Abstract: A water-resistant switching device has an elastomeric body overmoulded to one part of the casing. The elastomeric body has a rib which co-operates with a hooked flange portion to define a space for receiving a hooked flange of another part of the casing to provide a watertight seal.

Abstract: A power supply unit controller for a rack enclosure in which a plurality of devices communicate via a backplane is disclosed. The controller reads at least one signal indicative of an output supply level being provided to the backplane by a power supply unit associated with the power supply unit controller and stores at least one value associated with a respective one of the at least one signal. The controller communicatwa the at least one value to one of the devices; and receives power for the power supply unit controller from the backplane.

Abstract: An equipment carrier for electric installation equipment which is connectable, such as by bus bars, with a mounting support for the equipment carrier that includes an adapter lower portion that is connectable with the mounting support and an adapter upper portion, that serves for the reception of at least one installation equipment whereby the adapter lower and upper portions are formed as separate, connectable components as well as an adapter lower portion of a defined construction size being connectable with adapter upper portions of differing sizes.

Abstract: The present invention provides a power distribution system with a split section panelboard that provides two interior sections. Each section is supplied power from a separate power source. A common bus bridges the two sections. Remotely-operated circuit breakers for both the sections are connected to the common bus. A power interface unit converts power from one of the power sources to provide low voltage power for the circuit breaker motors and a control unit. The control unit in the panelboard controls the operation of the circuit breakers of both the sections.

Abstract: A connector module for overcurrent protection devices uses a printed circuit board substrate as a support surface for line and load busbar members and auxiliary signal clip connectors disposed on one side of the substrate. Passageways in the substrate enable male current plugs to extend through the substrate to mate with sockets disposed in the busbars. Additional passageways enable auxiliary contact terminals to extend through the substrate. Clip connectors disposed on the substrate are used to make electrical contact to the auxiliary terminals. In a preferred embodiment, the sockets and clips are shaped and dimensioned to mate with the current and alarm contact terminals of a plug-in circuit breaker.

Abstract: A panelboard or switchboard enclosure 10 for a plurality of electrical distribution components 34 includes a face panel 14 with an opening 26 formed in a central portion thereof. A filler plate 12 extends across the opening 26 and is secured to the face panel 14. The face panel 14 is secured to the frame of a box assembly or cabinet 16 by fasteners 30. Releasing fasteners 30 allows the face panel 14 and all filler plates to be removed. A first end 50 of the filler plate 12 is pivotally secured to the face panel 14 by a hinge 36, and a second end 54 is releasably secured to the face panel 14 by a fastener 38. Individual filler plates can be opened by releasing the fastener 38 and pivoting the filler plate 12 about the hinge 36 to reveal the electrical distribution component(s) 34 beneath that filler plate 12.

Abstract: A modular surge suppression system for a traffic cabinet. The system comprising a surge suppression module and a modular adapter connected to the circuitry in the traffic cabinet. The modular adapter being configured to connect with the surge suppression module.

Abstract: A control panel for electronic equipment that satisfies the requirements of hermeticity, clearness of indication and operability and yet allows a cost reduction. A sheet made of a commercially available light-transmitting thermoplastic synthetic resin material is used as a substrate. Sheet recesses are formed on the sheet so that each print layer formed on the surface of the sheet is located on the inner side of the bottom of a sheet recess. The sheet recesses are filled with a synthetic resin material to form pushbuttons. A contact surface of a case cover and a contact surface of a pushbutton outer skin are kept in close contact with each other during injection molding. Therefore, there is no possibility of the resin material flowing between the contact surfaces. It is unnecessary to insert a mold member into the clearance between each pushbutton and the associated opening in the case cover. Because the clearance can be minimized, it becomes easy to achieve a size reduction and so forth.

Abstract: An electric load center having a basepan having a surface with a modular extension mounting foot extending from a lower end wall of a circuit breaker support rail for receiving a modular extension basepan, the modular extension mounting foot having a slot for receiving a flexible snap hook of the modular extension basepan to secure the modular extension basepan to the basepan.

