Abstract: An enclosure for an electrical distribution panel includes a box having a front opening covered by a front panel having a cut-out portion. An insert is seated in the cut-out portion and includes removable knockout panels for access to circuit breakers mounted in the enclosure. The insert may be provided with a c over which enhances the appearance of the enclosure and provides a waterproof seal. The size of the insert is selected based on the type of circuit breaker to be mounted in the enclosure. By changing the size of the insert, the enclosure can be used with different types of circuit breakers. The enclosure can also be adapted for indoor or outdoor use. The enclosure avoids the disadvantages of conventional enclosures which are designed differently for different types of circuit breakers, and include entirely different components for indoor and outdoor use.

Abstract: An electrical distribution panel interior base assembly includes a base member, brackets secured to the base member and bus bars mounted on the base member. The same type of base member is used to mount different types of conventional circuit breakers. Depending on the type of circuit breaker to be installed in the electrical distribution panel, different types of brackets and bus bars are used in the base assembly. The modular base assembly permits the same distribution panel enclosure to be used for various types of circuit breakers.

Abstract: A center bolt LBOR switch 12 comprising a support ring 12-4 and a center bolt or threaded boss 12-2, and a nut 12-3 for securing the switch 12 to a transformer tank wall is disclosed. The disclosed invention allows a switch or other device to be mounted to the wall of a transformer tank without welding and without distorting the tank wall.

Abstract: An electrical safety barrier for use as a protective device between a hazardous area and a non-hazardous area has a substrate of ceramic material which carries thick film printed resistors and other surface mounted safety components, such as Zener diodes. By using such hybrid circuit technology one can achieve a very slim barrier, reduce the number of soldered connections usually required, and obtain high power density due to the high thermal conductivity of the ceramic. The ceramic substrate is encapsulated within a housing which includes a ground shoe assembly to enable the barrier to be mounted on a rail.

Abstract: A circuit breaker box including a holder base having two wire holder shieldings and pairs of clamping spring plates in the wire holder shieldings, each of the clamping spring plates having a pair of vertical ribs disposed at an inner side, the vertical ribs having a thickness gradually increasing from a bottom side toward a top side; an input wire holder mounted in the first wire holder shielding to hold input lead wires, and a plurality of output wire holders mounted in the second wire holder shielding to hold output lead wires, the input wire holder and output wire holder having pairs of metal contact spring plates respectively inserted into the clamping spring plates of the holder base and stopped between the respective vertical ribs of the respective pairs of clamping spring plates for receiving fuse plugs.

Abstract: A circuit breaker mounting bracket is comprised of a generally upright support member, a base member extending generally perpendicularly from a bottom of the support member, a flange depending from a distal end of the base member at an angle less than 90.degree., and a brace member depending obliquely from the back of the support member. The flange is adapted to be secured to a support surface, such as a deck within an air conditioning or furnace cabinet. The brace member and the flange cooperate to maintain the bracket in a rigid, upright position within the cabinet. The bracket includes a din rail comprising two generally L-shaped flanges integrally formed with the support member, whereby one or more circuit breakers are mountable in a fixed position relative to the bracket. A C-shaped channel is formed on the support member between the L-shaped flanges for receiving two retaining members, which inhibit lateral movement of the circuit breaker(s) mounted on the bracket.

Abstract: The present invention provides a mounting system for circuit breakers in an electrical panelboard assembly. The base and cover forming the circuit breaker casing has an integral foot extending from a bottom side. The foot is angled and has a notch on a side forming an acute angle with the bottom. The panelboard assembly has a bus cover adapted with a opening or opening to receive the foot. This secures the circuit breaker on one end, and a screw into a bus secures the circuit breaker on an opposing end. The bus cover has a rail which engages the notch in the foot. On an opposing side of the foot, a spring engages the foot and forces the foot into the rail. The spring is an integral part of the bus cover and is cantilevered at an angle to the main body of the bus cover. Ledges are formed integrally into the bus cover on opposing sides of the spring. The ledges prevent overstressing the spring while inserting the foot during installation of the circuit breaker.

Abstract: A circuit breaker (1) mountable on a channel section rail (8) with a pair of elongate flanges (9, 10) and secured in position by a mounting clip (17) mounted in an elongate groove (18). The mounting clip (17) is movable along the groove (18) from a disengaged position to an operating rail engaging position with a release head portion (23) of the mounting clip (17) being within the outer boundary of the circuit breaker housing (2).

