MOUNTING RAIL FOR LIGHTS OR ELECTRICAL UNITS

Abstract

A mounting rail for luminaires or electrical units comprises a mounting rail profile (5) with two side walls, one or more busbars (10, 20, 30) having several essentially parallel, contactable conductors (11, 21, 31), and feed-in means (40) for electrically connecting the busbar(s) (10, 20, 30) to external power supply means (50). The feed-in means (40) are configured such that the conductors (11, 21, 31) of the busbars (10, 20, 30) are connected to the external power supply means (50) in such a way that the conductors (11, 21) form at least two pairs of conductors, each forming a power supply circuit with a neutral conductor and a phase conductor of a multi-phase power supply circuit, wherein the two conductors (11, 21, 31) of a single pair of conductors are arranged in the same relation to each other.

Description

[0001] The present invention relates to a mounting rail according to the preamble of claim 1, which has a mounting rail profile with conductor rails arranged therein and is intended for connecting luminaires or other electrical units. In particular, this can be a mounting rail with which a continuous lighting system is formed.

[0002] Mounting rail systems with an elongated support profile rail and at least one conductor rail held in the support profile rail are known from the prior art and are used, for example, to implement elongated continuous lighting systems. A known continuous lighting system is marketed by the applicant under the name "TECTON" and is characterized by the fact that luminaires or other electrical units can be flexibly positioned along the entire length of the system on the mounting rail. This is made possible by a special mounting of the conductors of the conductor rail(s), which allows them to be accessible to the consumers along essentially the entire length of the continuous lighting system, so that contact with the conductors can be made not only at fixed positions but at any point. Such a continuous lighting system is shown, for example, in WO 2001 / 091250 A1.

[0003] In the aforementioned "TECTON" system, two busbars are arranged opposite each other on the two side walls of a downward-facing, U-shaped mounting rail. The conductors of these two busbars are connected by a rotating contact element on the luminaire or, more generally, the device to be connected. This contact element is inserted into the mounting rail from below through its elongated coupling opening and then rotated approximately 45°. The contacts on the contact element are designed so that they pivot laterally when the element is rotated, ultimately making contact with the busbar conductors in the rotated position. Simultaneously, a mechanical locking mechanism is engaged, ensuring that the luminaire or device is reliably fixed to the mounting rail.

[0004] At least some of the contacts of the known contacting element are adjustable. This is achieved by the contacting element having a contact holder body that serves to hold the various contacts, with at least some contacts being height-adjustable on the contact holder body or being able to be arranged at different heights on the contact holder body. The ability to position individual contacts at different heights allows them to be selected to specifically contact certain conductors of the busbar(s). For example, this makes it possible to select specific phases of a power supply network for contact by the light fixture or the electrical unit.

[0005] While these flexible connection options for implementing individual power supplies for the connected lights or electrical units offer a high degree of flexibility in the overall system design, they also increase the risk of incorrect connections to individual conductors on the busbar(s). Connecting a light to a specific power circuit or phase requires the customer or end user to correctly position both the phase connector and the corresponding neutral connector on the contact element. Failure to do so will result in incorrect connections between different circuits, potentially leading to unwanted short circuits and damage to one or more system components.

[0006] The present invention is therefore based on the objective of offering an improved solution that enables the customer to connect a light fixture or an electrical unit to such a mounting rail in a relatively simple manner and thereby avoid errors in the connection to the power supply.

[0007] The problem is solved by a support rail having the features of claim 1. Advantageous embodiments of the invention are the subject of the dependent claims.

[0008] The solution according to the invention is based on the idea of ​​establishing a fixed pairing of the conductors intended for supplying power to the luminaire and electrical units to be connected to the mounting rail. When connecting the busbar to the external power supply, the conductors of the busbars arranged in a mounting rail profile are arranged in such a way that at least two pairs of conductors are formed, which – apart from a conductor that may be provided additionally for grounding – each form their own power supply circuit, with the two conductors of each individual conductor pair being arranged in the same relation to each other.This specific wiring configuration and arrangement for the power supply means that, instead of a traditional phase selection system (where a separate plug for the neutral conductor must be placed in a specific first position and a separate phase selection plug in a further position for selecting the desired phase), the customer now only needs to move a specially designed contact pair. While the fixed assignment of the conductor pairs means that it is still possible to accidentally connect an unintended phase or circuit (e.g., for emergency power), the possibility of incorrectly connecting conductors belonging to different phases or power supply circuits, which could potentially lead to a short circuit or damage to individual components, is eliminated.

