Mounting DIN rails in the shield. What is a DIN rail. Metal rail: profile types and installation

Household switching equipment, which has another name - modular, today is a fairly common phenomenon. The reason for this is all circuit breakers, and RCDs, circuit breakers, which are assembled from the same width of modules. Their dimensions are approximately the same, which allows you to use the same fixtures for fastening.

DIN rail: what is it

An important quality of the modular series equipment can be called the fact that its fastening is unified today. If you look back to the past, you can remember how the old circuit breakers were attached to the surface. Masters had to drill various holes, and even sometimes cut threads into them. To fix the devices, a variety of fasteners were used: screws, washers, nuts, bolts and much more. However, this is not only inconvenient. The safety of these mounts has always been in doubt.

Everyone knows that electrical panel, where part of the device is energized, there is always a certain amount of risk when replacing parts. A screw that has fallen inside can close the phase to the case in a matter of seconds. A short circuit is also possible.

No screws, nuts or washers are required to fasten modern electrical equipment of the modular series. The devices are installed on a standard factory metal bar called a DIN rail.

What devices can be mounted on a DIN rail:

• Electric meters:
• Protective devices;
• Relay;
• Terminals;
• Automation devices;
• Zero tires;
• Signaling and control devices.

Some elements electrical circuits designed so that the double mounts allow you to install them on a DIN rail, and on any other surface.

Width of the machine module: fixing rail in the cabinet

In shields that are used for mounting any modular equipment, fixation often occurs due to the design of external holes in the cover for the actually installed amount of switching equipment. To do this, the holes under the outer part of the equipment do not open completely, and part of them is closed by easily removable shutters.

Types of DIN rails:

• The most common DIN rail has the design TN-35-7.5. It is 35mm wide and 7.5mm high.
• Not uncommon is a modification with a rail height of 15 mm (TN-35-15), which is used in hinged and floor shields. Such rails are called Ω-type models, because they are very similar in profile to such a letter.
• In addition, there is also a type of rail type "C" and "G". At the edges, they are curved inward, not outward. They are used when installing equipment that requires such parameters.

In the process of installing the device, the main thing is to choose the right type of DIN rail that suits your particular case.

What is a DIN rail in an electrician, according to GOST: features of fastening a meter and other devices

One of the main advantages of modern distribution and complete devices can be considered their compactness. And the appearance on the market of the DIN-rail made it possible to completely change the internal filling of the switchboard, equipped with electrical installation equipment. More recently, only one meter with two plugs was included in the home electrical panel, but today such a design is considered primitive and life-threatening.

A modern electrical panel, which occupies a wall area equal to about square meter, has in its presence from ten automatic switches, zero, protective and working tires and other elements. With all this, the interior is not disturbed in the apartment, and the residents do not experience any discomfort from the presence of such equipment in the house.

This compactness was ensured by the appearance on the market and the widespread introduction of modular, unified technology. That is, all the elements: relays, counters, starters, RCDs, resemble the parts that make up the children's designer, which is easily assembled into different elements.

DIN rail features:

• It is made in the form of a perforated complex metal profile;
• On sale you can find aluminum or steel galvanized DIN rails, which differ in weight, current strength and strength;
• DIN-rails are solid and perforated.
• Some of them can be notched to facilitate cutting.

Also, the DIN rail on the market differs in the type of profile. Their format resembles the letters of the Latin alphabet, according to which they are marked - C, Ω and G type.

Metal rail: profile types and installation

For fastening various elements of modular equipment, in electrical cabinets, installation boxes, or shields - RCD, there are special sponges in the cross section of the profile. The DIN rail itself strongly resembles a rail, which is why they sometimes call them DIN rails.

A conventional, standard electrical panel with DIN rails is distinguished by its simple design and the convenience of the installation process of unified modular devices. This was achieved due to the fact that it is much more convenient to mount the circuit breaker in the shield. It is enough to simply snap it into place in one motion, and not fasten, as before, with screws.

All modern automation is adapted to DIN rails. As a result, they are fairly easy to install. You just need to squeeze the sponge on the machine with a flat screwdriver, and then with a slight movement the machine snaps into place. The entire installation process takes less than a minute.

DIN rail profile types:

• Due to the fact that the DIN rail is an integral part of the switchboard, manufacturers provide various options its attachments. For this purpose, its profile is perforated with holes that allow it to be fixed in necessary place self-tapping screws or bolted connections.
• In order to adjust the format of the DIN rail, you can use a grinder, but sometimes a hacksaw is also used for this.
• In order to replace the machine located on the din rail, you just need to loosen the fastening screws on the terminals. After that, the device lock must be moved down and the machine removed from the rail.

