Abstract: In a unit apparatus in which units each equipped with a device are disposed in multiple stages and are attached to a housing, the unit apparatus includes: a device-protecting cover which is disposed on the front surface side of the unit and is formed by bending an upper part or a lower part thereof to protect the device; and a unit frame body having a unit base which is disposed in lapped relation on one of the bent upper part surface or the bent lower part surface of the device-protecting cover. The device-protecting cover and the unit frame body constitute a unit chamber; and the units are disposed in multiple stages in said housing, whereby the other of the bent upper part surface or the bent lower part surface of said bent device-protecting cover is shielded.

Abstract: A switch control apparatus for electric plants includes a box-like body which is adapted to be anchored to a fixed o movable part of an electric plant and has a closing panel with at least one passage therethrough, at least one contact unit which is accommodated in the box-like body at the passage and is adapted to be electrically connected to at least one respective electric circuit of the plant for selective open/close control thereof, at least one actuator which is adapted to interact with the contact unit for the latter to ensure selective opening/closing of the respective circuits, an anchor system for anchoring the contact unit to the actuator. The anchor system includes a container member which is adapted to enclose and contain the contact unit and to be anchored to the closing panel in the box-like body for stably securing the contact unit on the actuator.

Abstract: A control device, includes a switch (2) with a rotary control rod (20) having a diametrical slot (21) which extends in a plane of reference (P), a molded plastic knob (3) which includes a housing receiving the control rod, the housing including two flexible fingers (31, 32) which are diametrically opposed and provided so as to be resilient radially inward, and two fixed fingers (33, 34) which are diametrically opposed and are connected together via a connecting wall (35) which extends along the plane (P), the connecting wall (35) being received in the diametric slot without any play in order to immobilize the knob in relation to the control rod in a direction (Y) perpendicular to the plane (P), the two flexible fingers holding the knob along the axis (A) by friction or by mechanical or spring-assisted blocking.

Abstract: An electromagnetic switch includes a pair of fixed contacts fixed in a contact housing case with a predetermined distance therebetween; a movable contact disposed in the contact housing case to contact to and separate from the pair of fixed contacts; and an electromagnet unit causing the movable contact to contact to and separate from the pair of fixed contacts. The electromagnet unit has a magnetic yoke enclosing an exciting coil, a movable plunger disposed to move through a through hole provided in the magnetic yoke and having a contact pole surface facing the contact pole surface of the magnetic yoke, and a linking shaft linking the movable plunger and the movable contact. The contact pole surface of the movable plunger includes a circular protruding portion having a width narrower than that of a surface facing the magnetic yoke for increasing a magnetic flux density.

Abstract: A modular electrical switch device including: a cut-off unit including unitary cut-off units; an actuating unit including an actuating module of the unitary cut-off units; a removable electrical control module including an adaptive connection mechanism configured to interconnect with an actuating coil of an electromagnetic actuator when the removable module is positioned on the actuating module; a quick attachment mechanism allowing the removable attachment of the actuating unit onto the cut-off unit and including a coupling hook configured to attach and hold the cut-off unit to the actuating unit, and to engage with an actuating device of a unitary cut-off unit.

Abstract: Equipment including at least one plug-in unit and a body device for receiving the plug-in unit is presented. The plug-in unit includes a mechanical structure (108) enabling the plug-in unit to be locked in its operating position with respect to the body device with a fastening element (141) that can be, for example, a fastening screw. The plug-in unit further includes a sensor circuit (111) having first electrical properties when the fastening element is in the position locking the plug-in unit in the operating position and otherwise different electrical properties. The equipment includes a monitoring circuit (112) for generating a signal indicative of a difference between the prevailing electrical properties of the sensor circuit and the first electrical properties, the signal being indicative also of correctness of the installation of the plug-in unit. Thus, the correct installation of the plug-in unit can be electrically indicated and monitored.

Abstract: An electrical enclosure includes at least one circuit breaker compartment and a cover mounted thereon. The cover includes an opening receptive of at least one circuit breaker. A gasket extends about at least a portion of the opening. The gasket includes an inner seal assembly and an outer seal assembly. The outer seal assembly is positioned to engage the at least one circuit breaker when the cover is in a closed position. The inner seal assembly is movable between a non-deployed configuration spaced from the at least one circuit breaker and a deployed configuration engaged with the at least one circuit breaker. The inner seal assembly is responsive to a pressure wave in the at least one circuit breaker compartment to move from the non-deployed configuration to the deployed configuration and substantially prevent out gassing through the opening in the cover.

