DE102022208674A1 - Modular, multi-pole series-mounted device - Google Patents

Abstract

The modular, multi-pole series-mounted device (1) according to the invention has a first device module (10) for connection to a first phase conductor, a second device module (20) for connection to a second phase conductor and a first housing module (11) and a second housing module ( 12) insulating material housing (2) formed by connecting using a first connecting means (9), the first housing module (11) being assigned to the first device module (10), and the second housing module (21) being assigned to the second device module (20). Furthermore, the multi-pole modular device (1) has a first circuit board (12), which is received and held in the first housing module (11), and a second circuit board (22), which is received and held in the second housing module (21). . The first circuit board (12) and the second circuit board (22) are connected in an electrically conductive manner by a mechanical plug connection (50), which has at least one contact element (51) and at least one contact receptacle (52) assigned to it, the first circuit board ( 12) is floatingly mounted in the first housing module (11) in a first direction (x) and in a second direction (y) oriented orthogonally to the first direction (x). The floating mounting of the first circuit board effectively prevents mechanical overdetermination of the joining partners, i.e. the plug connection (50) and the circuit boards 10, 20 connected to it.

Description

The invention relates to a modular, multi-pole series-mounted device with a first device module for connection to a first phase conductor, a second device module for connection to a second phase conductor and an insulating material housing formed from a first housing module and a second housing module, the first housing module being the first device module, and the second housing module is assigned to the second device module.

Electromechanical protective switching devices - for example circuit breakers, circuit breakers, residual current circuit breakers and arc or fire protection switches - are used to monitor and protect an electrical circuit and are used in particular as switching and safety elements in electrical energy supply and distribution networks. To monitor and protect the electrical circuit, the protective switching device is electrically connected via two or more connection terminals to an electrical line of the circuit to be monitored in order to interrupt the electrical current in the respective monitored line if necessary. For this purpose, the protective switching device has at least one switching contact, which can be opened when a predefined condition occurs - for example when a short circuit or a fault current is detected - in order to isolate the monitored circuit from the electrical line network. Such protective switching devices are also known as series-mounted devices in the field of low-voltage technology.

Circuit breakers are specifically designed for high currents. A circuit breaker (so-called LS switch), which is also known as a “miniature circuit breaker” (MCB), represents a so-called overcurrent protection device in electrical installations and is used in particular in the area of low-voltage networks. Circuit breakers and circuit breakers guarantee safe switching off in the event of a short circuit and protect consumers and systems from overload, for example from damage to the electrical cables due to excessive heating as a result of an excessively high electrical current. They are designed to automatically switch off a circuit to be monitored in the event of a short circuit or an overload and thus isolate it from the rest of the line network. Circuit breakers and circuit breakers are therefore used in particular as switching and safety elements for monitoring and securing an electrical circuit in electrical energy supply networks. Circuit breakers are from the literature DE 10 2015 217 704 A1 , EP 2 980 822 Al, DE 10 2015 213 375 A1 , DE 10 2013 211 539 A1 or EP 2 685 482 B1 in principle already known.

To interrupt a single phase line, a single-pole circuit breaker is usually used, which usually has a width of one pitch unit (corresponds to approx. 18mm). For three-phase connections, three-pole circuit breakers are used (as an alternative to three single-pole switching devices), which have a width of three pitch units (corresponds to approx. 54mm). Each of the three phase conductors is assigned a pole, i.e. a switching point. If the neutral conductor is to be interrupted in addition to the three phase conductors, one speaks of four-pole devices, which have four switching points: three for the three phase conductors and one for the common neutral conductor.

A residual current circuit breaker is a protective device to ensure protection against a dangerous residual current in an electrical system. Such a fault current - which is also referred to as a differential current - occurs when a live part of the line has electrical contact with earth. This is the case, for example, when a person touches a live part of an electrical system: in this case the current flows as a residual current through the person's body towards grounding. To protect against such body currents, the residual current circuit breaker must quickly and safely disconnect all poles of the electrical system from the line network when such a residual current occurs. In general usage, instead of the term “residual current circuit breaker”, the terms FI circuit breaker (in short: FI switch), residual current circuit breaker (in short: DI switch) or RCD (for “Residual Current Protective Device”) are used equivalently.