Abstract: A circuit breaker mounting assembly comprises an enclosure for holding at least one circuit breaker, with the circuit breaker being mounted within said enclosure; a terminal block mounted within the enclosure at a location remote from the circuit breaker, the terminal block including a plurality of input connections and a plurality of output connections; a plurality of control wires extending from the circuit breaker to the terminal block; and a mounting bracket for positioning the terminal block in a first position within the enclosure and for permitting the terminal block to be moved to a second location outside of the enclosure.

Abstract: A plurality of sub-modules are constituted by connecting a plurality of electronic units among electronic units for an instrument panel to a common control unit. A control unit for each sub-module is connected to a common instrument panel harness to permit multiple communication among the control units.

Abstract: A circuit breaker lighting panelboard is adapted for both top and bottom feed connections with no field modification requirements. The panelboard interior accepts a variety of branch circuit breaker mounting arrangements and the mounting rails are interconnected by steel straps to reduce shipment damage.

Abstract: A power transfer device adapted for interconnection with the electrical system of a building includes a cabinet, a set of switches mounted to the cabinet, and a first set of wires for connecting the switches to an electrical distribution panel associated with the building electrical system. The power transfer device includes a terminal compartment associated with the cabinet, a set of power input terminals located within the terminal compartment, and a cover removably connected to the cabinet for alternatively preventing and permitting access to the terminal compartment. The cover is provided with an optional power input and meter arrangement adapted to be interconnected with the power input terminals for selectively supplying and measuring levels of power provided from a source of auxiliary power connected to the power input terminals.

Abstract: A first surface of a basepan of molded plastic for an electric load center includes a plurality of integrally formed fasteners for securing electrical components such as bus bars, neutral bars, and neutral tie bars to the basepan. Each fastener is formed in the absence of any core through the basepan from a second surface obverse to the first. Each integrally formed fastener has a support portion which projects away from the basepan first surface and a flexural portion supported by the support portion. The flexural portion has a first outwardly facing surface inclined with respect to the basepan first surface at an angle that facilitates elastic deformation of the flexural portion, but not the support portion upon application of a bar to the basepan. The flexural portion also has a second inwardly facing surface arranged at an angle with respect to the basepan first surface that facilitates fixed retention of the bar despite any reasonable variation in the thickness of the bar.

Abstract: Output-motor assembly comprising output elements assembled side by side on at least one socket (S), each element comprising switching devices (1, 3, 40) connected to corresponding connectors (50, 51, 52) on a printed circuit placed in the socket, the said connectors being connected to an input side connector (6) in the circuit fitted with groups of connection pins (D1-D8, C1-C8, R1-R8). The input side connector (6) comprises pins used for switching devices of socket (S) connected in a pin order corresponding to the order of the locations of elements on the socket, and pins useable for switching devices in at least one adjacent socket (S). The printed circuit (C) comprises an output side connector (7) with groups of connection pins identical to the groups on the input side connector (6), the useable pins on the input side connector (6) being connected to the same number of the first connection pins on the output side connector (7), in the same order.

Abstract: The present invention relates to an arrangement for connecting one or more circuit breakers (7) directly to a distribution unit (10) for supplying power to radio base stations and for charging the batteries of such stations. As a result of mutually separating bottom circuit breaker connectors (8) and upper circuit breaker connectors in a power bar (9) constructed in accordance with the invention, the circuit breakers can be connected directly without requiring the presence of a circuit breaker holder to this end, therewith reducing the amount of space required for establishing such connections with respect to earlier known techniques.

Abstract: A circuit breaker mounting arrangement for use in a device such as a transfer switch includes a mounting member adapted for securement to the transfer switch. The circuit breaker includes a head portion having a reset member, and a rearwardly extending body portion which terminates in a rear end wall from which a pair of contact prongs extend. A mounting member is provided for each circuit breaker, and includes an internal recess or cavity adapted to receive the circuit breaker body portion. The mounting member further includes an end wall which in part defines the recess, and a pair of engagement members are mounted to the end wall. The engagement members are configured to receive the circuit breaker prongs when the circuit breaker is inserted into the passage of the mounting member, for establishing an electrical connection between the circuit breaker prongs and the engagement members.

