Control unit for an electrical circuit breaker and associated electrical circuit breaker

Abstract

Control unit for an electrical circuit breaker and associated electrical circuit breaker. This control unit (20) includes a housing (30) defining a front plane (P22), into which opens a housing (401) configured to receive a communication module (400) in the assembled position. Contact areas (36) are arranged at the bottom of the housing, recessed from the front plane (P22), such that the air gap between each contact area and the front plane is greater than a Class 2 insulation distance, according to IEC947-1:2019, under a voltage above 690V. The communication module includes an enclosure (410), which delimits a cavity (411) configured to receive a wireless communication card (414) and which, in a position assembled to the housing, closes the housing, so that a creepage distance each contact area and the front plane is greater than a class 2 isolation distance under a voltage greater than 690V according to IEC947-1:2019.Figure for the abbreviation: Figure 3.

Description

Title of the invention: Control unit for an electrical circuit breaker and associated electrical circuit breaker

[0001] The present invention relates to a control unit for an electrical circuit breaker, as well as an electrical circuit breaker comprising such a control unit.

[0002] The present invention relates to a control unit of an electrical circuit breaker, as well as an electrical circuit breaker comprising such a control unit.

[0003] Electrical circuit breakers comprising a breaking unit and an electronic control unit are known, notably from EP-0 843 332-A1. Such a control unit is typically configured to measure the operating status of the circuit breaker in real time and to control the opening of the breaking unit in the event of a circuit breaker malfunction. The control unit is reversibly housed in a receptacle provided within the breaking unit and is located on the front face of the circuit breaker, so that a user can read and / or adjust certain operating parameters of the electrical circuit breaker. The control unit is removable, so that a user can replace the control unit in the event of a malfunction without having to disconnect the breaking unit from the rest of the electrical installation.

[0004] Depending on the application, the circuit breaker operates at voltages of several hundred or even thousands of volts, and at currents of up to several thousand amperes. The circuit breaker in general, and the control unit in particular, must have sufficient electrical insulation to ensure the safety of people. For example, IEC 947-1:2019 – Tables 13 and 15 – defines insulation classes, which correspond to minimum distances to be maintained between live parts – or parts likely to become live – and the user. The insulation distances depend in particular on the required insulation class and the voltage at which the circuit breaker operates.The IEC 947-1:2019 standard primarily considers two voltage ranges: one corresponding to a voltage less than or equal to 690V, and the other to a voltage strictly greater than 690V. For example, for a voltage above 690V, Class 1 insulation requires an air clearance greater than 7 mm and creepage distances greater than 10 mm. Class 2 insulation doubles these distances. For a voltage below 690V, Class 2 insulation requires an air clearance greater than 10 mm.

[0005] With the evolution of technologies and needs, it is advantageous to offer, at as needed, a communication interface, in particular a wireless communication interface, so that the user can transfer data to and / or from the control unit.

[0006] Wireless communication interfaces require an antenna, which must be placed on the front of the circuit breaker to function satisfactorily. It is known to connect an external communication module to the control unit. This module includes a housing that receives the antenna and a connecting cable, which is plugged into the rear of the control unit, while the housing is fixed to the front of the circuit breaker. Such a solution is impractical, as it requires removing the control unit from its housing to make the connection. Furthermore, the housing fixed to the circuit breaker is bulky and susceptible to damage.

[0007] It is these needs that the invention intends to address more particularly, by proposing a modular control unit, which allows, if necessary, the installation of a communication module, without having to extract the control unit from the receptacle provided in the control unit, while guaranteeing the protection of persons.

[0008] To this end, the invention relates to a control unit for an electrical circuit breaker, the control unit comprising: - a front face, which has a generally flat shape and is geometrically supported by a front plane, the front face being orthogonal to a depth axis and defining a front direction oriented towards the user when the control unit is in a normal operating configuration, - a housing, which is made of an insulating material and which delimits a compartment, the compartment being set back from the front plane and opening onto the front face, - an electronic card, which includes at least one connection area with several juxtaposed electrical contact areas, the connection area being located within the housing, - a communication module, which includes an enclosure delimiting a cavity, the cavity being configured to receive a wireless communication card including an antenna and additional connectors, the enclosure being made of an electrically insulating material and being configured to be received reversibly in the housing, the enclosure of the communication module being in an assembled position,

[0009] in which: - each contact area is set back from the front plane and is distanced from the front plane by a distance, measured along the depth axis, greater than a first predetermined threshold, - the first threshold is chosen so that a distance in the air between each contact area and front plane is greater than a class 2 insulation distance under a voltage greater than 690V, the air gap and class 2 insulation distance being in accordance with IEC947-1:2019, and - when the enclosure is in the assembled position, the enclosure at least partially closes the housing, so that a creepage distance between each contact area and the front plane is greater than a second predetermined threshold, the second threshold being equal to a class 2 insulation distance under a voltage greater than 690V according to IEC947-l:2019.

