DIN- rake - the generic name of the metal profile used in electrical engineering . Depending on the requirements (weight, strength, and current through the grounding terminals), either galvanized steel or aluminum is produced. It happens solid or with a regular perforation step, there are also options with preliminary notching to facilitate cutting to a certain length.
Available in several varieties, referred to by the similarity of the type of profile with the letter of the English alphabet.
Used for mounting various modular equipment ( circuit breakers , RCDs , etc.) in electrical panels , cabinets or installation boxes. The use of rails, coupled with the minimization of elements used in electrical products, led to the emergence of a fundamentally new approach to the manufacture of equipment - in very compact cases of typical size very complex devices and devices are placed, sometimes with built-in microcontrollers .
Content
Types
Ω-type (omega-type)
TN35 - metal rail 35 mm wide special profile. The standard for this rail was developed by the German Institute for Standardization and subsequently adopted by the International Electrotechnical Commission , as well as the European Standard (EN).
In Russia, the TN35 rail was introduced by the national standard GOST R IEC 60715-2003 “Low Voltage Distribution and Control Equipment. Installation and fastening on rails of electrical devices in low-voltage complete distribution devices and control " [1] .
There is also a rake of reduced size, both in thickness and in profile width - such rails are usually used for installation of small terminals , rather than devices.
The material of the rail can be steel, copper, aluminum. The surface can be treated ( anodizing , galvanizing , galvanizing and other methods).
It can be either solid or perforated .
C-type
In rails of this type, the ends are bent inward. Therefore, the profile of such a rail resembles the Latin letter C. Rail type C is usually used to install hardware clamps, terminal blocks, etc. The width of the rail is 32 mm, height 15 mm.
G-type
In rails of this type, the ends are bent inwards as well as in C-type rails, but one end is smaller and lower than the other, therefore the profile of such a rail resembles the Latin letter G. G-type rails are used to install hardware clamps, terminal blocks, etc. . The width of the slats is 32 mm; height of the long end is 15 mm; short 9 mm.
Features of the application described in the standards
- According to DIN 43880, for a mounting rail, the width of one installation module is 17.5 mm. The center-to-center distance of two adjacent single thickness modules is set to 18 mm.
- The distance between the rows of rails (vertical) - 125 mm.
- The distance from the frontal plane of the mounting rail to the frontal plane of the front surface of the module mounted on the rail should not exceed 44 mm, and the distance to the plane of the module’s protective material should not be less than 47 mm.
Gallery
DIN rail terminals
Examples of equipment mounting on a DIN rail in an electric switchboard of a three-phase power supply system , from left to right: terminal blocks (5 white for phase wires, 1 blue for a neutral wire , 1 yellow-green for a protective ground wire ), a three-phase modular batch automatic phase switch for current limiting , three-phase differential current device ( RCD ) with a tripping current of 30 mA, a relay and a contactor for phase control and voltage protection ]]