Abstract: A panelboard/switchboard assembly for accommodating bolt-on modules, plug-in modules and lugs. The panelboard/switchboard includes vertical, edge forward bus bars having a plurality of openings formed therein. The edge forward alignment allows plug-in modules to be mounted to the bus bars. The openings in the bus bars receive bolts for mounting straps to the bus bars and for mounting lugs to the bus bars. The openings have a shape having at least one linear element and receive a bolt having an anti-rotation portion with a similar shape. The interference between the opening and the anti-rotation portion of the bolt prevents the straps, and the modules connected to the straps, from rotating.

Abstract: A support and electrical power supply device comprises a mounting plate supporting an electrical switchgear apparatus and housing branch conductors extending perpendicularly to a busbar. The branch conductors present identical lengths. The connection strips are arranged close to the opposite terminal parts of the branch conductors and comprise orifices arranged symmetrically with respect to the horizontal midplane of the mounting plate to enable fitting of the connection parts with the lineside terminals or the loadside terminals of the switchgear apparatus. Two connection possibilities of the switchgear apparatus are possible at the time of installation to achieve a lineside or a loadside power supply. The same mounting plate can also be used for supply of a single switchgear apparatus or of two switchgear apparatuses with opposite feeders.

Abstract: Robbery of a vehicle-mount electric apparatus can be prevented by only driving an operation panel to turn it upside down. The operation panel is disposed in front of the main body of the vehicle-mount audio apparatus, and is moved while being rotated about its rotary shaft. The operation panel moves between first and second states. In the first state, the normally used surface of the operation panel is used as the front surface of the apparatus, and in the second state, the surface other than the normally used surface is used as the front surface. When the operation panel takes generally a horizontal state during the motion of the operation panel 5, the rotary shaft thereof is positioned at one end of the motion range of the operation panel.

Abstract: An attachment for attaching a main circuit breaker in an electrical panel has a uniquely constructed hold-down for the circuit breaker and a headed screw for fastening the hold-down in the panel. The hold-down is a non-electrically conductive part, such as a plastic. A circuit-breaker-engaging projection for engaging a circuit breaker projects from a first side of the hold-down body and a gripping tab projects from a second side of the body opposite the first side. A shank of the headed screw passes through a through-hole in the hold-down body to thread into a hole in a base pan. The screw is tightened against the hold-down body to hold it, and in turn the main circuit breaker, in place. In such an installed condition, the main circuit breaker cannot be removed easily from the panel unless the screw is intentionally unscrewed by a tool sufficiently to allow movement of the hold-down to a position that enables the main circuit breaker to be removed.

Abstract: An electric load center having a basepan having a surface with a modular extension mounting foot extending from a lower end wall of a circuit breaker support rail for receiving a modular extension basepan, the mounting foot having a trapezoidal shaped slot for engagement by a correspondingly shaped ramp of the modular extension basepan, the modular extension mounting foot further having a slot for receiving a flexible snap hook of the modular extension basepan to secure the modular extension basepan to the basepan.

Abstract: The invention takes as its departure point a housing (10) for receiving electric drives (16, 18, 20), in particular garage-door drives, and/or the controls (24, 26) thereof, which housing exhibits at least two housing parts (12, 14). Provision is made on the housing parts for a latching device (34, 52, 68, 110) and guide elements (108, 112) for the reliable connection of the housing parts (12, 14) and for latching-in and retaining functional components (22, 28, 78) and/or circuit boards (24, 26) for the controls. Consequently, a structure with few individual parts and simple mounting and demounting is achieved.

Abstract: An enclosure for an external terminal of a circuit breaker on an electrical panelboard, which includes a body and a cover. The body defines an aperture for inserting an electrical load conductor and is securable adjacent a circuit breaker. The cover is mounted to the body for movement between a first position and a second position. In the first position the terminal is exposed. In the second position the body, the circuit breaker and the cover jointly enclose the terminal.