Arc or fire protection switches are used to detect arc faults that can occur at a defective point on an electrical cable - for example a loose cable clamp or due to a cable break. If the arc fault occurs electrically in series with an electrical consumer, the normal operating current is usually not exceeded because it is limited by the consumer. For this reason, the arc fault is not detected by a conventional overcurrent protection device, such as a fuse or a circuit breaker. To determine whether an arc fault is present, the fire protection switch measures both the voltage curve and the current curve over time and analyzes and evaluates them with regard to the curves characteristic of an arc fault. In the In specialist literature, such protective devices for detecting arc faults are referred to as “Arc Fault Detection Devices” (abbreviated: AFDD). The term “Arc Fault Circuit Interrupter” (abbreviated: AFCI) is common in North America.

There are also device designs in which the functionality of a residual current circuit breaker is combined with the functionality of a circuit breaker: such combined protective switching devices are referred to in German as FI/LS or in English-speaking countries as RCBO (for Residual current operated Circuit-Breaker with Overcurrent protection). . Compared to separate residual current and circuit breakers, these combination devices have the advantage that each circuit has its own residual current circuit breaker: Normally a single residual current circuit breaker is used for several circuits. If a fault current occurs, all protected circuits are switched off. By using RCBOs, only the affected circuit is switched off.

There is a tendency to integrate more and more functionalities into the devices, i.e. combined protective switching devices are being developed which cover the functional scope of several individual devices: in addition to the FI/LS protective switching devices already described above, which have the functional scope of a conventional residual current circuit breaker (FI) with the of a circuit breaker (LS), there are other designs in which, for example, the functionality of a fire protection switch is integrated into existing devices such as MCB, RCD or RCBO/FILS. This upgrade of electromechanical protective switching devices with additional digital functions requires optimal use of space while the electronic components are often difficult to assemble. Individual circuit boards and electronic components are often distributed in widely scattered installation spaces and must be electrically connected to one another.

In order to limit or reduce the resulting large number of modular devices for a wide variety of applications - and thus the manufacturing costs of the individual devices - an attempt is made to construct the devices modularly according to the modular principle: In a modularized structure, systems are assembled from components along defined interfaces. The protective switching devices to be formed from the modular system are divided into different assemblies or components, which are referred to as modules, and the interfaces of the individual modules to one another are precisely defined. With a suitable form and function, different protective switching devices can then be formed from the different modules, with the selected modules interacting with one another via the predefined interfaces.

It is the object of the present invention to provide a modular, multi-pole series-mounted device which is characterized by a simplified modular structure while being easy to assemble.

This object is achieved according to the invention by the modular, multi-pole series installation device according to claim 1. Advantageous refinements are the subject of the dependent claims.

The modular, multi-pole series-mounted device according to the invention has a first device module for connection to a first phase conductor, a second device module for connection to a second phase conductor and an insulating material housing formed from a first housing module and a second housing module by connecting using a first connecting means, the first housing module the first device module, and the second housing module is assigned to the second device module. Furthermore, the multi-pole series-mounted device has a first circuit board, which is received and held in the first housing module, and a second circuit board, which is received and held in the second housing module. The first circuit board and the second circuit board are electrically conductively connected by a mechanical plug connection, which has at least one contact element and at least one contact receptacle assigned to it, the first circuit board in the first housing module in a first direction (x) and in a direction relative to the first direction (x) orthogonally oriented second direction (y) is floating.

Both the first and second housing modules, and thus the insulating material housing, as well as the first and second device modules, and thus the modular, multi-pole series-mounted device have a front side, a fastening side opposite the front side and first and second narrow strips connecting the front side and the fastening side. and broadsides. The term “housing module” refers to a modular part of the insulated housing. If the device module in question is equipped with the required components, the correspondingly equipped housing module is referred to as a “device module”, whereby each device module is assigned to a pole. Several device modules then form the modular multi-pole modular device.

Both the first device module and the second device module are each designed as a single-pole Lei circuit breaker and has its own housing module, which is clearly assigned to the respective device module, in which there is a short-circuit tripping device for interrupting the electrical current flowing over the respective, ie the first or second, phase conductor in the event of an electrical short circuit, as well as an overload tripping device to interrupt the electrical current flowing via the respective assigned, ie first or second phase conductor in the event of an electrical overload, ie are arranged and held. By combining the first device module with the second device module, that is, by connecting the first housing module with the second housing module to the insulating material housing using the first connecting means, for example rivets or screws, a two-pole circuit breaker is formed, to which a first phase conductor (on the first Device module) and a second phase conductor (on the second device module) can be connected.