[0009] According to the present invention, a mounting rail for lights or electrical units is proposed, wherein the mounting rail comprises: • a support rail profile with two opposing side walls and a connecting wall linking the two side walls, • one or more busbars providing several essentially parallel, contactable conductors, • Feed-in means for electrically connecting the busbar to external power supply means in order to enable a power supply for luminaires or electrical units connected to the mounting rail via the conductors of the busbar(s), wherein according to the invention the feed-in means are designed such that at least in a first configuration mode the conductors of the busbar(s) are connected to the external power supply means in such a way that at least two pairs of conductors are formed by the conductors of the busbar(s), each of which forms a power supply circuit with a neutral conductor and a phase conductor of a multi-phase power supply circuit, wherein the two conductors of a single pair of conductors are arranged in the same relation to each other.

[0010] Several possibilities exist regarding the arrangement of the busbar(s) and the associated conductors. In a first embodiment, a busbar with several essentially parallel, contactable conductors is arranged on each of the inner sides of the two side walls of the mounting rail profile. In this case, it can be provided that, in the first configuration mode of the power supply, the two conductors of a single conductor pair run along the opposing busbars, the conductors of a single conductor pair preferably being arranged opposite each other, and in particular symmetrically, with respect to a longitudinal center plane of the mounting rail profile. This allows the corresponding contact element with the two contacts for connecting to the associated conductors of a power supply circuit to be designed relatively simply.In a second embodiment, it can be provided that a busbar with several essentially parallel contactable conductors is arranged on the connecting wall of the mounting rail profile, wherein the at least two pairs of conductors with a neutral conductor and an associated phase conductor are provided by the conductors of this busbar arranged on the connecting wall.

[0011] Analogous to solutions known from the prior art, a flexible means of contacting the conductors should be provided, particularly one that extends over the entire length of the mounting rail. Specifically, it can be provided that the conductors of the busbar(s) are mounted in conductor support profiles made of an insulating material, which form open grooves or channels on one side for contact. According to a first variant, the conductors of the busbar(s) then run in a common plane, with each conductor individually mounted in a groove or channel of the conductor support profiles.In a second variant, the conductors of the conductor pairs formed in the first configuration mode of the feed-in devices are arranged in different planes, in particular in two planes spaced perpendicular to each other, with the neutral conductors in a first plane and the phase conductors in a second plane. Here, the conductors forming the conductor pairs can each be individually mounted in a groove or channel of the conductor support profiles, or the two conductors of a conductor pair can be mounted together in a groove or channel, in particular on the opposing side walls of a groove or channel.

[0012] Preferably, it can be provided that in the first configuration mode of the power supply device, the conductors of the busbars form three conductor pairs for a corresponding phase selection.

[0013] Therefore, the total number of conductors on the busbar(s) intended for power supply will be odd if, in the first configuration mode of the power supply, a single conductor forms an earthing conductor and all other conductors are assigned to conductor pairs according to the invention, each forming a power supply circuit with a suitable phase selection. If, however, the system's earthing is implemented differently, i.e., not via a conductor on the busbar(s), an even number of conductors for power supply results.

[0014] In the first configuration mode, the power supply devices are designed to bridge an input neutral conductor of the external power supply to one conductor of each pair for phase selection. Compared to the prior art busbar conductor configuration, there are now multiple neutral conductors. While this may reduce the overall number of available connection options, it offers the significant advantage described above: connecting to a desired power supply circuit for the consumer is considerably simpler and reduces the risk of faulty connections to individual conductors.

[0015] The arrangement of the conductors of the busbar(s) according to the invention, such that simplified contacting of power supply circuits by luminaires or electrical units is achieved, is particularly accomplished using the aforementioned feed-in devices, which are responsible for the connection to external power supply lines. It is entirely possible that, in addition to the configuration mode according to the invention, the feed-in devices can also be operated in a second configuration mode, in which a conventional arrangement of the conductors is present, so that a luminaire or an electrical unit can be connected to the mounting rail in the conventional manner, including phase selection.Accordingly, the power supply devices can preferably also be operated in a second configuration mode in which a single conductor of the busbar(s) forms a neutral conductor of a multi-phase power supply circuit and at least two other conductors form associated phase conductors.