Abstract: An arrangement for attaching electrical inductive components to a terminal block of a mounting base utilizes interlocking male and female plug-in connections. In instances where the electrical inductive components are measuring transformers, the arrangement accommodates higher electric currents in the area of several amperes seen in the primary winding because a galvanic connection is established simultaneously when the mechanical connection is made. Accordingly, the wiring of the primary circuit is made rapidly and without the possibility of faulty coupling. As the number of electrical inductive components increases, the arrangement disclosed provides compact construction.

Abstract: A bonding screw is pre-assembled in a distribution panel in a non-bonding position that does not bond a neutral bar within the panel enclosure to the enclosure wall. This allows an installer of the panel to select between the option of maintaining the bonding screw in the pre-assembled non-bonding position and the option of positioning the bonding screw from non-bonding position to a bonding position. A basepan is disposed within the enclosure between the neutral bar and the enclosure's back wall. The non-bonding position is defined by the screw shank thread having a threaded engagement with a through-hole in a basepan, the head of the bonding screw being spaced from the neutral bar, and the shank of the bonding screw being spaced from the enclosure's back wall. The bonding position is defined by the head of the electrically conductive part being disposed against the neutral bar and the shank being threaded into an extruded hole in the enclosure's back wall.

Abstract: The present invention provides a dual mode DIN rail latch for an electrical component chassis that provides a tactile feedback warning to the user of the impending snap point placing the latch in the open position. In one embodiment of the present invention, the latch has a locking tab mounted to the chassis for slidable movement. The locking tab has a pair of springs that extend into an opening formed in the locking tab and engage a nub formed as an integral part of the chassis. The springs impinge upon sidewalls of the opening as the locking tab approaches an impending mode change. The impinging action provides tactile feedback to the user of the impending change in mode.

Abstract: An electric distribution panel having a substantially compact and lightweight housing to which a plurality of input receptacles are coupled. A first one of the input receptacles is structured to receive a ground cable coupled thereto, a second one of the input receptacles is structured to receive a neutral cable coupled thereto, and a third, fourth and fifth of the input receptacles are structured to receive a phased current cables in different phases from one another coupled thereto. Further disposed in the housing and removably coupled thereto is a load center having a ground bar coupled with the first input receptacle, a neutral bar coupled with the second input receptacle, and a plurality of circuit breakers through which the phased current from the third, fourth, and fifth input receptacles, which are coupled in conductive communication with the load center, passes to a plurality of output receptacles that are also disposed in conductive communication with the load center.

Abstract: A circuit breaker panelboard enclosure is adapted to receive circuit breaker covers that are attached to the interior or circuit breaker module without requiring attachment screws and the like. The circuit breaker modules within the enclosure are equipped with electrically-insulative extension clips that are received and retained within apertures formed in the circuit breaker covers in press-fit relation. The circuit breaker covers are removed by grasping the ends of the circuit breaker covers and pulling the circuit breaker covers away from the enclosure.

Abstract: A control and panel assembly using a thin dielectric carrier strip upon which a sheet of conductive material is adhesively attached. The conductive sheet is perforated to form an array of spaced parallel discrete conductors. The conductors are initially formed as interconnected by transverse webs which are frangibly removed after attachment to the carrier. Individual stand up connectors are then attached to each of the conductors to form a carrier sub-assembly and the terminals are inserted through slots in a dielectric deck plate. Individual user actuated control components are then plugged directly into the terminals with user actuated shafts or levers extending through deck plate and carrier strip.

Abstract: The invention provides a combination service entrance device which contains a common enclosure, divided by a center barrier into two sections. One houses a watt-hour meter socket and the other houses a panel board containing circuit breakers. The panel board is installed on an elevated mounting pan placed in the circuit breaker section. One side of the mounting panel preferably has a pair of tabs, each of which slides into a separate lance or guide formed in the center barrier. A pair of spaced posts are attached between the side opposite the barrier and the back panel of the enclosure. The length of the posts defines the gap between the back panel and the panel board. An elevated neutral bar is attached to the back panel along and distant from the mounting panel. The panel board remains parallel to and raised from the back panel. The elevated mounting pan provides for routing wires in the circuit breaker section and easier access to the load connections of the circuit breakers compared to prior art devices.