In each of the two housing modules, i.e. in the first housing module and in the second housing module, a circuit board, the first circuit board and the second circuit board, is arranged, which are connected to one another in an electrically conductive manner using the mechanical plug connection. For this purpose, the at least one contact is attached to one of the circuit boards and the at least one contact element is attached to the other circuit board. The at least one contact element can be formed by one or more contact pins, so-called PINs, which are inserted into socket-like openings in the contact receptacle when the two housing modules are connected. If both circuit boards are stored in a specific manner in their respective housing module, the use of a rigid mechanical plug connection leads to an overdetermination of the storage and thus to mechanical stress on the circuit boards. Furthermore, unfavorable tolerance chains can also lead to assembly problems - especially in automated production.

In order to avoid such a mechanical overdetermination of the joining partners - i.e. the contact elements and the contact holder, and thus the first and second circuit board - when creating the mechanical plug connection, i.e. when inserting the contact pins into the contact receptacle, the first circuit board is in the first direction as well floating in the second direction, i.e. transversely displaceable or indefinitely, i.e. with play in the first or second direction, stored in the first housing module. The second circuit board is mounted in the first of the second directions, i.e. without play, in the second housing module 12. In this way, manufacturing tolerances can be compensated for and mechanical overdetermination when storing the two circuit boards, which can lead to bending and shearing forces on the components of the mechanical plug connection and the circuit boards - and thus to their damage - can be effectively avoided.

In an advantageous development of the modular, multi-pole series-mounted device, the contact of the plug connection is arranged on the first circuit board, and the contact element of the plug connection is arranged on the second circuit board.

By arranging the contact on the first circuit board, the contact is also floating in the first and second directions in the first housing module. Accordingly, the contact element, which can include a plurality of contact pins, is mounted together with the second circuit board without play in the second housing module. This significantly simplifies the production of the mechanical plug connection when assembling the first and second housing modules to form the insulating material housing, and thus the first and second device modules to form the modular, multi-pole series-mounted device.

In a further advantageous development of the modular, multi-pole series-mounted device, the plug connection has a centering aid which aligns the first circuit board relative to the first housing module.

By using the centering aid, inserting the at least one contact element into the contact can be significantly simplified. The centering aid is advantageously arranged around the contact in order to effectively prevent incorrect insertion of the contact elements next to the contact.

In a further advantageous development of the modular, multi-pole series-mounted device, the centering aid is mechanically connected to the first housing module via at least one resilient element. In this way, the floating mounting of the first circuit board is ensured, so that manufacturing-related tolerances can be compensated and the insertion of the at least one contact element into the contact socket can be made easier.

In a further advantageous development of the modular, multi-pole series-mounted device, the centering aid has inlet slopes.

In this way, the insertion of the at least one contact element into the contact socket can be further simplified. A misplacement as well as the possible associated damage, for example bending or breaking of the at least one contact element, are thereby effectively avoided.

In a further advantageous development of the modular, multi-pole series-mounted device, the first housing module has a fixing element which fixes the first circuit board in the third direction by attaching the first connecting means acting in a third direction orthogonal to the first and second directions.

When the first and second device modules are joined together along the third direction, the mechanical plug connection, which electrically conductively connects the first to the second circuit board, is first formed. The floating storage of the first circuit board is crucial here in order to avoid mechanical stresses due to overdetermined storage of the two circuit boards. To complete the joining process along the third direction, i.e. towards the end of the path, after the at least one contact element has been inserted into the associated contact receptacle, the first circuit board is pressed by the fixing element in the third direction against an inner contour of the first housing module and thus in the third Directionally fixed in a form-fitting manner. Depending on the pressure force, a frictional fixation of the first printed circuit board, which is now mounted largely stress-free, in the first or second direction can also be achieved. In this way, the first circuit board is securely received and held in the first housing module.

In a further advantageous development of the modular, multi-pole series-mounted device, the first housing module has a wall opening for receiving the contact receptacle arranged on the first circuit board.

The wall of the housing module securely protects the parts and components of the first device module arranged therein from external environmental influences and from the second device module arranged adjacently. The wall opening formed in the wall serves exclusively to implement the mechanical plug-in connection between the first circuit board arranged in the first housing module and the second circuit board arranged in the second housing module.

In a further advantageous development, the modular, multi-pole series-mounted device has a third device module for connection to a third phase conductor, the third device module having a third housing module, which is arranged between the first housing module and the second housing module.

