A DIN rail is a metal rail of a standard type widely used for mounting circuit breakers and industrial control equipment inside equipment racks. These products are typically made from cold rolled carbon steel sheet with a zinc-plated or chromated bright surface finish. Although metallic, they are meant only for mechanical support and are not used as a busbar to conduct electric current, though they may provide a chassis grounding connection.
A front view of a populated 35 mm DIN rail
Rear view. Note the release loops at the top of the mounted devices which unclip them.
The term derives from the original specifications published by Deutsches Institut für Normung (DIN) in Germany, which have since been adopted as European (EN) and international (IEC) standards.[1] The original concept was developed and implemented in Germany in 1928, and was elaborated into the present standards in the 1950s.[2]
Some manufacturers catalogues also use the terms: Top hat section / TH / TH35 (for 35mm wide) / Type O / Type Omega (Ω).[citation needed]
The rail is known as the TS35 rail in the USA.
Module width
The width of devices that are mounted on a 35 mm "top hat" DIN rail generally use "modules" as a width unit, one module being 18 mm wide. For example, a small device (e.g. a circuit breaker) may have a width of 1 module (18 mm wide), while a larger device may have a width of 4 modules (4 × 18 mm = 72 mm). Equipment enclosures also follow these module widths, so an enclosure with a DIN rail may have space for 20 modules, for example. Not all devices follow these module widths.[citation needed]
Module widths are usually abbreviated as "M" (e.g. 4M = 4 modules)[citation needed]. Some manufacturers (including Mean Well) use "SU" (likely stands for "standard unit", e.g. 4SU = 4 modules)[citation needed].
C section
These rails are symmetrical within the tolerances given. There are four popular C section rails, C20, C30, C40 and C50. The number suffix corresponds to the overall vertical height of the rail.
G section
Cross section view of a G-type DIN rail, with electrical equipment mounted on it
G-type rail (according to EN 50035, BS 5825, DIN 46277-1).
G rail is generally used to hold heavier, higher-power components. It is mounted with the deeper side at the bottom, and equipment is hooked over the lip, then rotated until it clips into the shallower side.
Others
In addition to the popular 35 mm × 7.5 mm top-hat rail (EN 50022, BS 5584, DIN 46277-3), several less widely used types of mounting rails have also been standardized:
Miniature top-hat rail, 15 mm × 5.5 mm (EN 50045, BS 6273, DIN 46277-2);
75 mm wide top-hat rail (EN 50023, BS 5585);
Related equipment
European Standard EN 50022: Specification for low voltage switchgear and control-gear for industrial use. Mounting rails. Top hat rails 35 mm wide for snap-on mounting of equipment. (formerly: German Standard DIN 46277, British Standard BS 5584)
IECInternational Standard 60715: Dimensions of low-voltage switchgear and control-gear. Standardized mounting on rails for mechanical support of electrical devices in switchgear and control-gear installations.
Australian Standard AS 2756.1997: Low-voltage switchgear and controlgear - Mounting rails for mechanical support of electrical equipment.
^Simpson, Robert (2003). Lighting Control: Technology and Applications. Oxford UK: Focal Press/Elsevier. ISBN0-240-51566-8.
^Arnold Offner; Phoenix Contact (November 12, 2008). "DIN-Rail in the Electrical Control Cabinet and Junction Box" (PDF). IEEE Power and Engineering Society. Retrieved May 31, 2018.
^Tickoo, Sham (2010). AutoCAD Electrical 2010 for Engineers. India: Dorling Kindersley. pp. 8–46. ISBN978-81-317-3213-7.