Abstract: An assembly of electrical equipment having devices, such as circuit breakers and contactors grouped in pairs, included on a supporting baseplate. Each pair of devices includes a circuit breaker 40 and a contactor 60 and a baseplate 20 having power pins and control pins that cooperate with respective power and control terminals of the devices. Auxiliary units 50,70 are fixed to one of the devices 40,60 while being connected to control terminals 45,65,66 of the one device. The units 50,70 are connected to a linkage with a bus or a control and command system by plugging units 50,70 into control pins 81,82 of the baseplate 20.

Abstract: A motor starter assembly made up of sub-assemblies each formed from a circuit breaker 40 and a contactor 60 and positioned on a baseplate 20 with which a set of power bars 23 is associated. The baseplate includes a support area 21 for the sub-assemblies and a connection are preferably a bracket 22 that is overhanging in relation to the support area. The baseplate further includes power connection elements and or control connection elements provided on the bracket and the connection area to permit plugging in of the sub-assemblies on the baseplate along an engagement direction Z approximately parallel with the support area and perpendicular to a direction X of a set of bars.

Abstract: A panelboard for power lines and loads includes a housing; a plurality of circuit breakers housed by the housing; and a panelboard controller substantially housed by the housing. Some of the circuit breakers, which switch a circuit from one or more of the power lines to the loads, include remotely controllable actuating circuits for actuating the circuit breakers and switching a circuit from one or more of the power lines to one or more of the loads. The panelboard controller includes a monitoring circuit for monitoring power or energy consumed in the circuits of the circuit breakers and a control circuit for controlling the remotely controllable actuating circuits.

Abstract: A plurality of electrical equipment units have a harness connecting connector, and an instrument panel has a plurality of mounting openings for the equipment units. An assembly housing is arranged in the instrument panel. A wiring harness for the instrument panel has a plurality of self-mating connectors for the equipment units, the self-mating connectors being respectively connected to a flexible flat circuit sheet. The assembly housing has a side wall with a harness receiving recess and has a plurality of connector holders. The harness receiving recess is fixedly mounted with the circuit sheet for the wiring harness, each of the connector holders supporting one of the self-mating connectors. Thus, the insertion of the electrical equipment unit into the mounting opening of the instrument panel causes the connection of the harness connecting connector and the self-mating connector.

Abstract: An electrical distribution center comprises a main bus plate assembly that is sandwiched between upper and lower auxiliary bus plate assemblies of a known type. The main bus plate assembly comprises stamped metal circuit components having bus strips sandwiched between upper and lower insulation plates that are permanently secured together. The stamped metal circuit components have male blade terminals that protrude through slots of the upper and lower insulation plates. The slots have laterally flexible side wall portions that are spread apart by embossments of the stamped metal circuit components to retain these components during the assembly process.

Abstract: Enclosure for housing devices or components of electrical distribution or control and equipped on one of its faces with an enclosure aperture which can be closed and made watertight through a fixed or swiveling door. The door is designed to receive control elements of the devices housed inside the enclosure and has a closing panel (30). The closing panel (30) consists of substantially transparent panel and has mounting plates (70) which are adapted to carry the control elements and which include penetration apertures (75)for these elements, the contour of the penetration apertures forming a cutting template for control element apertures (80) for the closing panel (30)for the passage of the elements through the closing panel.

Abstract: A wiring system for a vehicle instrument panel, which includes a plurality of electronic subassembly components electrically connected to at least one wire, is encapsulated in a plurality of troughs located to the rear of the instrument panel. The troughs extend between the subassembly components, Each trough has a finite length in at least one axial direction with an open side extending substantially along the length, so that the at least one wire may be received within the trough. The at least one wire is connected to at least one of the subassembly components. Wire restraints restrain the wire within at least one trough.

Abstract: A power distribution system utilizing a power distribution circuit board having a front and back side with at least one connector on each side. The connector on the front side is disposed to mate with a selected power supply and the connector on the back side is disposed to mate with a substantially identical power supply. The connector on the back side is rotated 180.degree. so that substantially identical power supplies can be located in close proximity to each other while maintaining required conductor spacing in order to provide an improved power distribution system.