[0016] According to the present invention, a luminaire or an electrical unit for connection to a mounting rail as described above is also proposed, wherein the luminaire or electrical unit has a contacting element which has a contact holder body with several connection contacts, wherein at least two connection contacts intended for connection to a power supply circuit are grouped together and mounted on the contact holder body in such a way that they are adjustable only in a fixed relation to each other relative to the contact holder body.The contact holder body can be adjustable between an open position, in which at least partial insertion and removal of the contact element from the mounting rail profile is possible, and a contact position, in which the connection contacts make contact with the conductors of the busbar arranged on the side walls of the mounting rail profile. If, however, a busbar with the conductors used for power supply is arranged on the connecting wall of the mounting rail profile, the contact element is designed such that the contact holder body moves linearly towards the busbar when the luminaire or load is connected. Preferably, it can also be provided that a contact element intended for grounding is fixedly attached to the contact element.

[0017] Finally, according to the present invention, a continuous lighting system is proposed which includes a support rail as designed above and a corresponding light or electrical unit.

[0018] The invention will now be explained in more detail with reference to the accompanying drawing. The drawing shows: Fig. 1 schematically the inventive procedure for contacting the conductors of busbars in order to achieve connection to a power supply circuit; Fig. 2 a configuration of the various conductors of the busbars within a mounting rail profile as provided for in accordance with the present invention; Fig. 3. A first possibility for connecting the conductors of the busbars to external power supply lines; Fig. 4. Another way to connect the busbar conductors to external power supply lines; Fig. 5 and Fig. 6 two further possibilities according to the invention for the arrangement and contacting of the conductors of a busbar; Fig. 7 - 10 views of a mounting rail system with a contacting element according to the state of the art and Fig. 11 the assignment of conductors of busbars in a classical phase selection as provided for in the state of the art.

[0019] As already mentioned, the present invention represents, for example, a further development of the known system "TECTON". Before the solution according to the invention is described in more detail, it will therefore be explained below using the following examples: Fig. 7 - 10 first explain the basic design of such a support rail system. Fig. 7 and Fig. Figure 8 shows views of the mounting rail in which the busbars are arranged. Fig. 9 and Fig. Figure 10 shows the design of a luminaire connected or to be connected to this mounting rail system with a contacting element provided for this purpose.

[0020] It is immediately apparent that the known support rail system 100 uses an elongated, U-shaped support profile rail 101, open at the bottom, which, with its two side walls 102 and the upper connecting wall 103, defines an elongated receiving space accessible from below via an elongated coupling opening. In the illustrated case, a so-called conductor rail 110 or 120 is arranged on the inner sides of each of the two side walls 102 (in Fig. Figure 8, which only shows the support profile rail 101 (these are not visible), each of which has several longitudinally running wires or conductors 111, 121 arranged in elongated channels or grooves 113, 123 of a conductor receiving structure 112, 122 made of an insulating material. The channels 113, 123 ensure the secure storage of the conductors 111, 121 in such a way that they cannot be accidentally touched. At the same time, however, the channels 113, 123 are each open to the interior of the support profile rail 101, so that contact with the conductors 111, 121 is possible.

[0021] A luminaire 130 to be connected to this mounting rail system 100 then has at least one rotatably mounted contact or tap element 135, as is found in particular in the Fig. 9 and Fig. 10 is recognizable. To connect the luminaire 130, it is attached to the elongated support profile rail 101 from below, whereby the contacting element 135 is inserted into the support profile rail 101 via the elongated coupling opening and then rotated by approximately 45°. The contacts 136 arranged on the contacting element 135 are designed such that they are pivoted laterally by the rotation and are then – as is particularly evident in Fig. 9 is recognizable - to intervene in the recording channels 113, 123 of the two busbars 110, 120 in order to contact the corresponding conductors 111, 121.

[0022] In the illustrated case, contacts 136 are arranged on both sides of the contacting element 135 to enable contact with the busbars 110, 120 positioned on both side walls 102 of the support profile rail 101. Because the contacts 136, with their associated contact holder 137 and the attached (not shown) cable, can be vertically displaced relative to a contact holder body 138 of the tap element 135, they can be positioned according to the desired conductor 111, 121, and thus made contact with that conductor as required. This allows for the selection of both the phase and the neutral conductor for the power supply. Depending on the number of conductors provided by the busbars 110, 120, these can also be used for other purposes, such as communication.This makes it possible to combine the lighting units connected to the support profile rail 101 into a larger continuous lighting system and to control the lights centrally from a central control unit.