Abstract: A circuit breaker includes: a housing; a stator accommodated in the housing and connected to a terminal unit; a mover selectively brought into contact with the stator; an opening and closing unit manipulating the mover such that the mover is selectively brought into contact with the stator; and an insulating cover provided in the housing and shielding the mover and the stator from the exterior of the housing, wherein the housing or the insulating cover is made by molding an electrical insulating material.

Abstract: A group riding problem warning system allows an individual participating in a group ride to communicate an indication of a problem to each other rider. The system includes a plurality of warning units. Each warning unit comprises a processor positioned in a housing. A respective transceiver is positioned in each housing and communicatively coupled to the processor. A respective actuator is coupled to each housing and operationally coupled to the processor wherein the transceiver transmits a signal to the warning units upon manipulation of the actuator. A respective indicator is coupled to each housing and operationally coupled to the processor wherein the indicator is activated upon the transceiver receiving the signal transmitted from one of the warning units. Each of a plurality of connectors is coupled to an associated warning unit for coupling to a handlebar such that the indicator is visible to a user.

Abstract: An electronic device according to the present invention comprises a main body including a pair of body chassis, a pair of cover panels disposed to cover the front face and the back face of the main body, a switch unit disposed on the side part of the main body, an operation button which is held between the pair of cover panels and has a pusher projecting therefrom, a housing recess which is formed on at least one of the body chassis and recessed on a joint surface with the other body chassis to form a housing chamber for the switch unit, a through hole penetrating the one body chassis from the side face toward the housing recess, and a bag-like waterproof packing member which is attached to the through hole and recessed toward the switch unit to house the pusher of the operation button.

Abstract: An electrical chamber is disclosed herein. The electrical chamber can include at least one wall forming a cavity, where the at least one wall includes a first end and an inner surface. The electrical chamber can also include a first isolation zone disposed on the inner surface at a first distance from the first end, where the first isolation zone is formed by a first bridge, a first underhang, and a first isolation zone inner surface, where the first bridge protrudes inward toward the cavity from the inner surface, and where the first underhang extends from a distal end of the first bridge. The cavity can be configured to receive at least one electrical conductor. The cavity and the first isolation zone can be configured to receive a potting compound.

Abstract: A shelter for protecting a portable electrical inlet/outlet (PEIO) includes a base and a cover. In some examples, the base includes a platform to support a body of the PEIO, and the platform is configured to segregate the PEIO body from water that may accumulate. In some examples, the cover configured to mate with the base to substantially enclose the platform. Upon being inserted into the shelter, the PEIO may be protected from unwanted elements, such as rain, snow, unintended contact by humans or animals, or the like.

Abstract: A vacuum interrupter has a housing with at least a first metal flange through which a first connection pin extends into the vacuum interrupter in a vacuum-tight manner to a first contact. The housing has at least one insulating-material housing region formed by a disc-like insulator. A second connection pin extends into the vacuum interrupter in a vacuum-tight manner to a second contact. The vacuum interrupter can be produced in a cost-effective manner with a compact construction. There is also described a switch pole for a switching device having a vacuum interrupter.

Abstract: A rotary switch module includes a first stationary contact, a second stationary contact, and a movable contact for making an electrical connection between the first stationary contact and the second stationary contact. A rotary actuator is provided for rotating the movable contact, the rotary actuator having on its surface a first indication indicating an open position of the switch, and a second indication indicating a closed position of the switch. A first window indicates the first indication, and a second window separate from the first window indicates the second indication.

Abstract: A built-in intelligent circuit breaker with an automatic closing function, including a box body and a bearing plate. Inside the box body is provided a circuit breaker actuating mechanism, a wire inlet end, and a wire outlet end. The circuit breaker actuating mechanism is triggered by a poke rod positioned in the box body. The bearing plate is positioned in the box body and combined with an electrical operating mechanism. The electrical operating mechanism is provided with an execution end, and the execution end is connected with the poke rod, such that the circuit breaker actuating mechanism is triggered by the poke rod to realize the on/off of the circuit breaker during the operation of the electrical operating mechanism under the control of an automatic closing control unit.

