DIN rail

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A DIN-rail mounted telephone modem.
A DIN-rail mounted telephone modem.

A DIN rail or top-hat rail is a standardized 35 mm wide metal rail with hat-shaped cross section. It is widely used, especially in Europe, for mounting circuit breakers and industrial control equipment inside equipment racks.

In addition to the popular 35 mm top-hat rail (EN 50022, BS 5584), several less widely used types of mounting rails have been standardized:

  • 15 mm wide top-hat rail (EN 50045, BS 6273);
  • 75 mm wide top-hat rail (EN 50023, BS 5585);
  • G-type rail (EN 50035, BS 5825).

[edit] References

  • European Standard EN 50022: Specification for low voltage switchgear and controlgear 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)
  • International Standard IEC 60715: Dimensions of low-voltage switchgear and controlgear. Standardized mounting on rails for mechanical support of electrical devices in switchgear and controlgear installations.
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