The third device module arranged between the first and the second device module is also designed as a single-pole circuit breaker and has its own housing module, which is clearly assigned to it, in which a short-circuit tripping device and an overload tripping device for interrupting the electrical current flowing via the third phase conductor In the event of an electrical short circuit or an electrical overload, they are arranged, i.e. recorded and held. The third housing module can be connected using the first connecting means, for example rivets or screws, which creates a three-pole insulating housing for a modular, three-pole series-mounted device. To form a four-pole FI/LS or RCBO protective switching device, an additional RCD module, which is equipped with the components of a residual current circuit breaker, can be attached to the outer broad side of the second device module, so that 3 phase conductors and a neutral conductor are connected to the four-pole protective switching device and can be monitored for short circuits, electrical overloads and earth fault currents.

In a further advantageous development of the modular, multi-pole series-mounted device, the third device module has a third circuit board arranged in the third housing module, which is floating in the first direction and the second direction and has a further contact, which has a position in the first and second direction the second direction correlates with the position of the contact receptacle arranged on the first printed circuit board, so that the at least one contact element arranged on the second printed circuit board can be passed through the further contact receptacle in order to be electrically conductively connected to the contact receptacle arranged on the first printed circuit board.

In this way, overdetermined storage of the third circuit board is also effectively avoided. When the at least one contact element is passed through the further contact, electrical contacting of the third circuit board can also be achieved, for example in order to supply it with the required electrical energy.

In a further advantageous development of the modular, multi-pole series-mounted device, each of the housing modules has a width of one division unit. In this way it is ensured that the width dimension of the modular, multi-pole series installation council corresponds to the standard locking dimension for the width of such modular devices.

• 1 schematische Darstellung eines erfindungsgemäßen, aus mehreren Gerätemodulen gebildeten, mehrpoligen Reiheneinbaugerätes in perspektivischer Ansicht;
• 2 eine schematische Darstellung des geöffneten ersten Gerätemoduls in perspektivischer Ansicht;
• 3 eine schematische Darstellung des vormontierten ersten und zweiten Gerätemoduls in perspektivischer Ansicht;
• 4 eine schematische Darstellung eines weiteren Montageschritts des vormontierten ersten und zweiten Gerätemoduls in perspektivischer Ansicht;
• 5 eine schematische Darstellung eines weiteren Ausführungsbeispiels des aus mehreren Gehäusemodulen gebildeten, mehrpoligen Reiheneinbaugerätes.

Various exemplary embodiments of the modular, multi-pole series-mounted device are explained in more detail below with reference to the attached figures. In the figures are:

• 1 Schematic representation of a multi-pole modular device according to the invention, formed from several device modules, in a perspective view;
• 2 a schematic representation of the opened first device module in a perspective view;
• 3 a schematic representation of the pre-assembled first and second device modules in a perspective view;
• 4 a schematic representation of a further assembly step of the pre-assembled first and second device modules in a perspective view;
• 5 a schematic representation of a further exemplary embodiment of the multi-pole modular device formed from several housing modules.

In the various figures of the drawing, the same parts are always provided with the same reference numerals. The description applies to all drawing figures in which the corresponding part can also be recognized.

In 1 The basic structure of a modular, multi-pole modular device 1 according to the invention is shown schematically. The multi-pole modular device 1 has a front side 3, a fastening side 4 arranged opposite this, as well as the narrow sides 5 and broad sides 6 connecting the front side and the fastening side 3, 4 and is designed as a four-pole FI / LS or RCBO, which, however, is only an example here Possible device structure is intended to serve: two- and three-pole (modular) series-mounted devices, regardless of their functional scope, can also be the subject of the invention.

This in 1 The modular device 1 shown is made up of a first device module 10 for connecting a first phase conductor, a second device module 20 for connecting a second phase conductor, a third device module 30 for connecting a third phase conductor and a fourth device module 40 for connecting a neutral conductor, which are broadside to broadside next to each other are arranged.

