Patent Publication Number: US-11380498-B2

Title: Electrical unit and associated additional functional module

Description:
RELATED APPLICATION 
     This application is a National Phase of PCT/EP2017/067257 filed on Jul. 10, 2017, the entirety of which is incorporated by reference. 
     BACKGROUND 
     Field of the Invention 
     The present invention relates to an electrical apparatus for an electrical installation and to an additional functional module for this electrical apparatus. 
     DESCRIPTION OF RELATED ART 
     Document DE 19 21 571 A1 describes an electrical switch comprising a lighting element connected to the electrical circuit of the electrical switch in order to perform a lighting function. Such an electrical switch only makes it possible to perform a lighting function. This electrical switch therefore does not make it possible to implement more sophisticated functionalities, and is therefore limited. 
     The present invention aims to propose a flexible and customizable solution for an electrical apparatus and to overcome the drawbacks of the prior art. 
     OBJECTS AND SUMMARY 
     The present invention relates to an electrical apparatus for an electrical installation, able and intended to be connected to an electrical grid, comprising at least:
         a primary functional module comprising a first connection pole able and intended to be connected to a first line of the electrical grid, a second connection pole able and intended to be connected to a second line of an electrical circuit of the electrical installation and a third connection pole able and intended to be connected to a third neutral line of the electrical grid,       

     the primary functional module being able and intended to perform a function of interrupting the current between the first connection pole and the second connection pole and comprises a control member such that, in an open position, an electrical circuit between the first connection pole and the second connection pole is open and that, in a closed position, the electrical circuit is closed,
         an additional functional module comprising means for performing at least one function requiring an electric power supply, comprising at least a fourth connection pole and a fifth connection pole that are electrically connected respectively to the first connection pole and to the third connection pole of the primary functional module in order to supply power to the additional functional module,   a reception module comprising at least a first reception area for receiving the primary functional module,       

     which electrical apparatus is characterized in that the reception module comprises a second reception area for receiving the additional functional module, 
     and in that said at least one function of the additional functional module is a function requiring an electric power supply, excluding a lighting function. 
     The invention also relates to an additional functional module for an electrical apparatus as described above, said electrical apparatus comprising a primary functional module and an additional functional module, said additional functional module being characterized in that it corresponds to the additional functional module of said electrical apparatus and comprises at least a fourth connection pole and a fifth connection pole that are able and intended to be electrically connected respectively to the first connection pole and to the second connection pole of the primary functional module of the electrical apparatus, in order to supply power to the additional functional module, and comprises means for performing at least one function requiring an electric power supply, said at least one function of the additional functional module is a function requiring an electric power supply, excluding a lighting function. 
     The invention also relates to an electronic card for an additional functional module as described above, characterized in that the electronic card comprises a measurement sensor and/or display means and/or actuation means and/or electromagnetic wave transmission and/or reception means and/or a transducer and in that it comprises at least first connection means so as to be able and intended to form a removable component of said additional functional module. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       The invention will be better understood by virtue of the following description, which relates to several preferred embodiments that are given by way of non-limiting example and explained with reference to the appended schematic drawings, in which: 
         FIG. 1A  is a perspective plan view of a primary functional module according to the invention, 
         FIG. 1B  is a perspective bottom view of the primary functional module shown in  FIG. 1A , 
         FIG. 1C  is a plan view of the primary functional module shown in  FIG. 1A , 
         FIG. 2A  is a perspective plan view of an additional functional module according to the invention, 
         FIG. 2B  is a perspective bottom view of the additional functional module shown in  FIG. 2A , 
         FIG. 2C  is a perspective view of the detail A shown in  FIG. 2B , 
         FIG. 2D  is a perspective view of a removable electronic card of the additional functional module, 
         FIG. 2E  is a perspective view of the functional module without the removable electronic card, 
         FIG. 3A  is a perspective view of the primary functional module according to the invention shown in  FIGS. 1A to 1C  associated with a support frame of the reception module, 
         FIG. 3B  is a perspective view of the electrical apparatus according to the invention comprising the primary functional module according to the invention shown in  FIGS. 1A to 1C  and the additional functional module shown in  FIGS. 2A to 2E , 
         FIG. 3C  is a perspective view of a cover plate according to the invention, 
         FIG. 3D  is a perspective view of the electrical apparatus shown in  FIG. 3B  and provided with a cover plate shown in  FIG. 3C , 
         FIG. 4  is a view of the electrical apparatus according to the invention, and 
         FIG. 5  is a view of a circuit diagram showing the electrical apparatus in an electrical installation. 