[0023] In addition to the lighting units shown in the figures, other electrical units can also be connected to the mounting rail system. These could include sensors such as presence or brightness sensors, which support automated operation of the lighting system. Units that enable communication or data transmission independent of the lighting control system for other purposes would also be suitable for connection to the mounting rail system. Finally, a wide variety of luminaire types can be connected to the mounting rail together, fulfilling different lighting technology functions.

[0024] In the depicted system, which is known from the prior art, some of the connection contacts are positioned at a predetermined height, as they are generally intended to contact a specific conductor of the busbars 110, 120, for example, the conductor intended for grounding. However, several contacts are height-adjustable and can be positioned on the contacting element 135, as these contacts are used to select the phase for the power supply.

[0025] A typical arrangement of conductors 111, 121 of the two busbars 110, 120, as provided for in the prior art, is in Fig. Figure 11 shows the following: The conductors 111 of the left busbar 110 are initially used as the earth conductor (EARTH) and neutral conductor for two emergency power supply circuits, EN1 and EN2. Above these is the neutral conductor (N) for the general power supply. The conductors 121 of the right busbar 120 represent the corresponding conductors for the two emergency power supply circuits, EL1 and EL2, as well as the three phase conductors (L1, L2, and L3) for the general power supply.

[0026] As indicated by the two double arrows, depending on the type of power supply chosen for the connected device, the contact pointing to the left must be connected to the neutral conductor N for the general power supply or to one of the two neutral conductors for the emergency power supply EN1 and EN2. The contact pointing to the right must be connected to the conductor for the emergency power supply EL1 or EL2, or to one of the three phase conductors L1 to L3. Finally, another contact is used to connect the earth conductor (EARTH).

[0027] Depending on the position of the left-hand contact responsible for the neutral conductor connection, the height of the right-hand contact must be adjusted accordingly. This carries a risk of incorrect wiring at the tap, which can ultimately lead to faulty connections between different circuits. In the simplest case, this can result in the connected device, such as a light fixture or other electrical unit, not receiving proper power. However, there is also the risk of damaging the connected device or causing problems or damage to the entire system.

[0028] To reduce the risk of such faulty contacting of the power supply conductors, the invention provides for the different conductors of the two busbars to be arranged in such a way that a simpler, more intuitive and in particular less error-prone contacting of the power supply circuits can be achieved.

[0029] This concept is schematically represented in Fig. 1 is initially indicated by the fact that the power supply conductors 11, 21 of the two busbars 10, 20 shown here are contacted by means of a contacting part 63, which has two contacts 61 and 62 pointing in opposite directions. This contacting part 63 can, as also described in the prior art, be part of a rotatable contacting element 60, so that the contacts 61, 62 can be moved from an open position to a contacting position by corresponding pivoting, in which the contacts 61, 62 engage in the corresponding recesses 12, 22 of the conductor support profiles 13, 23 and here contact the associated conductors 11, 21 of the busbars 10, 20.

[0030] Crucially, the two contacts 61, 62 are fixedly arranged relative to each other because they are fixedly mounted on a common body of the contacting part 63, which is made of an insulating material. This means that only one corresponding pair of conductors can be contacted together at any given time. In the purely schematic representation of the Fig. In Figure 1, where it is assumed that the busbars 10 and 20 are arranged on the side walls of a U-shaped support rail profile, as in the prior art shown, only the two opposing conductors 11, 21 of the busbars 10, 20 can be contacted simultaneously, depending on the height of the contacting element 63. This opens up the possibility of simplifying the contacting process with suitable conductor configuration, a preferred variant of which is described in Fig. 2 is shown.

[0031] Only the conductors located in the lower section of the mounting rail profile 5, which are responsible for supplying power to a connected device, will be considered here. The upper section contains additional conductors that can be used for supplementary system functions, such as data transmission or other purposes. A connection method for these conductors independent of the present invention can be provided, which is why this section of the mounting rail profile 5 will not be discussed further.

[0032] In general, it should be noted that the mounting rail and, in particular, the busbars can correspond to previously known solutions in their structural design. Here too, the conductors 11, 21 of the busbars 10, 20 are preferably mounted in corresponding conductor support profiles 12, 22 made of an insulating material, which form open grooves or channels 13, 23 towards a contact side, whereby, in particular, it is again possible that the conductors 11, 21 of the busbars 10, 20 are contactable over essentially the entire length of the mounting rail.