Each of the device modules 10, 20, 30, 40 has its own housing module: the first device module 10 is assigned a first housing module 11, the second device module 20 is assigned a second housing module 21, the third device module 30 is assigned a third housing module 31 and the fourth device module 40 is a fourth housing module 41, whereby all device modules 10, 20, 30, 40 and all housing modules 11, 21, 31, 41 also have a front side 3, a fastening side 4 arranged opposite this, and narrow sides 5 connecting the front side and the fastening side 3, 4 and broadsides 6. Furthermore, all housing modules 11, 21, 31, 41 - and thus all device modules 10, 20, 30, 40 - have a width B of only one division unit (TE), corresponding to approximately 18mm or 0.75 inches. The four housing modules 11, 21, 31, 41, which are arranged next to each other broadside to broadside and are held together by means of first connecting means, which are shown here as rivets 9, form an insulating material housing 2 of the modular, four-pole series-mounted device 1.

In principle, housings with a narrow design, ie with a width of only one division unit, have two half-shells, which are joined together towards the end of the assembly process using suitable connecting means, for example rivets, screws or snap-in connections, forming a circumferential joining line. Each half-shell includes one of the broad sides 6 as well as parts (entirely or completely) of the front, fastening and narrow sides 3, 4, 5. The in 1 The housing modules 11, 21, 31 and 41 shown are designed in a narrow design, which are first fitted during assembly before the individual housing modules 11, 12, 13 and 14 are assembled into the structurally mechanically stable insulating material housing 2 of the modular, multi-pole series-mounted device 1.

In the area of each of the narrow sides 5, each of the device modules 10, 20, 30, 40 each has a screw terminal 7 for contacting with network or load-side connecting conductors - phase conductors or neutral conductors (not shown) - which are in the respective device module 10, 20, 30, 40 assigned housing module 11, 21, 31, 41 are recorded and held. For manual operation, each of the device modules 10, 20, 30, 40 has an actuation element arranged in the area of the front side 3, the individual actuation elements being connected for common actuation with the aid of a handle element 8 connecting the individual actuation elements.

Since that in 1 illustrated modular series-mounted device 1 is a four-pole FI/LS or RCBO, the three first-mentioned device modules 10, 20, and 30 are designed as MCB modules, ie as circuit breakers, and are accordingly equipped with the Components typical of a circuit breaker - for example switching mechanism, overload and short-circuit tripping device, arc quenching chamber, connection terminals, etc. - are equipped and intended for contacting the assigned phase conductor (not shown) of a three-phase energy distribution system. The fourth device module 40, on the other hand, is an RCD module (in 1 shown on the right), ie it is equipped with the components typical of a residual current circuit breaker and is intended for contacting the neutral conductor (not shown).

2 shows schematically a perspective view of the interior of the first device module 10 (MCB module) designed as a circuit breaker. The first housing module 11 has a first housing half-shell 11-1 and a second housing half-shell 11-2, which are assembled to form a circumferential joining line. In the area of the front side 3, the first device module 10 has an actuating element 14 for manually actuating a switching contact (not shown) arranged in the first housing half-shell 11-1.

While the assemblies and components typical for a circuit breaker are housed in the area of the first housing half-shell 11-1, in the second housing half-shell 11-2 - separated from the first housing half-shell 11-1 by a partition - there is a first circuit board 12 in the first housing module 11 arranged. The first printed circuit board 12 is mounted in a first direction x and in a second direction y oriented orthogonally thereto in a floating manner, ie indefinitely or transversely displaceable, in the first housing module 11, so that its storage in the first and second directions x, y has a certain has play. In a third direction z, oriented orthogonally to the first and second directions x, y, the first circuit board 12 is only passed through the second device module 20 (see 3 ) is fixed with the help of a fixing element (not shown) arranged on the second housing module 21. A possible fixing element is, for example, a housing contour formed on the second housing module 21, which presses the first circuit board in the third direction z against a bearing contour formed on the first housing module 11 after the two housing modules 11 and 21 have been assembled.

Below the actuating element 14, ie in the direction of the fastening side 4, a contact receptacle 52 is arranged on the first circuit board 12. The contact receptacle 52 is part of a mechanical plug connection 50 and is formed by a block with several socket-like openings into which contact pins 51 (see 4 ) can be inserted in order to connect them to the first circuit board 12 in an electrically conductive manner.

3 shows schematically a perspective view of the pre-assembled first and second device modules 10, 20. In order to enable a view of the interior of the housing, part of the front narrow side 5 has been omitted. The second housing module 21 is also formed in a shell construction from a first housing half-shell 21-1 and a second housing half-shell 21-2. In the area of the front 3, the second device module 20 has an actuating element 24 for manual actuation.