Abstract: An apparatus and method are disclosed for creating an integrated access door and switch actuator. The integrated access door and switch actuator are created from a single composite material. The composite material is flexible to allow movement, but is also durable to provide a protective covering. The integrated access door and switch actuator include a hinge, which allows the access door to move to an open and closed position while the switch actuator is stationary in a fixed position.

Abstract: A retaining insert coupleable to a base assembly configured to operatively support a primary circuit breaker and a pair of opposing circuit breakers that define a recess is provided. The retaining insert includes a base portion configured to be disposed between the primary circuit breaker and the pair of opposing circuit breakers, the base portion configured to be operatively coupled to the base assembly. The retaining insert also includes retaining portion extending from the base portion into the recess, the retaining portion configured to retain the pair of opposing circuit breakers.

Abstract: A device has a housing with a top part that accommodates one or more pressable keys forming the user-interface of the device. Each specific key has a specific keycap. The top part is formed from a harder plastic element and a softer rubber layer in a two-shot injection molding process. The harder plastic element has one or more openings occupied by the softer rubber layer. The harder plastic element has a specific pin positioned in a specific hole of the softer rubber layer. The specific keycap has a bottom face with a specific protruding sleeve configured for engaging with the specific pin. The bottom face of the specific key and an area at a top face of the softer rubber layer have complimentarily shaped profiles configured for accurately orienting the keycap relative to the top part.

Abstract: A molded case circuit breaker, includes: a case; a power side terminal portion and a load side terminal portion formed at two sides of the case; a mounter installed at the terminal portion with a structure to enclose a terminal connector connected to the terminal portion, wherein the mounter includes: a mounting surface for mounting the terminal connector; insulation surfaces extending from two side edges of the mounting surface, and spaced from each other; and a cover surface having an opening, and formed on outer side surfaces of the insulation surfaces so as to cross the insulation surfaces and the mounting surface. Under such configuration, a regulated insulation distance can be obtained, and the terminal connector can be supported more stably.

Abstract: An electrical switching apparatus includes a housing having an interior and an opening, separable contacts, and an operating mechanism structured to open and close the separable contacts. The operating mechanism includes an operating handle extending from the interior of the housing and through the opening of the housing. A dampening member is disposed on the operating handle. The dampening member is structured to engage the housing at the opening thereof when the operating handle moves to at least one of an “ON” position and a “RESET” or “OFF” position.

Abstract: A link disconnect box enables easy field retrofitting of network protectors. The link disconnect box has an outer casing that defines a cavity with a front face opening and top and bottom bus bar openings. Top and bottom terminals seal the top and bottom bus bar openings. The bottom terminal is configured to connect to an existing terminal of the network protector. A removable face plate seals shut the front face opening. Top and bottom bus bars electrically connect to the top and bottom terminals, extending through the respective top and bottom bus bar openings towards each other, with an air gap between them within the cavity. An electrical link, which can be bolted closed, connects and disconnects the top and bottom bus bars by electrically bridging the air gap.

Abstract: A switch includes: a case including a bottom portion and a side wall; a fixed terminal provided on the bottom portion of the case; a supporting member provided in the case; a movable contact strip supported by the supporting member so as to be pivotable in a vertical direction above the fixed terminal; a resilient member provided between the side wall of the case and the movable contact strip, and configured to urge one end portion of the movable contact strip obliquely upward; and a pressing member provided above the resilient member. The movable contact strip pivots and an opened-closed state between the movable contact strip and the fixed terminal is switched by pressing a center portion of the resilient member downward by the pressing member.

Abstract: A click module which gives a feeling of click when an operation knob which is tiltably and pivotally supported on a casing of an operation switch is tiltably operated has a click face on which a crest portion or a valley portion is formed, a click element which slides on the click face, and a resilient member which biases the click element to a click face side. The click module is detachably mounted on the casing. The click element and the click face slide relative to each other in an interlocking manner with a tilting operation of the operation knob.

Abstract: An actuator system for operating a switch is described herein. The actuator system can include a shaft of a handle assembly. The shaft couples to a handle and a male coupling element and has a number of positions. Further, a coupling body of a switch assembly can be positioned in the number of positions. The coupling body engages the switch and has a female coupling element, which has a slotted portion that receives the male coupling element and an angled terminus that aligns the shaft to a first position as the shaft couples to the coupling body. The slotted portion receives and engages the male coupling element when the shaft is coupled to the coupling body. The slotted portion prevents the male coupling element from disengaging when the coupling body is in a second position, and disengages the male coupling element when the coupling body is in the first position.