External links
Media related to DIN rail at Wikimedia Commons
August 20, 2023
rail, metal, rail, standard, type, widely, used, mounting, circuit, breakers, industrial, control, equipment, inside, equipment, racks, these, products, typically, made, from, cold, rolled, carbon, steel, sheet, with, zinc, plated, chromated, bright, surface, . A DIN rail is a metal rail of a standard type widely used for mounting circuit breakers and industrial control equipment inside equipment racks These products are typically made from cold rolled carbon steel sheet with a zinc plated or chromated bright surface finish Although metallic they are meant only for mechanical support and are not used as a busbar to conduct electric current though they may provide a chassis grounding connection A front view of a populated 35 mm DIN railRear view Note the release loops at the top of the mounted devices which unclip them The term derives from the original specifications published by Deutsches Institut fur Normung DIN in Germany which have since been adopted as European EN and international IEC standards 1 The original concept was developed and implemented in Germany in 1928 and was elaborated into the present standards in the 1950s 2 Contents 1 Types 1 1 Top hat rail IEC EN 60715 1 1 1 Module width 1 2 C section 1 3 G section 2 Others 3 Related equipment 4 See also 5 References 6 External linksTypes EditThere are three major types of DIN rail 3 Top hat section TH type O or type W with hat shaped cross section C section G sectionTop hat rail IEC EN 60715 Edit This 35 mm wide rail is widely used to mount circuit breakers relays programmable logic controllers motor controllers and other electrical equipment The EN 60715 standard specifies both a 7 5 mm shown above and a 15 mm deep version which are officially designated top hat rail IEC EN 60715 35 7 5 top hat rail IEC EN 60715 35 15Some manufacturers catalogues also use the terms Top hat section TH TH35 for 35mm wide Type O Type Omega W citation needed The rail is known as the TS35 rail in the USA Module width Edit The width of devices that are mounted on a 35 mm top hat DIN rail generally use modules as a width unit one module being 18 mm wide For example a small device e g a circuit breaker may have a width of 1 module 18 mm wide while a larger device may have a width of 4 modules 4 18 mm 72 mm Equipment enclosures also follow these module widths so an enclosure with a DIN rail may have space for 20 modules for example Not all devices follow these module widths citation needed Module widths are usually abbreviated as M e g 4M 4 modules citation needed Some manufacturers including Mean Well use SU likely stands for standard unit e g 4SU 4 modules citation needed C section Edit These rails are symmetrical within the tolerances given There are four popular C section rails C20 C30 C40 and C50 The number suffix corresponds to the overall vertical height of the rail G section Edit Cross section view of a G type DIN rail with electrical equipment mounted on itG type rail according to EN 50035 BS 5825 DIN 46277 1 dd G rail is generally used to hold heavier higher power components It is mounted with the deeper side at the bottom and equipment is hooked over the lip then rotated until it clips into the shallower side Others EditIn addition to the popular 35 mm 7 5 mm top hat rail EN 50022 BS 5584 DIN 46277 3 several less widely used types of mounting rails have also been standardized Miniature top hat rail 15 mm 5 5 mm EN 50045 BS 6273 DIN 46277 2 75 mm wide top hat rail EN 50023 BS 5585 Related equipment EditEuropean Standard EN 50022 Specification for low voltage switchgear and control gear for industrial use Mounting rails Top hat rails 35 mm wide for snap on mounting of equipment formerly German Standard DIN 46277 British Standard BS 5584 IEC International Standard 60715 Dimensions of low voltage switchgear and control gear Standardized mounting on rails for mechanical support of electrical devices in switchgear and control gear installations Australian Standard AS 2756 1997 Low voltage switchgear and controlgear Mounting rails for mechanical support of electrical equipment See also EditPrinted circuit boardReferences Edit Simpson Robert 2003 Lighting Control Technology and Applications Oxford UK Focal Press Elsevier ISBN 0 240 51566 8 Arnold Offner Phoenix Contact November 12 2008 DIN Rail in the Electrical Control Cabinet and Junction Box PDF IEEE Power and Engineering Society Retrieved May 31 2018 Tickoo Sham 2010 AutoCAD Electrical 2010 for Engineers India Dorling Kindersley pp 8 46 ISBN 978 81 317 3213 7 External links Edit Media related to DIN rail at Wikimedia Commons Retrieved from https en wikipedia org w index php title DIN rail amp oldid 1159167907, wikipedia, wiki, book, books, library,