     
    
    
     DETAILED DESCRIPTION 
     The electrical apparatus  1  for an electrical installation ( FIG. 5 ), able and intended to be connected to an electrical grid, comprises at least:
         a primary functional module  2  comprising a first connection pole  3  able and intended to be connected to a first line L of the electrical grid, a second connection pole  4  able and intended to be connected to a second line L 1  of an electrical circuit of the electrical installation and a third connection pole  40  able and intended to be connected to a third neutral line N of the electrical grid ( FIGS. 1B and 5 ),       

     the primary functional module  2  being able and intended to perform a function of interrupting the current between the first connection pole  3  and the second connection pole  4  and comprises a control member  2 ′ such that, in an open position, an electrical circuit between the first connection pole  3  and the second connection pole  4  is open ( FIG. 5 ) and that, in a closed position, the electrical circuit is closed ( FIGS. 1A and 1C ),
         an additional functional module  5  comprising means for performing at least one function requiring an electric power supply, comprising at least a fourth connection pole  6  and a fifth connection pole  7  that are electrically connected respectively to the first connection pole  3  and to the third connection pole  40  of the primary functional module  2  in order to supply power to the additional functional module  5  ( FIGS. 2A to 2E, 3B and 5 ),   a reception module  8  comprising at least a first reception area  9  for receiving the primary functional module  2  ( FIGS. 3A to 4 ).       

     According to the invention, the electrical apparatus  1  is characterized in that the reception module comprises a second reception area  9 ′ for receiving the additional functional module  5  ( FIG. 3A ), 
     and in that said at least one function of the additional functional module  5  is a function requiring an electric power supply, excluding a lighting function. 
     The excluded lighting function is understood to mean a lighting function that is implemented by way of an indicator light able and intended to be turned on both when the control member  2 ′ is in the open position and when the control member  2 ′ is in the closed position. For example, when the primary functional module  2  controls a load  20 , such as lighting, the indicator light is always turned on both when the lighting is not supplied with power and is therefore turned off and when the lighting is supplied with power and is therefore turned on. This type of lighting function excluded from the invention is most often used to locate and identify an electrical apparatus  1  in darkness in part of a building (not shown), such as a stairwell (not shown). 
     Advantageously, the electrical apparatus  1  makes it possible to perform, in addition to the function of interrupting the basic current performed by the primary functional module  2 , at least one additional function using the additional functional module  5 . Such an additional functional module  5  thus allows the electrical apparatus  1  to be customized. Furthermore, as the additional functional module  5  is optional, it is able to be installed or removed at any time without impacting the electrical installation. Specifically, the electrical apparatus  1  is able to operate only with the primary functional module  2 . The electrical apparatus  1  that is obtained is thus particularly flexible. Moreover, the additional function of the additional functional module  5  is not intended to inform the user about the location or the state of the interruption function, but advantageously extends to functions independent of the interruption function. 
     The electrical apparatus  1  is preferably intended to be assembled with or recessed into a support (not shown), such as a wall. 