[0010] Thanks to the invention, the communication module can be easily installed from the front of the control unit, without having to remove the control unit from the switching unit. The electrical contact areas are all recessed from the front face, which ensures sufficient insulation distance when the communication module housing is mounted on the control unit housing, whether or not the communication card is present. Thus, once installed, the communication module does not increase the size of the control unit, which therefore remains compact.

[0011] According to advantageous but not obligatory aspects of the invention, such a unit of control may incorporate one or more of the following characteristics taken in isolation or in any technically permissible combination: - The first threshold is greater than or equal to 14 mm. - Each envelope comprises a proximal wall, which is globally orthogonal to a principal axis, and a peripheral wall, which extends in projection from the proximal wall and which has a continuous contour around the principal axis, the proximal wall and the peripheral wall together delimiting the cavity of the envelope, the cavity opening from the envelope by a distal mouth, which is located opposite the proximal wall along the principal axis, whereas, when the communication module is in assembled configuration, the principal axis is parallel to the depth axis, while the distal mouth is oriented towards the corresponding connection area, the cavity masking the contact areas along the depth axis. - The second threshold is equal to 20 mm. - The communication module includes the communication card, which is received in the cavity. - The communication module includes at least one additional contact, made of metal, which is partially housed within the cavity and protrudes outside the casing through the distal opening, while each additional contact is configured to be connected, from reversibly, to a respective electrical contact range of the housing when the communication module is in assembled configuration.

[0012] The invention also relates to an electrical circuit breaker, which comprises: - a switching unit, comprising at least one switching device and an actuator, the switching device being triggerable by means of the actuator, - a copy of the control unit as described above,

[0013] in which: - the switching unit provides a receptacle, which opens onto a front face of the switching unit, - the control unit is received in the receptacle of the cutting unit, so that the front face of the control unit is substantially aligned with the front face of the cutting unit.

[0014] Advantageously: - The switching unit includes a front panel, which is removable from the rest of the switching unit, which is made of an electrically insulating material and which defines a portion of the front face of the switching unit, - The communication unit is a border unit, arranged along the edge of the front face, while the communication module has a recess, which is set back from the front plane. - when the control unit is received in the receptacle and the faceplate is mounted on the switching unit, the faceplate covers at least part of the recess, so as to prevent the communication module from being removed from the rest of the control unit.

[0015] The invention will be better understood, and other advantages thereof will become more apparent in the light of the following description of an embodiment of a control unit and an electrical circuit breaker, in accordance with its principle, given solely by way of example and with reference to the accompanying drawings, in which:

[0016] - [Fig. 1] [Fig. 1] represents, respectively, on two inserts a) and b), a view in perspective and a partially exploded perspective view of an electrical circuit breaker according to the invention, the electrical circuit breaker comprising a control unit, also according to the invention;

[0017] - [Fig.2] [Fig.2] is a perspective view of the control unit of [Fig.1];

[0018] - [Fig.3] [Fig.3] represents, on two insets a) and b), a perspective view by exploded view of the control unit of the [Fig.1], observed from two different viewpoints;

[0019] - [Fig.4] [Fig.4] represents, on two insets a) and b), a cross-section of the unit of control of [Fig.1], represented in two other configurations;

[0020] - [Fig.5] [Fig.5] represents, respectively, on two inserts a) and b), a view in perspective and a cross-section of the electrical circuit breaker of [Fig.1], some parts being hidden.

[0021] An electrical circuit breaker 10 is shown in [Fig. 1]. The electrical circuit breaker 10, also simply called circuit breaker 10, is here a multipole circuit breaker, in particular a three-pole circuit breaker. The number of poles is not limiting. As is known, a multipole electrical circuit breaker has, for each electrical pole, input and output power terminals, which are respectively connected or electrically isolated from each other by a circuit breaker disconnecting device. The disconnecting device includes, for example, separable moving contacts, which are received in a disconnecting chamber of the electrical circuit breaker 10 and whose movements are controlled by an actuator. Thus, the disconnecting device can be tripped by the actuator. The disconnecting chambers are here represented by three grids 12 visible on one upper face of the circuit breaker 10; the other elements of the disconnecting device are not shown.

