• European Union (ATEX)
  • IECEx
  • North America (CSA, FM, UL)
  • Canada


  • Gas - IIC
  • Dust - IIIC
  • US Gas - (Class I)


  • Gas Area - Zone 1
  • Dust Area - Zone 21
  • US Gas Area - Div 1


  • Gas Temp. - T4 (135C)
  • Dust Temp. - T135C
  • US Gas Temp. - T4 (135C)
  • Lower Ambient Temp - -20C
  • Higher Ambient Temp - Greater than +40C


  • Gas Concept - Ex p /px /py / pz
  • Dust Concept - Ex p / pD
  • US Gas Concept - AEx /Ex px / py / pz


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Supplier Details

  • Address:

    Unit 2 The Summit, Sunbury-on-Thames, Middlesex TW16 5DB United Kingdom

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Expo Technologies Purge & Pressurized Enclosures

Enclosures » Junction Boxes & Enclosures

Expo’s complete Purge and Pressurized enclosures enable you to install uncertified electrical equipment in hazardous areas.

Our certificates let us deliver a complete range of custom solutions.

Quick Access: Easily open purged cabinets for maintenance in hazardous areas;

Controls Options:

  • Windows: for viewing displays;
  • HMI units either directly, if they support pressurization, or into inset housings, if separately approved;
  • Operator interfaces: push buttons, lamps, switches, and annunciators.  We must use certified components since they sit outside the enclosure.

Heating & cooling: Our enclosures often include local heating or cooling.

Wheels: Move certified electrical equipment between points of use in hazardous areas.

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