Depending on the profile used, there are several types of DIN rail . Their dimensions depend on the equipment that you plan to mount on it. Experts consider the din-rail Ω - type (Omega) to be the most common.

Where is the DIN rail used (video)

The modern metal, most commonly used in practice, standard DIN rail TN35 is a special profile with a width of 35 mm. It was developed by specialists of the German Institute for Standardization. Further, she was taken European standard devices for connecting modular equipment. The designation DIN is translated into Russian according to the name, and sounds like Deutsches Institut fur Normund (German Institute for Standardization). In our country, the production of DIN rails began in 2004. ETM can be considered the pioneers. However, their prices were very high. In addition, the company had to adjust the distance between the holes for some time.

Very often, when carrying out electrical work, there is a need for high-quality fixing of any electrical appliances. As a fastening material, DIN rails are widely used. However, many do not know what it is and what a DIN rail is for.

What is a DIN rail

In electrical engineering, a DIN rail, in everyday life, is called a special metallic profile different configuration, which is used when executing . Din rails meet a wide variety of requirements, so they can be made from either galvanized steel or aluminium. Din rails are solid, or with special perforation, that is, a pre-applied notch that facilitates their separation to a certain length. Standard din rails are available in lengths of two meters and a width of 35 millimeters.

They are widely used in order to securely fasten a variety of modular equipment, including circuit breakers, various protective devices and much more. DIN rail is designed for use in electrical. This has led to the fact that all modern equipment has typical dimensions and compact cases, in which there are DIN rail mounts.

Practical use of DIN rails

Currently, the use of DIN rails is provided in most of the designs of electrical panels. All electricity meters and other modular switching equipment are also available with ready-made mounts, with the possibility of placement on the rail. Fasteners are special clips made of metal or plastic that secure and fix equipment mounted on a DIN rail. The cost of DIN rails, depending on their parameters and material, differs several times.

The main advantage of electrical panels that use Din-rail is the simple and convenient installation of modular equipment of various modifications in them. Maintenance of such shields is also easy. For example, to replace, just unwind the terminals, remove the wires and remove it from the rail.

In order to install some new one in the electrical panel electrical appliance all steps must be performed in reverse order. It is enough just to snap the device into the rail, insert the wires into place and tighten the terminals.

Quick installation of electrical equipment - only on DIN rails!

The 220pro online store presents a range of DIN-rails of the TN-35 type.

We offer perforated rails:

• 75 mm;
• 300 mm;
• 500 mm;
• 1000 mm;
• 2000 mm.

These are mounting rails made of Omega profile steel with a width of 35 mm. Initially, the model was developed in Germany and received the name DIN-rail (DIN - Deutsches Institut fur Normund - German Institute for Standardization). Since 2004 according to GOST R IEC 60715-2003 is the standard mounting profile in Russia.

Usage

Mounting mounting rails are designed for installation of modular electrical equipment.

Used for fasteners:

• automatic switches;
• differential automata;
• electric meters,
• relays, contactors and starters;
• cross-modules and terminals;
• electrical outlets;
• switching equipment.

With the help of products of this type, equipment is installed in electrical panels, cabinets and installation boxes. The use of DIN rails, the compact dimensions of electrical equipment and products allow them to be placed in standard cases more equipment. This saves installation space and the ease of installation saves time.

Classification

Dinrails differ in:

• material of manufacture (steel, aluminum);
• length (from 75 to 2000 mm);
• the presence of perforation (solid, perforated);
• profile thickness (from 0.8 to 1.5 mm);
• profile shape (omega, G-slats, S-slats).

Presented assortment

In the 220pro store you can buy galvanized steel DIN rails made in Russia and Italy. Profile width 35 mm, height 7.5 mm, Omega type.

Depending on the thickness and length of the product are divided into several groups according to the load.

For small loads

Galvanized steel - 0.8 mm thick, aluminum - 1 mm, length 75-100 mm. Purpose - for fastening individual elements (machines, RCDs, power supplies).

For medium loads

Steel - 0.8 mm, aluminum - 1.1 mm, length 300-1000 mm. It is used for mounting automata, RCDs, power supplies, cross-modules, relays and switching modular equipment.

For increased loads

Steel - 0.8 mm, aluminum - 1.4 mm, length 500-1000 mm. For fastening any type of products: automata, differential automata, RCDs, frequency converters, contactors and starters, power supplies, cross-modules, relays, power machines.

