. Each of the first, second and third profiled interfaces can define a longitudinal connector axis. The number of profile interfaces can be increased by selection of other angle positioned within the housing which prevent incorrect receptacles from be installed (i.e. connected).

Abstract: A fuse assembly includes a bus bar fuse and a clip. The bus bar fuse has a leg with a slotted opening. The clip surrounds a portion of the leg. The clip includes a first side having a threaded through-hole and a second side extending from the first side at an angle with respect to the first side. A third side extends from the second side at an angle with respect to the second side. The third side includes a through-hole. The threaded through-hole of the clip provides for captivation of the fastener within the clip when mounting the fuse assembly to the fuse mounting block assembly.

Abstract: A fuse assembly includes a bus bar fuse and a clip. The bus bar fuse has a leg with a slotted opening. The clip surrounds a portion of the leg. The clip includes a first side having a threaded through-hole and a second side extending from the first side at an angle with respect to the first side. A third side extends from the second side at an angle with respect to the second side. The third side includes a through-hole. The threaded through-hole of the clip provides for captivation of the fastener within the clip when mounting the fuse assembly to the fuse mounting block assembly.

Abstract: A keyed power connection system is disclosed. The keyed power connection system may have connectors and terminal studs. Each connector may have a captive fastener and may have a connector keying portion comprising a keyed aperture forming an opening in and defined by a connector body of the connector and having a keyed connector diameter. The connector may receive and be selectably connected to a terminal stud having a keyed stud diameter. The keyed stud diameter and the keyed connector diameter may correspond to ameliorate the risk of connecting a connector to a mismatched terminal stud. The captive fastener may engage the terminal stud to retain the connector in position relative to the terminal stud.

Abstract: An aircraft power distribution system is disclosed that includes a power distribution box. A generator supplies power to the power distribution box, and a load receives power from the power distribution box. The power distribution box includes a board supporting plug-in pins receiving the power. A contactor is supported by the board to selectively providing power to a secondary power distribution connector supported on the board. The board includes power traces that are run within the board to connect the plug-in pins to the secondary power distribution connector. Protection and secondary power distribution circuitry is also supported by the board and connected to the contactors and/or power traces by control traces. The power and control traces eliminate loose wiring and harnesses.