     The primary functional module  2  may be a monostable switch module (not shown) or a bistable switch module ( FIGS. 1A to 1C ). In the case of a monostable switch module, in the open position, the control member  2 ′ does not act on the opening of the electrical circuit and, in the closed position, the control member  2 ′ may be designed to close the electrical circuit; in this configuration, the monostable switch module is also called “normally open”. According to one alternative of a monostable switch module, in the open position, the control member  2 ′ may be designed to open the electrical circuit and, in the closed position, the control member  2 ′ does not act on the closure of the electrical circuit; in this configuration, the monostable switch module is also called “normally closed”. The control member  2 ′ of a monostable switch module may preferably be a pushbutton (not shown). 
     For a bistable switch module, shown in  FIGS. 1A to 1C , in the open position, the control member  2 ′ may be designed to open the electrical circuit and, in the closed position, the control member  2 ′ may be designed to close the electrical circuit. In this case, the control member  2 ′ may preferably be a toggle switch that is able to adopt two positions. However, this example is not limiting. 
     The primary functional module  2  comprises a first connection pole  3  able and intended to be connected to a first line L of the electrical grid, a second connection pole  4  able and intended to be connected to a second line L 1  of an electrical circuit of the electrical installation and a third connection pole  40  able and intended to be connected to a third neutral line N of the electrical grid ( FIG. 5 ). 
     The first line L may be a power supply line connected to the electrical grid, preferably via a switching device, such as a circuit breaker. 
     The second line L 1  may be a return line for supplying power to a load  20  of the electrical installation, such as lighting ( FIG. 5 ). 
     The first line L, the second line L 1  and the third neutral line N may take the form of one or more cables (not shown). 
     The electrical installation may preferably be a domestic electrical installation. 
     Said at least one function of the additional functional module  5  may be chosen, alone or in combination, from among a function of measuring at least one physical parameter and/or an electromagnetic radiation transmission and/or reception function and/or a display function and/or an actuation function and/or a data processing function and/or a function of transforming a physical signal into an electrical signal or vice versa. 
     Said at least one physical parameter may be temperature, pressure, hygrometry, brightness; these examples are of course nonlimiting. 
     The electromagnetic radiation transmission and/or reception function may be limited to radiofrequency electromagnetic radiation. This configuration is preferred in particular in order to allow data to be communicated from the electrical apparatus  1  to a control unit (not shown) described below. 
     The function of the additional functional module  5  may be able and intended to be supplied with power and activated when the control member  2 ′ of the primary functional module  2  is in the open position or when the primary functional module  2  is in the closed position. 
     Advantageously, in this configuration, the means for performing the function of the additional functional module  5  are able to be supplied with power by the electrical grid when the electrical circuit of the primary functional module  2  is open, and therefore when the control member  2 ′ is in the open position. As a result, when the control member  2 ′ is in the open position or when the electrical circuit of the primary functional module  2  is closed and therefore when the control member  2 ′ is in the closed position. As a result, when the control member  2 ′ is in the open position or in the closed position, the function of the additional functional module  5  is able to be activated. Therefore, the power supply of the additional functional module  5  is independent of the state of the primary functional module  2 . 
     The additional functional module  5  may comprise an electrical energy storage and/or production element and the function of the additional functional module  5  may be able and intended to be supplied with power by said electrical energy storage and/or production element. 
     Advantageously, the function of the additional functional module  5  is able to be supplied with power by an electrical energy storage and/or production element, which may be made independent and autonomous in relation to the electrical grid. As a result, the function of the additional functional module  5  is able to be activated independently of the open or closed position of the primary functional module  2 , this being particularly useful in the case of disconnection from the electrical grid. 
     The electrical energy storage and/or production element may be a battery, a capacitor, a piezoelectric generator, a photovoltaic generator, or a thermoelectric generator, for example a Peltier or Seebeck generator. 
     The additional functional module  5  may comprise at least one measurement sensor able and intended to perform said function of measuring at least one physical parameter. 
     The measurement sensor may be a temperature sensor, a pressure sensor, a hygrometer, a photodetector, an infrared sensor, a transducer; these examples are of course nonlimiting. 