[0033] The conductors intended for power supply are now provided in an odd number, with a first conductor, in the illustrated embodiment the lower left conductor, permanently designated as the grounding conductor (EARTH). Ideally, the corresponding contact element of a connected luminaire or other unit is designed such that this grounding conductor (EARTH) is contacted regardless of the power supply chosen, as is the case in the prior art. Alternatively, the system could be grounded in another way, thus eliminating the need for the grounding conductor (EARTH).

[0034] Apart from this earthing conductor, an equal number of conductors are provided on both sides of the mounting rail profile 5, and thus on the two busbars 10, 20. The arrangement of the conductors, which preferably run in a common plane, is chosen such that opposing conductors always form a pair, providing a corresponding power supply circuit. In the illustrated embodiment, which initially provides a phase selection function allowing a choice between three different phases of the general power supply, this means that three corresponding neutral conductors N1, N2, and N3 are provided one above the other on the left side, and correspondingly, three corresponding phase conductors L1, L2, and L3 run opposite each other on the right busbar 20.Here, the corresponding conductors N1-L1, N2-L2, and N3-L3 are arranged symmetrically to a longitudinal center plane E of the mounting rail profile 5, and in particular at the same height. However, this is not strictly necessary. What is crucial is that the conductors of each pair are arranged in a fixed relation to one another. In particular, the conductors of a pair are arranged to each other in the same way as the two contacts 61, 62 of the contacting part 63, which point in opposite directions. Fig. 1 is the case.

[0035] To select one of the three phases when connecting the load to the general power supply, it is only necessary to position the contacting part 63 with its two contacts 61 and 62 at the corresponding height. If the phase is to be changed, the contacting part 63 with both contacts 61 and 62 must again be adjusted to the corresponding height. Regardless of the phase selection, it is ensured that the two contacts 61 and 62 of the contacting part 63 always only contact corresponding conductors of the busbars 10 and 20, thus ensuring that a power supply circuit or a corresponding phase of a power supply circuit is always correctly connected. Incorrect contact, such as...It is excluded that the contact 61, intended for the neutral conductor, touches a conductor belonging to a specific circuit, while the contact 62, responsible for phase selection, touches the phase conductor of a different circuit.

[0036] It is evident from this that the contacting process is simplified in the solution according to the invention and, in particular, faulty contacts can be avoided. Furthermore, the realization of a contacting element in which two contacts are arranged in a fixed relation to each other is simpler and more cost-effective than providing a contacting element with two independently positionable individual contacts.

[0037] The question of the function of the various conductors of the busbars depends crucially on how they are connected to external power supply lines. The input connection of the mounting rail system to the external power supply therefore plays a decisive role in the realization of the concept according to the invention, with so-called feed-in devices being responsible for this. These are corresponding connection devices to which the external power supply lines and, if necessary, other lines are connected, and which then make a corresponding connection with the conductors running in the busbars.

[0038] The inventive method therefore requires that the corresponding feed-in means implement a coupling such that – as in Fig. As shown in diagram 2, three neutral conductors run one above the other on the left busbar (10), and the corresponding phase conductors run opposite them. Two possibilities for this are shown in the diagram. Fig. 3 and Fig. 4 shown.

[0039] Fig. Figure 3 shows the case where five conductors run over an external supply cable 50, consisting of an earth conductor, a neutral conductor, and the three phase conductors. In this case, it is necessary that the neutral conductor in the schematically indicated feed-in devices 40 be bridged such that the single neutral conductor N of the external power supply is connected to each of the three neutral conductors N, N', N'' of the busbar. The earth conductor and the three phase conductors, however, are connected in a 1:1 manner.

[0040] Of course, it would also be conceivable that the external power supply could provide individual neutral conductors for each of the three phases, which would then also be individually connected to the corresponding conductors of the busbar. This case is in Fig. 4 shown.

[0041] In itself, it would of course not be absolutely necessary that, as in Fig. Figure 2 shows that three neutral conductors are provided on the left busbar. This effectively reduces the number of available conductors. However, this disadvantage is compensated for by the fact that, according to the invention, this allows for a significantly more intuitive and error-free connection of the power supply circuits.

