Abstract: An apparatus and method for preventing the miswiring of a protection device. The protection device includes line terminals and load terminals. The protection device further includes a latching mechanism, adapted to move between a closed state which establishes electrical contact between said line and load terminals, and an open state which prevents electrical contact between said line and load terminals; and an initial reset prevention mechanism, adapted to prevent said latching mechanism from being set in said closed state until power is applied to said line terminals.

Abstract: An electrical connector includes a housing having a plug receiving cavity with an open end for receiving a plug and with an inner end spaced from the open end, and having a forward chamber outside of the cavity and adjacent the open end. A mounting circuit board is in the housing adjacent the inner end. A plurality of pairs of electrical jack contacts have mounting ends engaging the mounting circuit board, plug contacting portions extending through the cavity from the mounting end toward the open end, and free ends extending from the contacting portion into the forward chamber. A compensation circuit board is mounted in the forward chamber of the housing outside of the plug receiving cavity, and has a compensation circuit with conductive pads. The free ends of the jack contacts engage the conductive pads. A spring in the forward chamber biases the compensation circuit board towards the free ends of the jack contacts.

Abstract: A connector for a communications system concentrates crosstalk in the front of a plug housing. The plug housing has front and rear ends. An internal chamber opens on the rear end and is defined by housing walls. A plurality of slots extend through one of the housing walls adjacent the front end and into the internal chamber. A plurality of contacts are mounted in the slots for movement between retracted positions spaced from the internal chamber and inserted positions extending into the internal chamber. An insert assembly has at least one insert member disposed adjacent at least one of the plurality of contacts. The insert assembly is made of a higher dielectric material than the plug housing.

Abstract: A self testing fault detector having a line side and a load side and a conductive path there between. The apparatus includes a solenoid, which is adapted to move a plurality of contacts disposed in the conductive path from a first position to a second position when the self testing device is powered from the line side; and a processor, which is adapted to energize the solenoid using a first switch and maintain said solenoid in the energized state using a second switch.

Abstract: An electrical surge arrester includes an arrester block stack with a plurality of cylindrical surge arrester components arranged substantially coaxially to form a cylindrical stack of components having a longitudinal axis. First and second electrical conductive terminals are disposed at each end of the block stack and electrically coupled to the components. A spacer is disposed between each of the terminals and the plurality of cylindrical surge arrester components. A crimp pin is disposed in each of the metal terminals to plastically deform the terminals to compress the block stack. Rubber sheds can be directly molded around the device.

Abstract: A compensating advanced feature patch panel that can include removable modular or fixed electronic components located directly on the patch panel which are separately or in combination capable of providing advanced features such as device detection and power insertion. The patch panel provides communications between an insulation displacement connector (IDC) at a PD/User end, and any standard interface type using unshielded twisted pair cables, such as an RJ45 connector at a switch end at performance levels of at least category 3, 5, 6 e, 6 and/or higher (e.g. 6 e or 7) and equivalent performance levels by compensating for the active electronics used in providing advanced features. Compensation is achieved in part through the separation and isolation of active and communication circuit elements.

Abstract: A test system and method having a test channel and an additional channel, and wherein the ratio of amplitude and phase between the interference current through the device under test and the interference signal on the additional channel are determined. The system further applies a voltage at or near line frequency to the device under test, and then continuously subtracts the additional interference signal from the current signal through the device under test. In doing so, the system and method allows accurate measurements of the real and reactive power of an impedance at or very close to the line frequency.

Abstract: A compensating advanced feature patch panel that can include removable modular or fixed electronic components located directly on the patch panel which are separately or in combination capable of providing advanced features such as device detection and power insertion. The patch panel provides communications between an insulation displacement connector (IDC) at a PD/User end, and any standard interface type using unshielded twisted pair cables, such as an RJ45 connector at a switch end at performance levels of at least category 3, 5, 5e, 6 and/or higher (e.g. 6e or 7) and equivalent performance levels by compensating for the active electronics used in providing advanced features. Compensation is achieved in part through the separation and isolation of active and communication circuit elements.

Abstract: An electrical connector is provided that protects the electrical connector and associated components from harsh mechanical, electrical and environmental requirements. A jack is received by a jack housing, and a plug is received by a plug housing. The jack is adapted to receive the plug. A first seal member is positioned between the plug housing and the jack housing to form a seal therebetween when the jack and the plug are connected. A coupling member is attached to the plug housing and is adapted to receive the jack housing. A spring member is positioned between the coupling member and the plug housing to compress the first seal member between the jack housing and the plug housing.

Abstract: A wire connecting unit for an electrical connector for communication and data transmission systems includes a circuit board with a free and a near end and having four pairs of contacts mounted in a cantilever manner. The wire connecting unit has specific contact configurations that reduce crosstalk, attenuation, propagation delay, and other electrical and magnetic properties that interfere with communication and data transmission. In one embodiment, a first row of contacts extends generally upwardly and backwardly from the free end of the printed circuit board toward the near end, and a second row of contacts placed further from the free end of the printed circuit board than the first row of contacts extends generally upwardly and backwardly from the free end toward the near end.

Abstract: An electrical connector assembly includes a jack and a plug. The jack has a cavity for receiving the plug, a stop member and latch stop. The plug has a plug body and a resilient latch arm with an arm and an abutment. The latch stop is spaced from the stop member by a jack nominal dimension within a jack tolerance. The plug has a free end spaced from the arm abutment by a plug nominal dimension within a plug tolerance. The difference between the jack nominal dimension and the plug nominal dimension is not greater than the sum of the jack tolerance and the plug tolerance.

Abstract: A method of connecting two raceways, comprising the steps of joining respective ends of first and second raceways at a first junction area so that the ends of the first and second raceways engage and form a miter joint at the first junction area, coupling a first cover fitting over the first junction area so that a portion of the first cover fitting engages each end, respectively, of the first and second raceways, joining respective ends of third and fourth raceways at a second junction area so that the ends of the third and fourth raceways are spaced from one another at the second junction area with a curved base disposed therebetween, and coupling a second cover fitting over the second junction area so that a portion of the second cover fitting engages each end of the third and fourth raceways, respectively.

Abstract: An electrical assembly is constructed for mounting to an electrical box or other support surface. The electrical assembly includes a non-metallic body that supports an electrical device such as an electrical receptacle that is surrounded by a non-metallic collar. A metal sleeve surrounds the collar such that the sleeve is electrically insulated from the electrical device by the collar. The sleeve includes a coupling member such as external threads for mating with complementing threads of a mating electrical device to provide a secure coupling to obtain a watertight rating.