Abstract: An electric load center having a basepan having a surface neutral bar wire guide comprising a wall upwardly extending from the surface member and having semicircular slots extending therethrough at an upper surface for receiving and guiding a return wire into an aperture in the neutral bar.

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: On a rear surface of a cluster bezel, a module circuit body is formed with, for example, an FPC (flexible printed circuit). Thereafter, on the rear surface of the cluster bezel, an instrument board, a right-side switch section, and a left-side switch section are mounted. In this operation, connecting terminals on a base board provided for the instrument board, the right-side switch section, and the left-side switch section are brought into contact with the contact portions of the FPC, so that the meters on the instrument board are electrically connected to the right-side switch section and the left-side switch section.

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 slidable sealing cover assembly for unmetered electrical horizontal bus connections arranged in a customer compartment adjacent to a utility compartment for a panel board arrangement. The sealing cover assembly employs a cover member and a slide member attached to each end of the cover member. The cover assembly is slidably mounted on an existing fixed bus housing for the bus connections. A slotted end of each slide member extends into the utility compartment, and a slidable latching mechanism mounted on a wall of the utility compartment engages the slotted end of each slide member. When the cover member is positioned over the bus connections in the customer compartment, the slidable latching mechanisms are operated to enter the slot on the slotted end of each slide member so that the hinged door to the utility compartment can be closed.

Abstract: Wire barriers for separating the load wiring from the hot components of an electrical distribution panel board are integrally molded from an elastically deformable resin with a tapered elongated member projecting axially from a base member. Attachments for securing the barriers to the backpan of the panel board include at least two hook members having hook fingers projecting laterally outward in divergent directions. In one embodiment, the hook members are formed in opposite sides of the elongated member and spaced from the base so that as the elongated member is inserted through an opening in the backpan from behind, the fingers grip the backpan and hold the barrier in place until the base is clamped between the backpan and back wall of the panel board as the backpan is installed. In another embodiment of the invention, a pair of opposing facing hook members and a third laterally facing hook member project axially from the base member.

Abstract: An electric load center having a basepan having a surface, the surface having a tab with a tapered lower edge and a prong extending from a side edge of the tab for capture by lances found in the enclosure of the load center.

Abstract: A molded electrical circuit assembly is disclosed where the molded electrical circuit assembly comprises a device assembly overlaying at least a portion of a face applique and a backing assembly overlaying at least a portion of the device assembly. The device assembly is retained between the face applique and the backing assembly, and the backing assembly has a window formed proximate to the device assembly. Also included is a molded portion molded generally over the backing assembly and abutting at least a portion of the face applique.

Abstract: An apparatus is provided for securing electronic devices in a vehicle. A ventilation duct is provided beneath the instrument panel for conveying air in the vehicle. The ventilation duct includes an outer surface. An overlay substrate is laid upon and secured against the outer surface or acts as the wall of the duct, and is adapted for carrying electronic devices thereon. This design improves packaging efficiency within the vehicle. This invention can also be applied to other automotive applications such as on door panels, instrument panels and package trays.

Abstract: An apparatus and method of assembling vehicle instrument panel structural and electronic components includes: 1) fabricating an insulative instrument panel base substrate; 2) applying a conductive pattern to the base substrate; and 3) attaching electronic components to the base substrate in electrical communication with the conductive pattern.

Abstract: A panelboard apparatus includes an enclosure; a first plurality of circuit breakers including a remotely controllable solenoid for actuating the circuit breaker and switching a circuit from a power line through a load; a holder for holding in the enclosure up to a second plurality of circuit breakers including the first plurality of circuit breakers; a controller for controlling up to the second plurality of circuit breakers; a printed circuit connection mechanism for connecting up to the second plurality of circuit breakers to the controller in one of a plurality of configurations, including printed circuit boards having a plurality of interfaces for up to the second plurality of circuit breakers; and a switch selection circuit for selecting one of the configurations in order to determine a location in the enclosure of a first one of the second plurality of circuit breakers.