[0022] The circuit breaker 10 is intended for use within an electrical installation, for example, to control the power supply to a machine tool. In a normal operating configuration, the circuit breaker 10 is generally housed within an electrical cabinet, the circuit breaker 10 having a front face 14, which is oriented towards the user standing in front of the electrical cabinet. The electrical cabinet is not shown.

[0023] The electrical circuit breaker 10 includes a breaking unit 16, which in particular comprises each of the breaking chambers, as well as the breaking device and the associated actuator.

[0024] The electrical circuit breaker 10 advantageously comprises a faceplate 18, which is removable from the rest of the breaking unit 16. The faceplate 18 is made of an electrically insulating material and extends generally along a front plane P14, which defines a portion of the front face 14 of the electrical circuit breaker 10, and by extension, of the breaking unit 16. The faceplate 18 thus serves to protect the user of the circuit breaker 10. In [Fig. 1 a), the faceplate 18 is shown assembled with the breaking unit 16, which corresponds to a normal operating configuration of the circuit breaker 10. In [Fig. 1 b), the faceplate 18 is removed from the breaking unit 16, this configuration being found, for example, during maintenance of the breaking unit 16.

[0025] The electrical circuit breaker 10 also includes a control unit 20. The control unit 10 is configured to analyze states of the breaking unit 16 and is configured to trigger the actuator according to the results of these analyses, thus separating the separable contacts.

[0026] The control unit 20 comprising a front face 22, The front face 22 has a generally flat shape and is geometrically supported by a front plane P22, which is orthogonal to a depth axis A22 of the control unit 20. The front face 22 is oriented towards the user when the control unit 20 is in its normal operating configuration. The front face 22 thus defines a forward direction D22, which is parallel to the depth axis A22. The forward direction D22 is represented by an arrow. The notions of directions such as "forward," "backward," "up," "down," etc., are defined in relation to the elements as shown in the drawings, bearing in mind that this may differ in reality.

[0027] The front panel 18 includes a window 19 through which the front face 22 of the cutting unit 20 is visible. The window 19 is preferably closed by a transparent flap. The flap is not shown.

[0028] The control unit 10 is assembled to the switching unit 16 in a reversible manner. In the example of figures 1a) and 1b), the control unit 20 is shown in the configuration assembled to the switching unit 16. The control unit 20 is shown in isolation in [Fig.2].

[0029] The cutting unit 16 provides a receptacle, which opens onto a front face 14 of the cutting unit 16 and in which the control unit 20 is received, so that the front face 22 of the control unit 20 is substantially aligned with the front face 14 of the cutting unit 16, as illustrated in particular in [Fig.1] a). The receptacle is not shown.

[0030] The control unit 20 is now described, with reference to Figures 2 to 4.

[0031] The control unit 20 includes a housing 30, which is made of an insulating material and which forms a receiving volume for various components of the control unit 10. The housing 30 in particular houses an electronic card 32, which is partially visible in figures 3 and 4. The electronic card 32 includes in particular a printed circuit board and several electronic components such as a microprocessor, etc.

[0032] In the illustrated example, the electronic board 32 comprises several portions, which are connected to each other by communication buses. The communication buses are not shown. Optionally, one or more portions of the electronic board 32 are flexible. Alternatively, the electronic board 32 includes several portions that are not connected to each other by communication buses.

[0033] The housing 30 here includes a front subassembly 100. By extension, the subassembly 100 belongs to the control unit 20. The front subassembly 100 includes a central portion 102, which is configured here to receive at least one human-machine interface element 104. A human-machine interface is also designated by its acronym HMI. The human-machine interface elements 104 are also simply referred to as "HMI elements" 104. In the illustrated example, the central portion 102 includes several HMI elements 104. The HMI elements 104 include Here, three indicator lights 104A, a transparent portion 104B through which a screen can be viewed, and four buttons 104C. These examples are not limiting; the type, number, and arrangement of the HMI elements 104 can be changed during the design of the subassembly before 100.

[0034] The front subassembly 100 is advantageously assembled to the rest of the control unit 20, in particular to the housing 30, in a reversible manner. This makes it possible to replace the front subassembly 100 in case of malfunction. The central portion 102 thus forms part of the front face 22 of the control unit 120.

[0035] The housing 30 includes at least one housing 98, here three housings, each housing being set back from the front plane P22 and opening onto the front face 22.

