Abstract: A method for detecting an arc fault in AC circuits. The method includes monitoring disturbances in an AC voltage signal by analyzing multi-dimensional energy points. A voltage signal is captured and the zero-crossing, minimum peak, and maximum peak are identified. Arcing signatures between the maximum and minimum peaks of the captured AC voltage signal are analyzed to detect an arc fault.

Abstract: The present invention refers to a combined device for electrical protection against transient overvoltages and monitoring of an electrical installation, of those used in installations with alternating single-phase or multi-phase current, or direct current, of those formed by cartridges plugged in to a fixed base or formed by a monoblock, both types of devices comprising one or more components for overvoltage protection in each plug-in cartridge or in the monoblock, characterised in that it comprises monitoring means configured so that they continuously measure and process one or several parameters related to the state of the electrical installation and the protective device itself, and connected to said monitoring means a series of indication means configured to indicate one or a combination of output parameters are comprised.

Abstract: An electrical connector for establishing an electrical connection between two flatly overlapping current conducting elements,

Abstract: A method for detecting an arc fault in AC circuits. The method includes monitoring disturbances in an AC voltage signal by analyzing multi-dimensional energy points. A voltage signal is captured and the zero-crossing, minimum peak, and maximum peak are identified. Arcing signatures between the maximum and minimum peaks of the captured AC voltage signal are analyzed to detect an arc fault.

Abstract: An arc suppressor fixable to a fusible element to suppress electrical arcs and prevent the spread of electric arc “burn-back.” The arc suppressor includes first and second inner members comprised of pre-cured silicone rubber, and first and second outer members comprised of an arc suppressing material (e.g., melamine). The inner and outer members form a sandwich around a portion of the fusible element, wherein the first inner member is located adjacent to a first surface of the fusible element and the second inner member is located adjacent to an opposing second surface of the fusible element. The first outer member is located adjacent to the first inner member and the second outer member is located adjacent to the second inner member. Mechanical fasteners tightly engage together the first and second inner members, the fusible element, and the first and second outer members.

Abstract: A printed circuit board (PCB) via fuse including a non-conductive substrate having a pair of terminal conductors, a plurality of jumper conductors and one or more through-hole vias that electrically connect the terminal conductors and jumper conductors. The through-hole vias function as the fuse element of the PCB via fuse.

Abstract: A medium voltage controllable fuse that provides fast activation in response to both low current and high current faults, and at load currents in response to an external condition detected by an external sensing device. The controllable fuse includes a high-current fault interrupting section, a low-current fault interrupting section, and a trigger element responsive to a fuse controller.

Abstract: An electric fuse, having a first fusible element and a disconnect section electrically connected in series to the first fusible element. The disconnect section is comprised of a first stationary contact, a second stationary contact and a movable contact movable from a first position electrically connecting the first and second stationary contacts to form a conductive path through the disconnect section to a second position electrically separating the first and second stationary contacts from each other and terminating the conductive path through the disconnect section. A retaining element holds the movable contact in the first position, the retaining element operable to release the movable contact from the first position when activated by an electrical (actuation) signal from an external source.

Abstract: An arc suppressor fixable to a fusible element to suppress electrical arcs and prevent the spread of electric arc “burn-back.” The arc suppressor includes first and second inner members comprised of pre-cured silicone rubber, and first and second outer members comprised of an arc suppressing material (e.g., melamine). The inner and outer members form a sandwich around a portion of the fusible element, wherein the first inner member is located adjacent to a first surface of the fusible element and the second inner member is located adjacent to an opposing second surface of the fusible element. The first outer member is located adjacent to the first inner member and the second outer member is located adjacent to the second inner member. Mechanical fasteners tightly engage together the first and second inner members, the fusible element, and the first and second outer members.

Abstract: A medium voltage controllable fuse that provides fast activation in response to both low current and high current faults, and at load currents in response to an external condition detected by an external sensing device. The controllable fuse includes a high-current fault interrupting section, a low-current fault interrupting section, and a trigger element responsive to a fuse controller.

Abstract: An electric fuse, having a first fusible element and a disconnect section electrically connected in series to the first fusible element. The disconnect section is comprised of a first stationary contact, a second stationary contact and a movable contact movable from a first position electrically connecting the first and second stationary contacts to form a conductive path through the disconnect section to a second position electrically separating the first and second stationary contacts from each other and terminating the conductive path through the disconnect section. A retaining element holds the movable contact in the first position, the retaining element operable to release the movable contact from the first position when activated by an electrical (actuation) signal from an external source.

Abstract: A fault current limiter (FCL) for limiting a fault current in a power line during a fault condition. The FCL includes a magnetic coupling circuit for monitoring current in the power line through magnetic coupling; a sensing circuit for sensing the current in the power line and providing a signal indicative of the sensed current; a control circuit receiving the signal indicative of the sensed current in the power line and determining whether the sensed current indicates that the fault condition exists; and high and low impedance paths that are connected in parallel. The high impedance path includes a discharging impedance circuit for limiting the fault current. The low impedance path includes a reactor circuit and a switching unit having an ON state for conducting current through the low impedance path and an OFF state for conducting current through the high impedance path.

Abstract: A voltage suppression device for suppressing voltage surges in an electrical circuit having a voltage sensitive assembly comprised of a plurality of tubular sections within a tubular casing.

Abstract: A surge protection device that includes varistors to absorb surge currents and protect a load from an overvoltage condition. The surge protection device includes a combination of switching elements and diodes. The surge protection device includes a basic cell design that can be easily adapted for higher voltage applications and/or higher discharge current applications and/or higher energy applications by parallel and/or series combinations of the basic cell design. Operation of the device minimizes fatigue to the varistors, thereby extending their useful life. The surge protection device achieves a better ratio of MOV clamping voltage rating versus MOV maximum continuous AC voltage rating, as compared with a conventional MOV installed alone.

Abstract: A terminal unit having a bus bar assembly, a lug assembly, and one or more circuit protection devices attached to the bus bar assembly. The bus bar assembly includes a bus bar and a mounting unit for holding the bus bar and providing a structure for attaching circuit protection devices to the bus bar assembly. The bus bar is made of an electrically conductive material, while mounting unit is made of an electrically non-conductive (insulating) material, such as a plastic, thereby providing a “touch safe” enclosure.

Abstract: A voltage suppression device for suppressing voltage surges in an electrical circuit having a voltage sensitive element within a tubular casing.