[0042] It would be conceivable to use at least some of the conductor pairs for an alternative power supply. This would be possible – as in Fig. 2. Also indicated – it is conceivable that the lower pair of conductors could not be used for phase selection, but rather to provide conductors for one or two emergency power supply circuits. In this case, too, it is advantageous if the corresponding pair of conductors is arranged in a fixed relationship to each other, since to switch from the general power supply to one of the two emergency power supply circuits, only the contacting element 30 with both contacts needs to be changed in its position.

[0043] If, as in the illustrated embodiment, a total of three conductor pairs are available, the number of selectable phases and emergency power supply circuits can be chosen as desired, provided the total number is again three. By increasing the number of conductor pairs accordingly, the number of available selection options can also be increased.

[0044] The concept according to the invention is also feasible if a busbar with contactable conductors is not arranged as in Fig. 2 shown is not arranged on the side walls 6 of the support rail profile 5, but on the connecting wall 7 connecting the side walls 6. The arrangement of busbars on this connecting wall 7 is also already known from the prior art, wherein the contactable conductors 31 of the busbar 30 are then arranged as in Fig. 5 could be arranged.

[0045] Again, the conductors 31 are arranged in the channels 33 of a conductor support profile 32 made of an insulating material, with the channels 33 now opening towards the underside, i.e., towards the insertion opening of the mounting rail profile 5. The conductors 31 could initially be arranged analogously to those described in Fig. The busbars 10 and 20 shown in Figure 1 are each individually arranged in a plane within corresponding channels of the conductor support profile 32. In the present case, however, each channel 33 is used to accommodate two conductors 31, with a first part of the conductors arranged in a first plane E1 and a second part in a second plane E2. The conductors 31 are arranged on the opposite side walls of a channel 33, so that the Fig. 5 recognizable, wave-like or alternating arrangements result.

[0046] According to the invention, the corresponding configuration of the power supply means provides that the two conductors assigned to a recess or channel 33 form a conductor pair, through which a power supply circuit is formed. For example, the conductor arranged in the first level E1 can be a neutral conductor, while the conductor arranged on the opposite wall of the channel 33 in the second level E2 is a phase conductor.

[0047] A in Fig. The contacting part 33 shown in Figure 5, with correspondingly arranged contacts 61 and 62, is designed such that, upon insertion into the corresponding channel 33, the associated conductors are contacted by the contacts 61 and 62, thus enabling connection to a desired phase of a power supply circuit via the contacting part 33. If, according to the invention, the conductors 31 of several channels 33 are connected to the external power supply via the feed-in means in a corresponding manner, the phase selection can again be easily made by moving the contacting part 63, as indicated by the arrow, without the risk of incorrect contact of individual conductors.

[0048] One to Fig. 5 similar solutions are in Fig. Figure 6 shows that the conductors 31 are arranged alternately on the conductor support profile 32 of the busbar 30 in two different planes E1 and E2. In this case, each conductor 31 is arranged in its own channel 33, with the depth of the corresponding channel 33 changing alternately.

[0049] With the aid of a contacting part 63, which is very similar to the one in Fig. The contacting part 63 shown in section 5 allows a pair of conductors arranged in a fixed relation to each other to be contacted in order to select a phase. Of course, it would also be conceivable to use the contacting part shown in the Fig. 5 and Fig. The 6 illustrated variants of the conductor rail 30 are to be arranged on a side wall 6 of the support rail profile 5.

[0050] Finally, it should be noted that, in principle, it would also be conceivable to reuse the conductors of the busbars in the conventional manner. In particular, it would be conceivable that the end user could choose between the in Fig. 2 shown in the invention as the arrangement of the conductors and the Fig. to change the conventional conductor configuration shown in Figure 9. This can be achieved either by using differently configured feed-in devices or by designing the feed-in devices in such a way that, within a first configuration mode, the configuration shown in Figure 9 is used. Fig. 2 shown in the invention, in a second configuration mode the conventional configuration according to Fig.9. The consumer can therefore choose whether to simplify the connection of corresponding luminaires or electrical units to the mounting rail system at the expense of the number of available conductors, or to maximize flexibility in the use of the conductors, although this then requires increased attention when positioning the contacts responsible for connecting the conductors. QUOTES INCLUDED IN THE DESCRIPTION

[0000] This list of documents cited by the applicant was automatically generated and is included solely for the reader's convenience. The list is not part of the German patent or utility model application. The DPMA accepts no liability for any errors or omissions. Cited patent literature

[0000] WO 2001 / 091250 A1

[0002]

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