The first housing module 11 and the second housing module 21 are separated by a partition 19 arranged between the two housing modules 11, 21 in order to separate the first circuit board 12 arranged inside the second housing half-shell 11-2 of the first housing module 11 from the inside of the first housing half-shell 21 -1 of the second housing module 21 to protect components of the second device module 20. In the area of the contact receptacle 52, the partition 19 has a wall opening 13 through which the contact receptacle 52 attached to the first circuit board 12 is partially passed in order to allow the contact pins 51 to be inserted (see 4 ) - and thus to enable contacting of the first circuit board 12 out of the second housing module 21. Since the first circuit board 12 is mounted floating in the first housing module 11, ie with play in the first and second directions, x, y, the contact receptacle 52 in the wall opening 13 also has a corresponding play in order to ensure a mechanically overdetermined storage - and thus to avoid possible damage to the first circuit board.

4 shows schematically a further assembly step of the pre-assembled first and second device modules 10, 20 - again in a perspective view. In the second housing half-shell 21-2 of the second housing module 21, a second circuit board 22 is arranged, on which a further contact receptacle 52 is fastened in the third direction z in order to electrically conductively connect a further, third circuit board to the second circuit board 22.

In the direction opposite to the third direction z, the second circuit board 22 has a plurality of contact elements 51, which are shown in the illustration 4 designed as contact pins and inserted into the socket-shaped openings of the contact receptacle 52 arranged on the first circuit board 12, in order in this way to realize an electrically conductive connection between the first circuit board 12 and the second circuit board 22. The contact elements 51 together with the contact receptacle 52 thus form an electromechanical plug connection 50.

If the arrangement is to be supplemented by a third housing module, and if a further, third circuit board is arranged in this third housing module, then this third circuit board could be electrically conductively connected to the first and/or the second circuit board 12, 22. This can be done in that the third circuit board has one or more contact elements 51, which are arranged on the third circuit board in the direction opposite to the third direction z and are inserted into the socket-like openings of the further contact receptacle 52 when the third device module is mounted on the second device module . Alternatively, longer contact elements 51 arranged on the third circuit board can be passed through the socket-like openings of the further contact receptacle 52 and inserted into the contact receptacle 52 arranged on the first circuit board 12, thereby making contact between the third circuit board and the first circuit board 12 can also be implemented with the second circuit board 22.

The last printed circuit board, which is contacted in this way with the previous printed circuit boards, should be stored in the housing module 21, 31, 41 assigned to it without play, i.e. with certainty, since this last printed circuit board supports the storage of the entire printed circuit board arrangement, i.e. all of them in this way interconnected circuit boards 12, 22, etc., which are accommodated in the different housing modules 11, 21, 31, 41. In the case of a two-pole modular device, this would be the second circuit board 22 arranged in the second housing module 21. In this way, it is possible to avoid mechanically overdetermined storage of one or more of the circuit boards 12, 22, which could lead to mechanical stress and, as a result, possible damage to the individual circuit boards or the mechanical plug connections 50 - and thus possibly to the failure of certain functions of the modular device 1 - can lead.

5 shows a schematic representation of a further exemplary embodiment of the multi-pole modular device 1 formed from several device modules. Analogous to 2 also shows 5 a perspective view of the interior of the first device module 10 (MCB module), which is designed as a circuit breaker. In contrast to the representation of the 2 indicates the in 5 illustrated embodiment has a centering aid 53, which is arranged around the contact receptacle 52 arranged on the first circuit board 12. The centering aid 53 has a substantially cuboid base body with a through opening in which the contact receptacle 52 is accommodated without play.

The centering aid 53 serves to facilitate the insertion of the contact elements 51 into the contact receptacle 52. For this purpose, the centering aid 53 has inlet bevels 55, which slope down towards the through openings on the side of the cuboid base body facing the contact elements 51 and in this way facilitate the insertion of the contact elements 51 into the socket-like openings of the contact receptacle 52 by having them on the inlet bevels 55 when inserted slide off and hit the socket-like openings assigned to them.

With the help of the centering aid 53, the first circuit board 12 is aligned relative to the first housing module 11. For this purpose, the centering aid 53 has two elongated, elastic elements 54 which are molded onto the cuboid base body and which are fastened to the first housing module 11 at their distal end. Due to the flexibility of the two elastic elements 54, tensions which act on the first circuit board 12 or the mechanical plug connections 50 can be compensated for - the two elastic elements 54 thus act as flexible spring arms. By using the centering aid 53, incorrect insertion of one or more of the contact elements 51 into a gap formed by the wall opening and the contact receptacle 52 is also effectively avoided.