     The additional functional module  5  may comprise at least electromagnetic wave transmission and/or reception means able and intended to perform said electromagnetic radiation transmission and/or reception function. 
     These electromagnetic wave transmission and/or reception means may be a radiofrequency communication element, for example Wi-Fi or Bluetooth, or a repeater. Of course, these examples are not limiting. 
     Advantageously, these electromagnetic wave transmission and/or reception means make it possible to receive and/or transmit data that may in particular relate to the additional functional module  5 . Such electromagnetic wave transmission and/or reception means may, in addition, establish a wireless communication link with a control unit, such as a computer, a smartphone or a digital tablet or to another additional functional module  5  according to the invention and that would also be equipped with electromagnetic wave transmission and/or reception means. It is thus possible to interact remotely with the electrical apparatus  1 . 
     The additional functional module  5  may comprise at least display means able and intended to perform said display function. 
     Advantageously, these display means make it possible to form a visual interface with a user. 
     These display means may be a screen. 
     The additional functional module  5  may comprise at least actuation means able and intended to perform said actuation function. 
     The actuation means may be an actuator, for example a relay, a solenoid, a micromotor, a piezoelectric mechanism or, in general, any type of means configured so as to transform an electrical quantity into a mechanical quantity or vice versa. 
     The additional functional module  5  may comprise at least data processing means able and intended to perform said data processing function. 
     The data processing means may be a microcontroller. These data processing means may, for example, make it possible to process data coming from the measurement sensor. 
     The additional functional module  5  may comprise at least image-capturing means, for example, a camera. 
     The additional functional module  5  may comprise at least one transducer able and intended to perform said function of transforming a physical signal into an electrical signal or vice versa. 
     The transducer may be an electroacoustic transducer, such as a speaker or a microphone. 
     The transducer may be a vibrator or a diffuser. 
     The additional functional module  5  may comprise at least one electronic card  10 ,  11  comprising the measurement sensor and/or the electromagnetic wave transmission and/or reception means and/or the display means and/or the actuation means and/or the data processing means and/or the image-capturing means and/or the transducer. 
     According to one variant embodiment of the invention, a first electronic card  10  may comprise the measurement sensor and/or the display means and/or the electromagnetic wave reception and/or actuation means and/or a transducer and/or image-capturing means and a second electronic card  11  may comprise the electromagnetic wave transmission and/or reception means and/or the data processing means and a third electronic card (not shown) may comprise the electrical energy storage and/or production element. 
     The first electronic card  10 , the second electronic card  11  and the third electronic card may be electrically connected to one another. 
     The first electronic card  10  may preferably be a removable component of the additional functional module  5 . 
     Advantageously, the function or functions of the additional functional module  5  may thus be modified simply and easily by replacing the first electronic card  10 . It is thus not necessary to replace the entire additional functional module  5 . 
     In particular, the first electronic card  10  may comprise at least first connection means  24  complementary with at least second connection means  25  of the second electronic card  11 . Said connection means make it possible to electrically and mechanically connect the first electronic card  10  and the second electronic card  11  in a removable and reversible manner ( FIGS. 2A and 2D ). 
     The first connection means  24  and the second connection means  25  may consist of a USB connection, by way of non-limiting example. 
     The primary functional module  2  may comprise at least a first connection terminal  3 ′ electrically connected to the first connection pole  3  and a third connection terminal  40 ′ electrically connected to the third connection pole  40 , and the first connection terminal  3 ′ and the third connection terminal  40 ′ may form a first outlet  13  ( FIG. 1C ). 
     According to one alternative possibility, said primary functional module  2  may comprise at least a first conductive wire connected (not shown) to the first connection pole  3  and a second conductive wire (not shown) connected to the third connection pole  40 , the first conductive wire and the second conductive wire being able to be connected to a terminal block (not shown) of the additional functional module  5 . 