Abstract: The present invention provides a connector bar for making electrical connections to terminals having a lug body with an externally accessible interior cavity and a binding screw. The connector bar includes an elongated body having two ends and made of electrically conductive material. At least one of the ends having a solid cross-section with a configuration which creates less distortion in the sides of the lug body compared to a round cross-section configuration when the binding screw contacts the end with torque applied for making the pre-determined mechanical and electrical connection. Preferably, the cross-section configuration of the end is defined by a flat top surface larger in width than the contact area of the binding screw, two arcuate sides having an arc value approximately the same as the interior cavity of the lug body, and a flat bottom surface smaller in width than the top surface.

Abstract: An electric power distribution center for use on aircraft comprises a space frame having a first surface defining a plurality of sockets, and a second, generally parallel, surface defining a plurality of connector ports; a plurality of conducting bus bars utilizing a three dimensional routing configuration encapsulated within the space frame; current sensors integrally mounted within the space frame for monitoring the flow of electrical current through the conducting bus bars; and a printed circuit board encapsulated within the space frame for providing electrical circuit pathways within the power distribution center. Further, a plurality of load protection and control devices, seated within the sockets of the first surface, provide a switchable coupling between the bus bars and the printed circuit board to control the distribution of electric power to the individual aircraft loads.

Abstract: The switching apparatus includes a stationary part (10) which is arranged in a switch cabinet and includes electrical power supply terminals (18) and electrical power distribution terminals (19). A moving housing body (20) accommodates a switch mechanism (27) and a disconnecting device for electrically connecting and disconnecting the housing body (20) from the stationary part (10). An additional device with an electrical auxiliary circuit is attached to the housing body (20) and is supplied with electrical power by wiring which is passed from the stationary part (10) to the housing body (20). The wiring includes mutually interacting plug connections (105, 107; 106, 108) which are positioned in the side walls (11) of the stationary part (10) and the side walls (A) of the housing body (20).

Abstract: A universal electrical connector is incorporated into the electric power distribution network of a motor control center to connect the main circuit breaker with the control center vertical bus conductors and the branch circuit breakers. The connector in the form of a single metal casting is configured to connect the main circuit breaker with the control center internal electrical distribution conductors without requiring additional connectors.

Abstract: A circuit breaker has ferrule type line and load terminals which clip on to portions of, respectively, input and output current buses for the breaker to permit the breaker by a mere plug-in action to be fastened to those two buses. The output current bus is provided by an adapter comprising a molded plastic case having at its top a receptacle for an end lug on a cable for distributing current from the breaker to a load, and having at its bottom a cylindrical metallic contact to which the load terminal of the breaker is or may be clipped. A metallic bus strap extends in the case from that contact to terminal means in the receptacle for connecting the upper end of the strap to such lug. The case has formed on the outside thereof a horizontal guideway into which the input current bus may be slid to thereupon be held insulated from, and fixedly fastened with, the output current bus strap in the adapter.

Abstract: A circuit breaker has a line terminal comprising a pair of vertically spaced resilient terminal strips which extend in the transverse horizontal direction out from the breaker's housing to free ends of the strips, and which strips have formed therein near those ends respective bends disposed opposite each other and vertically projecting away from each other to bound opposite sides of a circular cylindrical cavity defined between those strips. A horizontal rail for conducting current is aligned in its lengthwise direction normal to those strips, and the rail has a flange received in the cavity in electromechanical contact with the strips, and also, a web extending in the transverse horizontal direction from the front flange out beyond the terminal to a rear flange for the rail. The shape, size and mass of the rail promote reduction of the temperature generated at the line terminal by the inrush of current carried by the rail in the presence of a short circuit in the load served by the breaker.

Abstract: The present invention provides an interior assembly for an electrical distribution device having at least one bus bar integrally formed with branch stabs for electrically connecting to terminals extending from a plurality of circuit interrupters. The assembly includes a generally planar support base having a front face and back face for mounting bus bars. A cover for the front face and a back shield for the back face of the support base have sufficient size to substantially cover the bus bars. The cover and back shield include means for securing the body to the device so that the position of the cover prevents contact between the bus bar and a person's finger or equipment particularly when an individual circuit interrupter is mounted to the device.