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Atex Brakes


  • PATENT pending design and concept system
  • Hazardous area brake (fit direct to motor output)
  • Three phase AC (IEC 80 to 160) or single phase DC electromagnets (IEC 63–280 and NEMA 56–405)
  • IP66
  • F class insulation
  • Thermally protected with dual metal protectors as standard
  • Large terminal box with terminal board and fitted in rectifier (for DC only)
  • Very high resistance structure
  • Designed for S1 duty without ventilation

The VIS range of Atex Brake motor units come with a variety of options to include, though not exhaustively:

  • Hand release (up to frame size 250)
  • Ready for hand release kit fitting
  • PTC thermistors
  • Anti condensation heaters
  • Switch on brake opening or on hand release
  • Special flange coupling

Find out more by following www.visbrakes.com/ and have a watch on our Youtube channel using this link.

VIS brakes are in many ways unique and conform to numerous international standards for dangerous environments, these include:

Brake motor units to Atex standards

  • Category: 2G / 2D /2GD
  • Type of protection: Ex d / Ex tD A21
  • Enclosure group: II B / II C
  • Temperature class: T3 / T4 / T5
  • Maximum surface temperature: T200 ˚C / T135 ˚C / T100 ˚C
  • Protection mode: IP66
  • Ambient temperature -50 ˚C +55 ˚C (available as option on frames 63 to 225) or -20 +55 ˚C (standard for frames 63 to 280)
  • Group I M2 for mining

Get in touch today to see what STM UK can do for you!


For further information including Catalogues, Installation Manuals, Parts Lists or 2D/3D drawings please follow the links below:

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Brake motor units to IEC Ex standards

  • Category: Gb / Db / Mb
  • Type of protection: Ex d / Ex tb
  • Enclosure group: I / II B / II C
  • Temperature class: T3 / T4 / T5
  • Maximum surface temperature: T200 ˚C / T135 ˚C / T100 ˚C
  • Group I Mb for mining

Brakemotors to NEMA – FM standards

  • Class I, Division 1, Groups C,D;
  • Class II, Division 1, Groups E,F and G;
  • Class III

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