What is a loop through switch? This is a device that has three pins. When a key is pressed, it switches one of the contacts in the connection diagrams of passage switches from 3 places to two lamps of the first number between two other contacts. This takes into account their location. Pressed the key up, and the first contact closed with the contact under the second number. When you press down the first number, it interacts with the third.
Consider a circuit for connecting a passage switch with 3 places. It uses a cross switch or switch. Its name speaks for itself. Cross-to-cross connections are made here. A photo of the connection circuit breaker with 3 places can be found without much difficulty.
Contacts must interact directly. When a key is pressed, they will be switched in a cross direction. The circuit breaker connection diagram with 3 places is easy to use. See below for more information.
System Description
The operation of the circuits for connecting a passage switch from 3 places is as follows. The blue wire with a zero value, which is located in the electrical panel, is connected to that part of the cap where the thread is located in the electric lamp.
The grounding cable, which has a yellow and green tint and is also located in the electrical panel, is connected to the lamp housing.
The red wire with the phase value must be connected to the central base contact of the lamp through three switches. We follow the instructions for connecting a passage switch with 3 places of 2 lamps.
These components of the clarification system control the process of connecting the phase wire to the luminaire. We connect the elements - it turns on, turn it off - it goes out. You can successfully create a do-it-yourself connection diagram for a circuit breaker with 3 places. To do this, carefully study the image and follow the schematic instructions. Exactly observe the connection of wires by color.
Usage example
In the premises of a long curved corridor, such a system of switches can be installed:
- At the entrance from the street.
- In front of the kitchen.
- Near the room.
When leaving the room after pressing the number 2 key, the light lights up in the corridor. On the way to the exit, turn off the lamps using key number 1. When another person leaves the kitchen and wants to turn on the light in the corridor by pressing the cross switch, after going through the entire length of the room, he will be able to turn off the light again with the number 2 key.
System features
It is noteworthy that this circuit does not have a fixed position of the “on” or “off” switches. This is the main feature of such a switch.
It all depends on how the keys are located relative to each other. This model is not always convenient, you need to get used to it.
The second feature of the circuit is the property that the load current flows through it. This requires that the wire cross-section corresponds to the power level of the lamp that is connected.
Practical application of the scheme
First of all, we will determine the functions of the wires from the electrical panel, depending on their color:
- Blue is zero.
- Yellow - green - "grounding".
- Red is “phase”.
Route all three wires into the branch box. Attach the two-wire wires of the lamp and the three-wire socket to them. This is the installation location of the first pass-through switch. If there is no cable with two cores, you can use with three. Then one of them will not be involved.
In the box, connect the blue wire to the same wire in the lamp. We do the same with the wires “ground” and “phase”.
In the socket No. 1, get a three-core cable from No. 2. This is a direct connection to each other without the use of a junction box.
In the same socket, connect the "phase" wire to the first terminal in the passage switch. "Earth" and "zero" are fixed respectively on the terminals of the second pass-through switch.
Similarly, the connection occurs in the third undergrowth.
In the diagram, the color of the wires exactly corresponds to this description and the notation on the switches.
To the red wire connected contact No. 1 of the second pass-through switch. The phase will be supplied directly to the central base contacts of the luminaire. So, in the second socket, such a wire must be connected to the red wire of the first socket, insulated and left here.
At the first point, connect the red cable from the second point to the “zero” located in the junction box. Insulate too and leave in place.
In the junction box, connect the “zero” from the first socket to the “phase” that goes to the lamp. This is the passage from the first contact to the third point in the passage switch to the central contact of the lamp base.
The possibilities of using such schemes
Schemes can be created for 4, 5 or more places, as well as two-gang walk-through switches, which makes it possible to control two lamps at once, from several places. If desired, a centralized way to control lighting functions can be planned. This will allow you to turn off the lamps in all rooms when leaving the house at once by pressing a single key.
Creating a complex system of many fixtures with the ability to turn them off from different rooms is a real use of the knowledge gained in this article.
With the correct application of the connecting circuit breaker connection circuit with 3 seats "Legrant", you can build the one that you need.
Overview of sockets "Legrant", "Lezart" and "Schneider"
Not only ease of use, but also the safety of housing depends on the quality of the outlets.
Legrant
One of the most common varieties of this device is the "Legrant Valena". It is popular for its high level of quality and ease of installation. The outlet has a fairly rigid mechanism, which ensures ease of installation. It is made of high quality plastic and equipped with screw clamps. It is very comfortable. Switches of this brand with self-locking contacts differ in some rigidity. They look attractive on the walls.
Docking is not convenient enough; traction is not provided for.
Schneider
"Schneider Electric Unica" can be with double or single frames. These are high-quality mechanisms that are in no way inferior to the first model. Products are completely collapsible. The buttons are more gently pressed. Plastic is slightly inferior in quality to Legrand.
Schneider sockets and switches are equipped with elements for coupling with each other. This allows better alignment of several outlets or switches nearby.
The backlight of the switches is not very reliable. User reviews indicate that it often burns out.
Schneider Electric Glossa is a budget option for such products with a decent quality mechanism. If you need to replace all sockets and switches in the apartment, you can entrust the mission of this model.
Lezart
Lezart is another brand of sockets and switches worthy of attention. Products from a manufacturer from Turkey.
It is equipped with a plastic overlay of the contact group, an elderly input with spring-loaded mounting pads, heat-resistant plastic.
There is no spring-loaded clamp of the contact group, which is visible after removing the upper part of the plastic.
It turns on quite easily. The connection diagram of the through switch with 3 places "Lezart" will be a good choice for organizing lighting in the house.
What are the options for using the three-switch system?
The use of straight-through switches is necessary when performing repair work and in the process of replacing electrical wiring. Their use allows you to manage the lighting process without having to return to another room. In combination with varieties of cross-type devices, it becomes possible to control the lighting system from neighboring rooms.
The connection diagram of a passage switch with 3 seats Legrand is successfully used in private homes. The function of the through-type product is to control the phase connection to the central contact of the cartridge.
The use of such a scheme is especially successful in a long curved corridor. Instead of one lamp, you can install several, place them on the ceiling, and place the switches where it is convenient for the owners.
Come into the room and turn on the light. Take off your shoes, go into the room and turn off the lamps. The Schneider circuit breaker connection scheme with 3 places will help to realize the described features.
Thus, you can turn on and off the light from several places, which is sometimes just necessary.
To summarize
Knowledge of the application features of the circuit of their 3 switches provides opportunities for assessing the correct connection in the early stages of installation. When organizing such complex systems, it is important not to make mistakes so that you do not have to remove the wallpaper again and violate the integrity of the walls.
Walk-through switches are successfully used in rooms for various purposes. It will be successful to use them at home.
Correct operation of such a mechanism is possible only in pairs. If the installation is done correctly, the system will function easily and conveniently.
Knowing the secrets of the passage switch device, when the network can only be in two states (closed and open), you can successfully complete the installation of the lighting system with your own hands.