For maximum loads

Steel - 1.0 mm, aluminum - 1.5 mm, length 1000-2000 mm. It is used to install heavy equipment: frequency converters, contactors, equipment soft start, power machines. The best option for professional installation, with minimal cuts.

Different types and additional accessories

Except standard width in 35mm, smaller rails are produced by 15 mm with a height of 5 mm. They are used to install terminals and other light electrical products.

As optional accessory dinrail holder (bracket) is used. Installing the holder allows you to "land" the rail at an angle, turning the bottom side "face" to the master leading the work. When fixing terminal blocks or cross-modules on such an inclined DIN rail, the electrician gets convenient access to the contact groups. This facilitates the connection of cables, especially when distributing one power supply to a group of consumers.

Benefits of using DIN rails:

• standard sizes (suitable for any type of equipment and electrical products);
• safe installation of open wiring;
• suitable for electrical panels, boxes;
• high speed mounting of individual modules on the rail (3-5 seconds);
• quick installation and dismantling of equipment;
• perforation for easy screw fastening;
• notches along the length of the rail for cutting to size;
• mounting a large number equipment in a small area, without loss of connection quality;
• affordable prices;
• compliance with the requirements of GOST and IEC.

The 220pro online store is the best products and favorable prices for electrical products. Selection of equipment, consultations on the entire range, affordable prices and a system of discounts.

DIN rails are made from galvanized steel or aluminium. Some models are perforated along their entire length for easy distribution into components of the required size.

By profile type

According to the shape of the profile, the rails are divided into the following types:

1. Omega-shaped profile, which is the most popular. Products are used for the installation of switchboards: installation of automatic protective devices, meters and other necessary devices. Sponges of laths are bent in outside. The width of the device is either 15 or 35 cm. According to the height of the jaws, three typical sizes- 5, 7.5 and 15 mm.

1. The C-rail assumes the presence of concave edges 15 mm high. Such a product is used for mounting hardware clips and terminal blocks.

1. The G-shaped profile is used less often than other rails. It is used for mounting some models of devices imported from abroad. It is quite difficult to find a rail of this type in our country.

The ends of the G type rails are concave inward, one of them is shorter than the other - the height is 9 and 15 mm. Rail width - 32 mm.

By perforation

According to its intended purpose, the Din-rail serves as a mounting rail, which is a profiled strip of steel. The horizontal platform in most types of rails is perforated with oval holes necessary for attaching the product at the point of its installation. The holes are located at a distance of 10-20 mm from each other.

Rails are also produced without perforation, for the installation of which preliminary basting and drilling of holes for fasteners are required at distances in accordance with the required dimensions.

According to the manufacturing method

According to the method of production, products are divided into:

• stamped;
• cast.

Cast rails are highly reliable and able to withstand significant loads without losing their shape and properties from their impact.

According to the material of manufacture

Depending on the material used in the manufacture of DIN rails are divided into:

• steel, reinforced with a protective galvanized coating;
• lightweight aluminum.

For other parameters

DIN rails are also available with reduced profile thickness and width. In other models, there are special serifs, with the help of which the product is divided into pieces of the required length.

Application Benefits

The main advantage of using DIN rails is the ease and convenience of installation in switchboards of modular devices. for various purposes regardless of their construction type.

Performing preventive maintenance in switchboards with installed DIN rails is simple and easy. To replace an RCD or other device, you simply need to disconnect the wiring connections and dismantle the device by releasing the latch. Installation of a new device is carried out in the reverse order. Read also article ⇒

Tip #1: Using Ding rails can significantly save the internal volume of switchboards.

Application

Today, rails are used for almost all appliances and switchboard models. A variety of devices and electrical equipment are made pre-adapted for mounting on rails. Such fasteners are made in the form of plastic or metal clips.

The price of rails varies depending on the manufacturer, dimensions, material and markups of stores selling these devices.

What is attached to the din rail?

No third-party fasteners are required to secure modular electrical appliances. All devices are mounted on a standard DIN rail.

The protrusions located on the edges of the rails serve to hold the devices installed on it, which can move relatively freely along it. To prevent such movements, special locking plugs are installed along the edges of the rails.

However, in switchboards, when installing modular devices, they are fixed using existing or additionally made external holes in the cover in accordance with the established number of switching equipment. For this purpose, the windows for the elements of the devices located outside are not fully opened, some of them are covered by retractable curtains.

Tip number 2: With less than it is possible to install, the amount of equipment, the remaining free part of the window is covered with plugs.