     The additional functional module  5  may comprise at least a fourth connection terminal  6 ′ electrically connected to the fourth connection pole  6  and a fifth connection terminal  7 ′ electrically connected to the fifth connection pole  7  and the fourth connection terminal  6 ′ and the fifth connection terminal  7 ′ may form a second outlet  14  ( FIGS. 2B and 2C ). 
     According to one alternative possibility, said additional functional module  5  may comprise a terminal block (not shown) electrically connected to the fourth connection pole  6  and to the fifth connection pole  7 . The first conductive wire and the second conductive wire of the primary functional module  2  may be connected to the terminal block. 
     The first outlet  13  of the primary functional module  2  and the second outlet  14  of the additional functional module  5  may have complementary shapes so as to be connected and so as to electrically and mechanically connect the first connection terminal  3 ′ to the fourth connection terminal  6 ′ and so as to electrically and mechanically connect the third connection terminal  40 ′ to the fifth connection terminal  7 ′ ( FIGS. 1C, 2B, 2C, 3B, 5 ). 
     The first connection terminal  3 ′ and the third connection terminal  40 ′ may be respectively a first female terminal and a second female terminal, for example taking the form of a cavity provided with electrical contact. In this case, the first outlet  13  is a socket. This first outlet  13  may preferably comprise two cavities distributed along one side of a square ( FIG. 1C ). 
     The first socket outlet  13  may preferably have a protection rating whose degree of protection against solids is between 0 and 6 and whose degree of protection against liquids is between 0 and 8. For example, the protection rating may be equal to IP2X, X being a value between 0 and 8. 
     The fourth connection terminal  6 ′ and the fifth connection terminal  7 ′ may be respectively a fourth male terminal and a fifth male terminal, for example taking the form of a rod. In this case, the second outlet  14  is a plug. The second outlet  14  may comprise a base  14 ′ from which the fourth connection terminal  6 ′ and the fifth connection terminal  7 ′ in the form of a rod extend. The base  14 ′ preferably has a substantially square shape with rounded corners from which four pads  14 ″ extending substantially orthogonal to the base  14 ′ extend. These pads  14 ″ form a mechanical joint with the first socket outlet  13 , these pads  14 ″ being able to fit into the cavities. Two of these pads  14 ″ may support the two rods forming the fourth connection terminal  6 ′ and the fifth connection terminal  7 ′ ( FIGS. 2A, 2B, 2C, 2E ). 
     The primary functional module  2  may comprise a first housing  15  with which the first outlet  13  and the control member  2 ′ are assembled ( FIGS. 1A, 1B, 1C ). 
     The first housing  15  makes it possible to protect the primary functional module  2 . 
     The first housing  15  may be made from polymer material. 
     The first housing  15  may comprise four lateral faces  15   a ,  15   b ,  15   d , a front opening  15   e , and a rear face  15   f . The first housing  15  may have a substantially rectangular cross section. 
     The first outlet  13  and the control member  2 ′ preferably cover the front opening  15   e . As a result, the first outlet is advantageously accessible from the front of the primary functional module  2 , thereby facilitating interlocking with the second outlet  14  of the additional functional module  5 . 
     The additional functional module  5  may comprise a second housing  16  in which said at least one electronic card  10 ,  11  comprising the measurement sensor and/or the electromagnetic wave transmission and/or reception means and/or the display means and/or the actuation means and/or the data processing means and/or the transducer is housed. 
     The second housing  16  makes it possible to protect the additional functional module  5  ( FIGS. 2A and 2B ). 
     The second outlet  14  of the additional functional module  5  may project from the second housing  16  of the additional functional module  5 . 
     The second housing  16  may be made from polymer material. 
     The second housing  16  may comprise four lateral faces  16   a ,  16   b ,  16   d , a front opening  16   e , and a rear face  16   f . The second housing  16  may have a substantially rectangular cross section. 