[0036] The control unit 20 also includes at least one functional module 99, here three functional modules 99, each housing being associated with a respective functional module. Each functional module 99 is thus configured to be received reversibly in the associated housing, the functional module 99 in question being in an assembled configuration.

[0037] Preferably, the control unit 20 comprises several functional modules 99. In the illustrated example, the control unit 20 comprises three functional modules 99, which are different from one another and include a first module 200, which is a battery module, a second module 300, which is a wired connection module, and a third module 400, which is a wireless communication module. The second functional module 300 is concealed by a cover 308. Each functional module 99 is associated with a respective slot 98. Each functional module 99 is configured to be reversibly received in its associated slot 98, the functional module 99 then being in an assembled configuration.In the illustrated example, each functional module 99 is configured to be inserted into the corresponding housing 98 by means of an insertion movement, which is a translational movement parallel to the depth axis A22 and oriented in a rear direction, i.e. in a direction opposite to the front direction D22.

[0038] We are interested here in the third communication module 400, although the invention can of course be implemented in the absence of the other functional modules. The third communication module 400 is also simply called the "communication module 400". The housing 98 associated with the third communication module 400 is also called the communication housing 401.

[0039] The housing 30 defines the communication slot 401, which is recessed from the front surface P22 and opens onto the front face 24. In other words, the communication slot 401 is open in the direction of the front face D22. In the illustrated example, the communication slot 401 is arranged on an edge of the front face 24, meaning that the communication slot 401 is also open in a direction radial to the forward direction D22. In the illustrated example, the communication housing 401 is open towards the top of the control unit 20. The communication housing 401 is thus called a "border housing".

[0040] The electronic card 32 includes a connection area 34, which comprises several adjacent electrical contact areas 36. The connection area 34 here comprises five aligned contact areas 36. The connection area 34 is located in the connection housing 401, the electronic card 32 here forming a base of the connection housing 401.

[0041] Each contact area 36 comprises a substantially flat conductive element located on the surface of the electronic board 32, each contact area 36 being designed to be electrically connected to a respective supplementary connector 417 belonging to the communication module 400, each supplementary connector 417 bearing against the corresponding contact area 36. The supplementary connectors 417 are described in detail later. Advantageously, the contact areas 36 are part of the printed circuit board of the electronic board 32, that is to say, they are manufactured at the same time as the electronic board 32.

[0042] Each contact area 36 of the connection zone 34 is set back from the front plane P22 and is located at a distance from the front plane P22, measured along the depth axis, greater than a predetermined first SI threshold. The first SI threshold is chosen such that the air gap between each contact area 36 and the front plane P22 is greater than a Class 2 insulation distance under a voltage exceeding 690V, the air gap and the Class 2 insulation distance being defined according to IEC947-1:2019. Schematically, the air gap between two points is the shortest path between those two points, while avoiding any obstacles.

[0043] Preferably, the first SI threshold is greater than or equal to 14 mm.

[0044] The communication module 400 is now described.

[0045] The communication module 400 is configured to be received in the communication housing 401 in an assembled position of the communication module 400, the control unit 20 then being in an assembled configuration. The communication module 400 comprises a body 410, which is made of an electrically insulating material.

[0046] The body 410 is shown in isolation in [Fig. 3], and in its assembled configuration in [Fig. 2]. With reference to Figure 9, where the body 410 is shown in section, the body 410 comprises a main portion defining a cavity 411, which is open along a rearward direction of the body 410, the rearward direction being opposite to the front direction D22 when the communication module 400 is assembled to the housing 30. Optionally, the communication module 400 also advantageously comprises a communication card 414, which is configured to be received in cavity 411. The communication card 414 advantageously includes an antenna 416, and several copies of the complementary contacts 417. The complementary contacts 417 are here pins 417, preferably telescopic pins - also called "pogo-pin" in English - each pin 417 being configured to be connected to a respective contact range 36 according to a movement including a translational component.

[0047] The body 410 here has an elongated shape and extends parallel to a transverse axis T410 of the body 410, as illustrated in [Fig. 5]. When the body 410 is assembled to the housing 30, the transverse axis T410 is parallel to a transverse axis of the housing 30, and by extension of the control unit 20, the transverse axis being parallel to the front plane P22.