However, the two elastic elements 54 of the centering aid 53 are not absolutely necessary - in the sense of the invention. It would also be possible to dispense with the two elastic elements 54. This would result in the first circuit board 12 being mounted somewhat more freely in the first housing module 11, whereby an overdetermined storage of the first circuit board 12 could be reliably avoided, particularly in the case of large manufacturing tolerances.

Reference symbol list

1

Modular device

2

Insulated housing

3

Front

4

Fastening side

5

narrow side

6

Broadside

7

screw terminal

8th

handle element

9

rivet

10

first device module

11

first housing module

11-1

first housing half-shell

11-2

second housing half-shell

12

first circuit board

13

Wall opening

14

Actuator

19

partition wall

20

second device module

21

second housing module

21-1

first housing half-shell

21-2

second housing half-shell

22

second circuit board

30

third device module

31

third housing module

40

fourth device module

41

fourth housing module

50

Plug connection

51

Contact element

52

contact

53

Centering aid

54

elastic element

55

inlet slopes

x

first direction

y

second direction

e.g

third direction

b

Width

TE

Division unit

QUOTES INCLUDED IN THE DESCRIPTION

This list of documents listed by the applicant was generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• DE 102015217704 A1 [0003]
• EP 2980822 [0003]
• DE 102015213375 A1 [0003]
• DE 102013211539 A1 [0003]
• EP 2685482 B1 [0003]

Claims (10)

Modular, multi-pole series-mounted device (1), comprising: - a first device module (10) for connection to a first phase conductor and a second device module (20) for connection to a second phase conductor, - an insulating material housing (2) formed from a first housing module (11) and a second housing module (21) by connecting them using a first connecting means (9), the first housing module (11) being the first device module (10), and the second housing module ( 21) is assigned to the second device module (20), - a first circuit board (12), which is received and held in the first housing module (11), and a second circuit board (22), which is received and held in the second housing module (21), the first circuit board (12) and the second printed circuit board (13) is connected in an electrically conductive manner by a mechanical plug connection (50), having at least one contact element (51) and at least one contact receptacle (52) associated therewith, the first printed circuit board (12) in the first housing module (11) in a first direction (x) and in a second direction (y) oriented orthogonally to the first direction (x). Modular, multi-pole series installation device (1). Claim 1 , wherein the contact receptacle (52) of the plug connection (50) is arranged on the first circuit board (12), and the contact element (51) of the plug connection (50) is arranged on the second circuit board (22). Modular, multi-pole series installation device (1). Claim 2 , wherein the plug connection (50) has a centering aid (53) which aligns the first circuit board (12) relative to the first housing module (11). Modular, multi-pole series installation device (1). Claim 3 , wherein the centering aid (53) is mechanically connected to the first housing module (11) via at least one elastic element (54). Modular, multi-pole series-mounted device (1) according to one of the Claims 3 or 4 , wherein the centering aid (53) has inlet slopes (55). Modular, multi-pole series-mounted device (1) according to one of the preceding claims, wherein the first housing module (11) has a fixing element which acts by attaching the first third direction (z) which acts in a first (x) and second direction (y) orthogonal Connecting means (9) fixes the first circuit board (12) in the third direction (z). Modular, multi-pole series-mounted device (1) according to one of the preceding claims, wherein the first housing module (11) has a wall opening (13) for receiving the contact receptacle (52) arranged on the first circuit board (12). Modular, multi-pole series-mounted device (1) according to one of the preceding claims, comprising: a third device module for connection to a third phase conductor, the third device module having a third housing module which is arranged between the first housing module (11) and the second housing module (21). Modular, multi-pole series installation device (1). Claim 8 related back to Claim 2 , wherein the third device module has a third circuit board arranged in the third housing module, which is floatingly mounted in the first direction (x) and the second direction (y) and has a further contact, which has a position in the first and second directions ( x,y) correlates with the position of the contact receptacle (52) arranged on the first printed circuit board (12), so that the at least one contact element (51) arranged on the second printed circuit board (22) can be passed through the further contact receptacle in order to communicate with it to be connected in an electrically conductive manner to the contact receptacle (52) arranged on the first circuit board (12). Modular, multi-pole series-mounted device (1) according to one of the preceding claims, wherein each of the housing modules (11, 12) has a width (B) of one division unit (TE).

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