Abstract: A push switch comprising: a switch disposed on a seat; a cylindrical case that accommodates the seat and the switch; and a soft button comprising a side peripheral wall mounted on top of the case, and an upper operating wall, wherein the switch comprises a main portion and an operating portion that projects up from the main portion; the upper operating wall comprises a pressing portion that presses the operating portion; the seat comprises a base on which the switch is placed, a cover that is positioned around the main portion, and an upper wall that is positioned on the upper portion of the cover and covers the switch; the upper wall comprises a through-hole in a position corresponding to the operating portion; and the operating portion and the pressing portion face through the through-hole.

Abstract: A multi-instruction switch for increasing electrical insulation includes a housing, a common pin and a switching pin set. The housing has an accommodating space, a conductive elastic plate disposed in the accommodating space, and a support rack disposed in the accommodating space and comprising a limiting track. The switching pin set, penetrating through the housing to extend into the accommodating space, comprises a first pin and a second pin disposed on the support rack. The first pin comprises a contact section located in the limiting track: The second pin comprises a trigger section located in the limiting track. The limiting track has an insulation space between the trigger section and the contact section. Thus, carbon residue generated during a switching process of the multi-instruction switch is not accumulated between the contact section and the trigger section due to the insulation space.

Abstract: A circuit breaker is disclosed which includes a plurality of fixed contacts and a plurality of corresponding movable contacts. An actuating shaft is operatively connected to and actuates the plurality of movable contacts to couple with/separate from the corresponding fixed contacts. A supporting device for the actuating shaft can be movably connected to a wall of the circuit breaker, and the actuating shaft can be operatively coupled to the supporting device to rotate around a rotation axis relative to the wall of the circuit breaker and the supporting device itself. The circuit breaker can include an adjustment device for adjusting at least the position of the actuating shaft relative to the wall.

Abstract: A load center featuring a two-piece dielectric barrier that securely retains a plug-on neutral rail and methods of assembling the same. The barrier includes a shield and a base having a protrusion that cooperates with fingers of the shield to securely retain the conductor in the load center. The shield is installed over the base and rests on hooks protruding from the base. This creates a distance between the protrusion and the fingers to allow the conductor to be inserted through a gap between the fingers along the conductor's skinny edge. The conductor rotates 90 degrees until it rests on the protrusion. The base and shield are snapped together, causing the hooks of the base to attach to the shield. At the same time, the fingers of the base move downward to rest against the conductor so that it is sandwiched securely between the protrusion and the fingers.

Abstract: A switching device for an electrically driven vehicle, in particular a track vehicle, has a switch unit that is provided for respectively connecting and disconnecting a vehicle drive unit to and from an electrical supply line carrying high voltage and has at least two switch contacts. A drive unit is provided for driving a relative movement of the switch contacts with respect to one another. A housing unit receives the switch unit and the drive unit. The housing unit contains a support for supporting at least the switch unit. In order to provide a generic switch device for which a compact construction can be achieved, the switch unit is arranged in a lying position relative to the support.

Abstract: A switching device, wherein the switching device has a switch cabinet, which has a switch cabinet housing, a switching apparatus that is attached in the switch cabinet, and an external module. The external module is attached to the switch cabinet housing and connected to the switching apparatus. The external module also comprises a display element and/or an operating element. The display element is visible from outside of the switch cabinet housing, and the operating element can be operated from outside of the switch cabinet housing.

Abstract: An electronic device in which a waterproof structure is formed without hindering a lever operation to a lever switch is provided. A device main body has a housing member in which an opening is provided to house a switch main body, and a cover member that is engaged to the housing member to form at least a part of the front surface of the device main body, and the device main body has an elastic sheet arranged at a rear surface side of the cover member to cover the opening of the housing member, having a shape extending to a position overlapping with engaging surfaces between the housing member and the cover member, and having an outer edge portion interposed between the engaging surfaces of the housing member and the cover member, and a bottomed cylindrical portion that projects from a front surface of the elastic sheet.

Abstract: A switch structure connectable with both bare lead and flat-head terminal lead. The switch structure includes a main body formed with at least one cavity. A retainer member and a conductive metal member are arranged in the cavity for pressing the terminal lead into electrical connection with the conductive metal member. A reciprocally movable carrier body is assembled with the retainer member. The carrier body has an arm assembled with an elastic member. A restriction body is disposed in the cavity. The restriction body is formed with a chamber for receiving the arm and the elastic member of the carrier body. The restriction body restricts the moving direction or distance of the carrier body to increase the structural strength of the switch structure and enhance the lead locking ability of the switch structure.