     Preferably, the base  14 ′ of the second outlet  14  may extend in the plane of the front opening  16   e  and the pads  14 ″ may extend in the direction of the lateral faces  16   a ,  16   b ,  16   d.    
     The second housing  16 , the base  14 ′ and the pads  14 ″ may form a single one-piece component, which is for example molded. 
     Alternatively, the second outlet  14  may be a removable element (not shown) of the second housing  16 . More particularly, the base  14 ′ may be mechanically connected to the second housing  16  removably and reversibly by mechanical connection means (not shown). The base  14 ′ may furthermore comprise electrical connection means (not shown) electrically connected to the fourth connection terminal  6 ′ and to the fifth connection terminal  7 ′ and complementary with electrical connection means (not shown) arranged on the second housing  16 . These electrical connection means of the second housing  16  may consist of a terminal block. 
     One of the lateral faces  15   b  of the first housing  15  may be adjacent to one of the lateral faces  16   d  of the second housing  16 , more particularly these lateral faces  15   b ,  16   d  may be contiguous and facing one another. These contiguous lateral faces  15   b ,  16   d  may comprise guide means (not shown) in order to facilitate the positioning of the first and second housings  15 ,  16  with respect to one another. 
     The first electronic card  10  may cover the front opening  16   e.    
     Advantageously, due to this configuration, the first electronic card  10  is easily accessible and may easily be secured/detached to/from the second electronic card  11  in order to be replaced. 
     The reception module  8  may comprise a support frame  8 ′ comprising a central opening  17  at least partly forming said first and second reception areas  9 ,  9 ′ receiving the first housing  15  ( FIGS. 3A, 3B, 3D ) and the second housing  16 , and the first housing  15  and the second housing  16  may respectively comprise removable fastening means  18 ,  19  interacting with the support frame  8 ′ ( FIGS. 1A, 1B, 2A, 2B ). 
     The fastening means  18 ,  19  respectively of the first housing  15  and of the second housing  16  may preferably consist of two tabs projecting respectively from two of the opposing lateral faces  15   a ;  16   a  ( FIGS. 1A, 1B, 1C, 2A, 2B, 2E ). 
     The reception module  8  may also comprise a recessed housing  8 ″ to which the support frame  8 ′ is able to be fastened by fastening means (not shown) ( FIGS. 3A, 3B, 3D, 4 ). This recessed housing  8 ″ may be intended to be recessed into a support, such as a wall. 
     The recessed housing  8 ″ may comprise a receptacle for receiving the four lateral faces  15   a ,  15   b ,  15   d  and the rear face  15   f  of the first housing  15  and the four lateral faces  16   a ,  16   b ,  16   d  and the rear face  16   f  of the second housing  16 . 
     The control member  2 ′, the base  14 ′ of the second outlet  14  and the first electronic card  10  may be covered with at least one cover plate  21  comprising or not comprising at least one button (not shown) which makes it possible to actuate the control member  2 ′ of the primary functional module  2  ( FIGS. 3C, 3D, 4 ). 
     The cover plate  21  simultaneously plays the role of an interface with the user and may also have an esthetic function and a protective function. 
     The cover plate  21  may also make it possible to block off the control member  2 ′, which is no longer able to be activated in this case. 
     The support frame  8 ′ may be covered with a covering frame  22 . 
     The additional functional module  5  is suitable and intended for an electrical apparatus  1  as described above, said electrical apparatus comprising a primary functional module  2  and an additional functional module  5 . 
     According to the invention, said additional functional module  5  is characterized in that it corresponds to the additional functional module  5  of said electrical apparatus  1  and comprises at least a fourth connection pole  6  and a fifth connection pole  7  that are able and intended to be electrically connected respectively to the first connection pole  3  and to the third connection pole  40  of the primary functional module  2  of the electrical apparatus  1 , in order to supply power to the additional functional module  5  and comprises means for performing at least one function requiring an electric power supply, said at least one function of the additional functional module  5  is a function requiring an electric power supply, excluding a lighting function. 