[0048] The body 410, in cross-section along a plane orthogonal to the transverse axis T410, in other words, in transverse section, has a substantially constant cross-section. The body 410 comprises a proximal wall 41 IA, which is located on the user's side when the connection module 300 is in the assembled position, and two lateral walls 41 IC, which extend orthogonally to the transverse axis T410 and are connected to each other by the proximal wall 41 IA. The body 410 also comprises an upper wall 411D and a lower wall 411E, which are parallel to each other and are connected, on the one hand, by the proximal wall 41 IA and, on the other hand, by the lateral walls 411D. The proximal wall 41 IA is here flat and globally orthogonal to a main axis A411. When the communication module 400 is in the configuration assembled to the housing 30, the main axis A411 is parallel to the depth axis A22.The proximal wall 411 A, the lateral walls 41 IC, the superior wall 411D, and the inferior wall 411E together form an envelope that delimits the cavity 411. The lateral walls 41 IC, the superior wall 411D, and the inferior wall 411E together form a peripheral wall of the envelope, the peripheral wall extending in projection from the proximal wall 41 IA. The cavity 411 opens from the envelope of the communication module 400 through a distal opening 418, which is located opposite the proximal wall along the main axis A411.

[0049] Advantageously, the peripheral wall has a continuous contour around the main axis A411.

[0050] When the communication module is in its assembled configuration, the distal opening 418 is oriented towards the connection area 34, the cavity 411 masking the contact areas 36 along the depth axis A22, while a creepage distance from each contact area 36 to the front plane P22 is greater than a predetermined second threshold S2, the second threshold S2 being greater than the first threshold SL. Preferably, the second threshold S2 is greater than a Class 2 isolation distance as defined in IEC947-1:2019. Preferably, the second threshold S2 is equal to 20 mm.

[0051] The body 410 also includes fastening means 412 for holding the communication module 400 in the assembled position. The fastening means 412 are two elastic clips extending rearward from each of the lateral faces 41 IC. The fastening means 412 are advantageously reversible, so that a user can remove the communication module 400 from the communication housing 401, for example, to replace the communication module 400 in case of malfunction.

[0052] Advantageously, the proximal wall 41 IA is located recessed from the front plane P22, while the body 410 also includes a projection 413A, which extends from the proximal wall 411A in the forward direction D22, the proximal wall 411A and the projection together defining a recess 413B in the body 410, and by extension, in the third communication module 400. The recess 413B is thus located recessed from the front plane.

[0053] The projection 413A has here, in cross-section, a continuous L-shaped profile. The projection 413A is located at a distance from a junction edge between the proximal wall 411A and the upper wall 411D, so that the recess 413B is open both forward and upward to the control unit 20 when the body 410 is in the assembled position on the housing 30.

[0054] When the control unit 20 is received in the receptacle of the switching unit 16 and the faceplate 18 is mounted on the switching unit, the faceplate covers the recess 413B, so as to prevent the communication module from being removed from the rest of the control unit 20, as illustrated in [Fig. 5]. More specifically, an edge 19A of the window 19 of the faceplate 18 cooperates with the recess 413B, so as to limit the movement of the body 410 relative to the housing 30 of the control unit 20, in particular forward or upward translational movements. The communication module 400 is thus kept assembled to the housing 30.

[0055] It is thus understood that when the control unit 20 is received in the receptacle of the cutting unit 16, as long as the front panel 18 is assembled to the cutting unit 16, the front panel prevents both the dismantling of the communication module 400 from the control unit 20, and the dismantling of the control unit 20 from the cutting unit 16.

[0056] The complementary contacts 417 are here pins 417, preferably telescopic pins—also called "pogo-pins"—each pin 417 being configured to be connected to a respective contact range 36 by a translational movement. Advantageously, when the communication card 414 is received in the cavity 411, only the complementary contacts 417 protrude from the cavity 411, outside the housing, through the distal opening 418. The telescopic pins 417 allow for dimensional clearances when the module of communication 400 is in assembled position.

[0057] When the communication card 414 is received in the cavity 411, the antenna 416 is advantageously located opposite the proximal wall 41 IA, so as to promote the transmission of electromagnetic waves emitted or received by the antenna 416.

[0058] When the communication module 400 is received in the corresponding communication slot 401, the enclosure at least partially closes the associated communication slot 401, such that the creepage distance between each contact area 36 and the front plane P22 is greater than a Class 2 insulation distance under a voltage exceeding 690V, the creepage distance being in accordance with IEC947-L2019. The Class 2 insulation distance is achieved both when the communication card 414 is present and when the communication card is absent. It is therefore possible to add the communication card, as required by the user, to a control unit 20 that would initially lack one, even after the control unit 20 and the circuit breaker 10 have been put into operation, without changing the safety level of the circuit breaker 10.