All modular type machines, RCDs or circuit breakers have latches. Their installation is carried out by hooking the groove of the device at one edge, while the lower part is clamped on the rail with a little effort until it clicks. To remove the part, you will need to use a flat screwdriver to pull the latch down and remove it from the groove. Some devices are fixed in the open position of the latch.

In addition to protective devices, other devices are attached to the DIN rail:

• relay;
• electricity meters;
• automation devices;
• terminals;
• control and signal devices;
• zero tires.

Many circuit elements have double fasteners that allow them to be mounted both on a rail and on ordinary surfaces.

Machine installation

As an example, consider mounting a circuit breaker to a mounting rail in an electrical panel.

The rail is fixed in the shield body with screws. Switchboards can be delivered unassembled, and are often equipped with an already installed bar.

Next, you should install the auto switch on the rail, for which one edge of the device is attached to the top of the bar and press until a slight click on the body of the machine. In principle, this completes the installation of the device.

Each modular device on a mounting rail can move freely in all directions horizontally. This allows you to change the location of the machine, if necessary, simply by moving it.

The wires to the machine located inside the shield are connected through the supply cable and the wire coming from the consumer of electricity.

The power wire is connected first, for which it is necessary:

• unscrew the fixing latch located on top;
• connect the power wire to the terminal;
• tighten fastener.

To connect the consumer, the same steps are performed.

Installation on old boards

Installation of rails in old-style switchboards is often carried out on surfaces that are not suitable for such work. There is nothing to be surprised here - Soviet-made shields were made at a time when DIN rails did not yet exist.

The need for installation in an old electrical panel is due to the installation of new equipment in it - replacement or installation of additional auto switches or other devices:

• difavtomatov;
• phase control relay;
• voltage increase limiters;
• modular devices;
• small electric meters;
• bags and other devices.

Unlike modern-style electrical panels or boxes, in which the DIN-rail is placed in already prepared places and fixed with self-tapping screws or bolts, you will have to tinker a little with old shields.

Installing the rail in the old shield is performed in the following sequence:

• in the platform of the shield, made of metal, two holes are arranged;
• threads are cut in the holes;
• the rail is fixed with two bolts;

As a rule, there are enough holes in the platforms of old shields, so you can do without drilling.

Errors in the selection and installation

When choosing a rail for material and dimensions, the type and weight of the devices to be installed on it are often not taken into account.

The main mistake when installing a DIN rail can be called neglecting the installation of plugs. Due to vibrations, equipment on DIN rails can gradually move. If there are no plugs in the kit, you can fix the device with pliers - just straighten the lips of the rail.

Also, during installation, the width of the device being fixed is often not taken into account, which leads to a shortage free space to secure other devices.

Modern complete and distribution equipment is characterized by significant compactness. Shield with ten circuit breakers with consumption meter electrical energy, zero protective and working tires occupies a plot of no more than one square meter on the wall, without spoiling the aesthetic component of the interior at all.

High compactness is ensured by the use of modular, that is, unified technology. Small machines, devices protective shutdown, relays, counters and starters, like parts of a children's designer, are easily assembled in random order.

Speaking of children's constructor, meaning that unified technology is not only compact, but also easy to install. The assembly of a switchboard with modular elements does not require special equipment - it is enough to have several types of screwdrivers in your arsenal. The main time spent during installation is associated with the marking and connection of wires, and not with the installation of modules.

Ease of installation was made possible thanks to the ingenious and simple invention of German engineers - DIN rails.

DIN rail mounting

DIN rail is a complex metal perforated profile. On the cross section, they have special sponges, which, in fact, hold the modular elements. Thanks to this design, the installation of equipment occurs in a simple manner:

1. The DIN rail is fixed with two screws or self-tapping screws in the recess of the switchboard.

2. Movable clamps on the case of modular devices - switches, meters, RCDs, etc. are moved and installed on the rail.

3. Fixed clamps are placed on top of the jaws.

4. Movable clamps capture the lower lip with a return spring.

5. The installed device is moved to the right place and you can install the next one.

During operation, the devices can move due to vibration, so special plugs must be installed on both sides. You can also fix the modular elements with pliers - by straightening the lips of the rail.

The use of modular technology greatly simplifies the work with electrical equipment. The German Institute for Standardization has developed a series various profiles to work with DIN rail.

The most common profile used in the assembly of switchboards is called Omega. Its width is 35 centimeters, and the height of the sponges is seven centimeters. Omega is used in modern apartment introductory, distribution and accounting boards.