     Said at least one function of the additional functional module  5  may be chosen, alone or in combination, from among a function of measuring at least one physical parameter and/or an electromagnetic radiation transmission and/or reception function and/or a display function and/or an actuation function, a data processing function and/or a function of transforming a physical signal into an electrical signal or vice versa. 
     The function of the additional functional module  5  may be able and intended to be supplied with power and activated when the control member  2 ′ of the primary functional module  2  is in the open position or when the primary functional module  2  is in the closed position. 
     The additional functional module  5  may comprise an electrical energy storage and/or production element and the function of the additional functional module  5  may be able and intended to be supplied with power by said electrical energy storage and/or production element. 
     Said electrical energy storage and/or production element may be as described above. 
     The additional functional module  5  may comprise at least one measurement sensor able and intended to perform said function of measuring at least one physical parameter. 
     The measurement sensor may be as described above. 
     The additional functional module  5  may comprise at least electromagnetic wave transmission and/or reception means able and intended to perform said electromagnetic radiation transmission and/or reception function. 
     The electromagnetic wave transmission and/or reception means may be as described above. 
     The additional functional module  5  may comprise at least display means able and intended to perform said display function. 
     The display means may be as described above. 
     The additional functional module  5  may comprise at least actuation means able and intended to perform said actuation function. 
     The actuation means may be as described above. 
     The additional functional module  5  may comprise at least data processing means able and intended to perform said data processing function. 
     The processing means may be as described above. 
     The additional functional module  5  may comprise at least image-capturing means, for example a camera. 
     The additional functional module  5  may comprise at least one transducer able and intended to perform said function of transforming a physical signal into an electrical signal or vice versa, as described above. 
     The additional functional module  5  may comprise at least one electronic card  10 ,  11  comprising the measurement sensor and/or the electromagnetic wave transmission and/or reception means and/or the display means and/or the actuation means and/or the data processing means. 
     The additional functional module  5  may comprise a second housing  16  in which said at least one electronic card  10 ,  11  comprising the measurement sensor and/or the electromagnetic wave transmission and/or reception means and/or the display means and/or the actuation means and/or the data processing means is housed. 
     The additional functional module  5  may comprise a first electronic card  10 , a second electronic card  11  and a third electronic card, as described above. 
     The second housing  16  may be as described above. 
     The additional functional module  5  may comprise at least a fourth connection terminal  6 ′ electrically connected to the fourth connection pole  6  and a fifth connection terminal  7 ′ electrically connected to the fifth connection pole  7  and the fourth connection terminal  6 ′ and the fifth connection terminal  7 ′ may form a second outlet  14 . 
     According to one alternative possibility, said additional functional module  5  may comprise a terminal block (not shown) electrically connected to the fourth connection pole  6  and to the fifth connection pole  7 . The first conductive wire and the second conductive wire of the primary functional module  2  may be connected to the terminal block. 
     The second outlet  14  of the additional functional module  5  may project from the second housing  16  of the additional functional module  5 . 
     The second outlet  14  may be as described above. 
     The second housing  16  may comprise removable fastening means  18 ,  19  able and intended to interact with a support frame  8 ′ of the electrical apparatus  1 . These fastening means  18 ,  19  may be as described above. 
     The invention also relates to an electronic card  10  for an additional functional module as described above. 
     According to the invention, the electronic card  10  is characterized in that it comprises a measurement sensor and/or display means and/or actuation means and in that it comprises at least first connection means  24  so as to be able and intended to form a removable component of said additional functional module  5 . 
     This electronic card corresponds to the first electronic card  10  as described above. 
     Of course, the invention is not limited to the embodiments that are described and shown in the appended drawings. Modifications remain possible, particularly from the point of view of the composition of the various elements or by substituting technical equivalents, without otherwise departing from the scope of protection of the invention.