[0059] In particular, when the housing of the communication module 400 is in the assembled position, the lower wall 411E extends towards the electronic card 32, one end of the lower wall 411E being located opposite the electronic card.

[0060] The embodiments and variants mentioned above can be combined with each other to generate new embodiments of the invention.

Claims

Demands

1. Control unit (20) for an electrical circuit breaker (10), the control unit (20) comprising: • a front face (22), which has a generally flat shape and is geometrically supported by a front plane (P22), the front face (22) being orthogonal to a depth axis (A22) and defining a front direction (D22) oriented towards the user when the control unit (20) is in a normal operating configuration, • a housing (30), which is made of an insulating material and which delimits a housing (401), the housing (401) being set back from the front plane (P22) and opening onto the front face (22), • an electronic card (32), which includes at least one connection area (34) with several juxtaposed electrical contact areas (36), the connection area (34) being located in the housing (401), • a communication module (400), which includes an enclosure delimiting a cavity (411), the cavity (411) being configured to receive a wireless communication card (414) comprising an antenna (416) and additional connectors (417), the enclosure being made of an electrically insulating material and being configured to be received reversibly in the housing (401), the enclosure of the communication module (400) being in an assembled position, in which: • each contact area (36) is located behind the front plane (P22) and is at a distance from the front plane (P22), measured along the depth axis (A22), greater than a predetermined first threshold (SI), • the first threshold (SI) is chosen such that an air gap between each contact area (36) and the front plane (P22) is greater than a class 2 isolation distance under a

2.

3.

4. voltage above 690V, the air gap and class 2 insulation distance being according to IEC947-1:2019, and when the enclosure is in the assembled position, the enclosure at least partially closes the housing (401), such that a creepage distance each contact area (36) and the front plane (P22) is greater than a second predetermined threshold, the second threshold being equal to a class 2 insulation distance under a voltage above 690V according to IEC947-1:2019. Control unit (20) according to claim 1, wherein: the first threshold (SI) is greater than or equal to 14 mm. Control unit (20) according to any one of claims 1 or 2, wherein: Each envelope comprises a proximal wall (411 A), which is generally orthogonal to a principal axis (A411), and a peripheral wall, which projects from the proximal wall (411 A) and has a continuous contour around the principal axis (A411). The proximal wall (411 A) and the peripheral wall together delimit the cavity (411) of the envelope. The cavity (411) opens from the envelope through a distal opening (418), which is located opposite the proximal wall (41 IA) along the principal axis (A411). When the communication module (400) is in its assembled configuration, the principal axis (A411) is parallel to the depth axis (A22), while the distal opening (418) is oriented towards the corresponding connection area (34). The cavity (411) masks the contact areas along the axis. depth (A22). Control unit (20) according to any one of claims 1 to 3, wherein: the second threshold is equal to 20 mm.

5. Control unit (20) according to any one of claims 1 to 4, wherein: • the communication module (400) includes the communication card (414), which is received in the cavity (411).

6. Control unit (20) according to claim 5, wherein: • the communication module (400) includes at least one additional contact (417), which is made of metal, which is partially received in the cavity (411) and which protrudes outside the housing by the distal mouth (418), • each additional contact (417) is configured to be reversibly connected to a respective electrical contact range (36) of the housing (401) when the communication module (400) is in the assembled configuration.

7. Electrical circuit breaker (10), comprising: • a breaking unit (16), comprising at least one breaking device and an actuator, the breaking device being trippable by means of the actuator, • a exemplary of the control unit (20) according to any one of claims 1 to 6, in which: • the breaking unit (16) provides a receptacle, which opens onto a front face (14) of the breaking unit, • the control unit (20) is received in the receptacle of the breaking unit, so that the front face (22) of the control unit (20) is substantially aligned with the front face of the breaking unit.

8. Electrical circuit breaker (10) according to claim 7, wherein: • the breaking unit (16) comprises a faceplate (18), which is detachable from the rest of the breaking unit, which is made of an electrically insulating material and which defines a portion of the front face (14) of the breaking unit (16), the communication housing (401) is a border housing (401), which is arranged at the edge of the front face (22), while the communication module (400) has a recess (413B), which is located in the recess of the front face (P22), when the control unit (20) is received in the receptacle and the front panel (18) is mounted on the switching unit (16), the front panel covers at least part of the recess (413B), so as to prevent the dismantling of the communication module (400) from the rest of the control unit (20).

Images