Abstract: A plug-on load center featuring snap-in or snap-on neutral rails that are retained securely in the load center on or between a dielectric barrier without requiring any fasteners and assembled by installing the dielectric components and neutral rail along the same direction orthogonal to a rear wall of an enclosure that houses the load center. The snap-in configurations feature dielectric barriers with fingers that create a snap-fit connection between the neutral rail and a shield member. The neutral rail is forced between the fingers, which separate and then snap back to their original position once the neutral rail is fully seated in the dielectric barrier. The snap-on configurations feature a neutral rail that is snapped onto the dielectric barrier and retained in the load without any fasteners. The barrier can include retention members that snap-fit into corresponding features of the neutral rail when it is installed onto the barrier.

Abstract: A current breaker case including a polycarbonate resin composition that includes a polycarbonate-polyorganosiloxane copolymer and has a viscosity-average molecular weight of 18000 to 25000.

Abstract: A switching mechanism includes a housing, an actuator retained within the housing, and an electrical switching apparatus. The actuator includes an actuation element retained by the housing, where at least a portion of the actuation element is positioned for receiving an actuation load, and a plunger substantially in contact with the actuation element and operable to translate when an actuation load is applied to the actuation element. A sealing element placed around a second cylindrical portion of the plunger contacts inner surfaces of the housing to provide a seal between a first end and second end of the housing. The actuator also includes a spring operable to apply a force to resist translation of the plunger. An electrical switching apparatus is retained by the second end of the housing.

Abstract: An electrical switching apparatus includes a housing having an interior and an opening, separable contacts, and an operating mechanism structured to open and close the separable contacts. The operating mechanism includes an operating handle extending from the interior of the housing and through the opening of the housing. A dampening member is disposed on the operating handle. The dampening member is structured to engage the housing at the opening thereof when the operating handle moves to at least one of an “ON” position and a “RESET” or “OFF” position.

Abstract: A circuit breaker is described herein that provides a ready visual and haptic indicator of prior use. The circuit breaker comprises a breaker body comprising insulative material. The circuit breaker further comprises a first mounting hole and a second mounting hole, the mounting holes having an inner circumferential dimension presenting a passage and adapted for slidable receipt of a power source. An interrupter is in communication with the first mounting hole and the second mounting hole, with the interrupter operable to terminate electrical flow outside configured parameters. An insert comprises a lip, an arm, a neck, and a tab, the lip being fixed to the breaker body and a first end of an arm. The arm's angularly orientation and length is configured for selective placement of said tab relative to said passage of said mounting hole. The neck is composed of deformable material and joined to second end of said arm. The tab is joined to the neck and coaxially aligned with the passage.

Abstract: Provided is a portable terminal including a switch button member having binding rings extending from both end portions thereof, respectively, and a case member having a seating groove on an outer circumferential surface of a side portion thereof, in which the button member is disposed on the seating groove and the binding rings are inserted into an inner side of the case member, respectively, so as to bind the switch button to said case member.

Abstract: A Medium Voltage circuit breaker which comprises a pole assembly having, for each phase, an interruption chamber housing a first fixed contact and a second movable contact reciprocally couplable/uncouplable between an open and close position; the Medium Voltage circuit breaker further comprises an actuator to actuate the opening and closing operation of said circuit breaker and an insulating base frame supporting said pole assembly and said actuator.

Abstract: A push switch includes a switch contact part for carrying out electrical connection by pressing, a case having a wall part on a periphery thereof and accommodating the switch contact part in a concave portion surrounded by the wall part, and a protective sheet covering the concave portion. The protective sheet and at least a part of an upper surface of the wall part of the case are welded together as a first welding place.

Abstract: A latch assembly is provided for securing a switch operator to a contact block. The latch assembly includes a collar designed to retain the switch operator in the latch assembly. The latch assembly also includes a housing having one or more apertures for receiving fasteners to secure the contact block to the latch assembly. The collar is displaceable within the housing between a locked position that secures the switch operator and an unlocked position that permits disengagement of the switch operator from the collar. When the collar is in the locked position, corresponding apertures in the collar align with the one or more apertures in the housing, permitting the fasteners to be inserted through the collar apertures. Insertion of the fasteners through the collar apertures secures the collar in the locked position, thereby impeding unintentional disconnection of the switch operator from the latch assembly.

