Feedthrough switch - connection diagram. Connection of Legrand pass-through switches

Getting into a room that does not have a high level of illumination, we immediately turn on the light. To implement this manipulation, there is a special device - a switch. It would seem that it could be easier? But with a careful study of this issue it turns out that it too has its secrets.

This article provides detailed information about switches of various types, their scope is indicated. Also you have an opportunity to see the scheme of their connection. Having thoroughly studied all the material below, you can easily install a switch of any type at home, the main thing - observe all the precautions.

What are the switches

Switches (switches) are different: depending on the functionality, design, installation method, etc. This device must be made of high-impact material (usually plastic) of high quality, having a smooth surface. Install switches in places that will be easily accessible. This device operates in a hidden, as well as open wiring.

As for the design of the switches, it differs in variety. There are devices of the classical type. There are models that give the interior of a certain room originality, a highlight. The color spectrum of the switches can satisfy the most exacting customer, so there should not be any problems with the combination of furniture, wallpapers and other interior items and a switch. Some companies also manufacture switches with decorative replaceable panels. After the device has been mounted, it is possible to install various covers on it.

Switches can be ordinary and through; Single, double and triple. In this article, we will talk about pass-through switches designed to be able to include one light group from two or more places. The following important topic will also be considered: "Feed-through switch - connection diagram of this device".

Feedthrough switch

In conventional switches, the current circuit is interrupted. In contrast, transient models have three contacts with the device, which provides a switching process between them. A double-pass switch Has such contacts six.

The main advantage of the transition switch is that you have the ability to switch the lighting on and off from several places.

Pass-through switches are also called throw-over switches , or doubling switches .

Area of application of pass-through switches

There are four main areas in which pass-through switches are used.

1. Stairs. In this case, they should be on the first and second floor: you can turn on the light on one of these floors, and then go up / down the stairs and turn off the same lighting, but by another passing switch.
2. Sleeping rooms. In this case, one device is placed immediately at the entrance to the room, and the other - near the bed. This is very convenient, because to turn on the light before going to sleep, you no longer have to get out of bed and go through the entire room.
3. Corridors. In this case, the inclusion of a pass-through switch can occur at the beginning of the corridor and at its end.
4. Villas. Transitional switches are used so that you can easily illuminate the yard and paths.

Feedthrough switch: wiring diagram

The functioning scheme of the passage device is reminiscent of the switchover of the railroad arrows, since it can be used for any position of the keys, because they switch from one line to another.

So, the pass-through switch: the connection diagram of this device is explained as follows. Two pass-through switches, one of which receives the phase, and the second moves to the luminaire, must be combined with a special wire or cable. But, as a rule, they are not directly connected, instead of placing three wires in the junction box each, and two of them connecting together.

A circuit-breaker circuit, to which, in addition, if necessary, a certain number of cables can be added, in essence, does not change. The only difference is that the first two cables have only one input contact, and two output cables. And if you increase the number of cables, then, respectively, will have to increase the number of input and output contacts: two for each. This will ensure their use between the two lines in a cross way.

Third pass switch

As for the third pass-through switch, first of all you need to make sure that it has the ability to perform cross-over functions - this should be checked at the time of purchase. The circuit of operation of such a switch can be described as follows: switching occurs, the third switch at the input connects the first contact to the second one located at the output, and vice versa, the second contact at the input - with the first at the output. To connect this pass-through device, you can simply connect it with a two-wire cable with two other pass-through switches. But most often they take a four-wire cable instead, start it in a junction box, and already there they make a switch.

By the same principle, the fourth one can be added to the circuit-breaker connection circuit. Then it will be placed between the first / second and third switch.

Two-channel pass-through switch

So, the pass-through switch, the connection diagram of this device, the principles of its functioning - this issue was considered. Now let us dwell on one of the types of a transient switch - a double one, which can still be called a two-key switch.

Usually, the two-key switches are placed in rooms where separate switching, directed from different locations of the two lighting lines, will be used. In the corridors, as well as in the area of the stairs, a single pass-through device will suffice.

In the double switch on the keys there should be arrows: they perform the function of indicating the direction of the key to turn off or turn on the lighting.

The structure of the two-key passage switch includes two single-key devices. They are combined in a single casing and work by switching contacts.

Two-key through-hole switch: wiring diagram

The device of the two-key pass-through switch means two independent groups of contacts. When you press the keys, they switch from the top lines, which are not interconnected in any way, to the lower ones, which in turn follow the same switch on the second one.

So, we have two groups of contacts: the right one (contacts # 1 and 2) and the left one (contacts # 1 and # 2). Then the circuit of the two-key through-switch can be explained as follows. The phase from the junction box of your house comes to contact No. 2 of the right switch. Further contacts of the same group are united by a jumper, and from the left group - they are moved to two independent lamps. It should be noted that these two contacts should not intersect each other. Now these four cross-contacts must be connected to each other in pairs.

Cross-connect type

So, the two-key pass-through switch - the circuit of such a device is quite understandable. The task becomes a bit more complicated if you decide to implement a cross connection.

To connect the cross-pass switch, you will need to combine it with four wires with each of the end switches. Usually, eight wires with a cross and six from each pass-through switch in one junction box are put into operation. At the same time, one should not forget that it is necessary to place a power cable there - this is necessary in order to connect chandeliers or small lamps.

Carrying out such connection of two-key pass-through switches, you need to closely monitor all your actions in order not to confuse the pairs and not to connect wires from different lines to the same switch. So the scheme will not work. It is advised in the mind to imagine that there are two independent one-key pass-through switches that are connected together in one housing.

Legrand bushing switch

Legrand is a company that occupies one of the leading positions in the world market of production of electrical fittings. Switches are the mandatory components of each series of products of this French company. Legrand is famous for its variety of devices that have different shapes and colors. Also it should be noted that in reliability and quality of switches of the given firm to doubt precisely it is not necessary.

In order to roughly represent what the pass-through model is in general, we give a description of such a device as a single-key pass-through switch Legrand Valena:

1. Current consumption is 16 A.
2. Cross-section of a wire - 2,5 mm ² .
3. Screwless contact clamps.
4. Degree of moisture protection - IP 20.

Precautions for operation with switches

Whatever the switch - single-key or dvuhklavishnym, white or black, the company Legrand or not, but working with it - is manipulation, especially with electricity, and it is known to be very dangerous. Therefore, one should not forget about the elementary rule of safety: it is necessary to switch off the power supply in the room where the installation process will be carried out. And it's better to completely de-energize the whole house - it will be safer.