Abstract: A position indicator for a circuit breaker is provided. A circuit breaker housing assembly body has an alignment surface. The position indicator includes an indicator member having an alignment surface and an elongated spacer member. The indicator member is movably coupled to the circuit breaker housing assembly adjacent a terminal screw with the spacer member generally aligned with the terminal screw. The indicator member is structured to move between a first position, wherein the alignment surface is not aligned with the housing assembly body alignment surface, and a second position, wherein the alignment surface is aligned with the housing assembly body alignment surface. The spacer member engages the terminal screw and, if the terminal screw is in a terminal screw first position, the spacer member prevents the indicator member from moving into the indicator member second position.

Abstract: An electric switch is disclosed including an at least two-part housing including a first housing part, a second housing part connected to the first housing part and including at least one pole cartridge which is enclosed by the two-part housing and is preassembled in the second housing part. In at least one embodiment, the first housing part is connected to the pole cartridge with the aid of at least one fastening device.

Abstract: A switching apparatus for fastening to carrier rails in switching systems or the like, has a housing in which a switching unit and a device, which is formed on the underside of the housing, for attaching and locking onto a carrier rail. The device comprises a cut-out adapted to the profile of the carrier rail and is provided with an element which can be displaced with respect to the cut-out and is disposed in an aperture of the housing. The displaceable element is a tongue integrally formed on the underside of the housing by means of at least two ribs. The ribs extend in parallel with one another and are integrally formed at one end on the housing, whereas the tongue is integrally formed at the other end of the ribs.

Abstract: A device is disclosed including a removable cover of a housing of an electrical switch and a handle. In at least one embodiment, the handle, by way of its position, switches the electrical switch between different states. Further, the handle is connected to the housing and the handle includes a contour which is embodied, at least in one position of the handle, to interact with the cover for locking the removable cover.

Abstract: A busplug enclosure includes a body member includes a plurality of wall members that collectively define an interior chamber having an opening. The body member includes a line portion and a load portion. A cover assembly is mounted to the body member across the opening. The cover assembly includes a first cover member spanning the load portion and a second cover member spanning the line portion. A handle operating mechanism is mounted to the cover assembly. The handle operating mechanism includes a handle member configured to rotate about an axis extending through the cover assembly, a cam member and a slider member. The handle member is operatively coupled to the cam member and the slider member and configured and disposed to move between a first position and a second position.

Abstract: A mounting plate is disclosed for supporting a circuit breaker accessory part. In an embodiment, the mounting plate includes a holding device, configured to hold the mounting plate on a wall of a housing of a circuit breaker and a fastening device, configured to fasten the circuit breaker accessory part to the mounting plate.

Abstract: A switch has a manipulator that is supported by a housing and swung on one side and the other side, a power switch mechanism that brings contact portions of a movable piece and a fixed terminal into contact with each other when the manipulator is swung onto one side, the movable piece and the fixed terminal being disposed opposite each other in the housing, a returning spring that biases the manipulator in a swing manipulation direction when the manipulator is swung onto the other side, and a power retaining and releasing mechanism that includes a retaining portion and a releasing portion, the retaining portion regulating a restoring force of the returning spring according to the swing manipulation of the manipulator onto one side to retain a contact state of the contact portions of the movable piece and the fixed terminal.

Abstract: A molding process is performed by molds such that a primarily molded body 12 mounted with a detecting element 11 for detecting a vehicle condition is subjected to a secondary molding process, and that a hollow portion 19 within a connector housing portion 15 to be formed by the secondary molding process is penetrated to the face area of the primarily molded body 12 corresponding to the position of the detecting element 11.

Abstract: A Medium Voltage Circuit Breaker (CB) comprising an electronic protection and control unit having: a base, fixed to the CB, comprising a main body having fixing means for fixing to the CB, a first side of said main body comprising a confined space including connections to the CB and internal accessories thereof, a second side of said main body comprising a plurality of first power and/or signal connection means; a removable unit comprising a casing, a first part of said casing hosting one or more Intelligent Electronic Devices, a second part of said casing being removably coupled to said base and comprising a plurality of second power and/or signal connection means connected to said first power and/or signal connection means.