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Simplifying Complexity. Delivering Safety.
Simplifying Complexity.
Delivering Safety.

Mini Environmental Pressurization System (MiniEPS)

Electrical enclosure protection for dirty and corrosive environments


  • Prevents contamination inside electrical enclosures
  • Suitable for enclosures up to 7 m³ capacity
  • Compact, all-in-one solution
  • Simple installation and set-up
  • Stainless steel panel construction

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  • Description
  • Specifications
  • Downloads
  • Manuals


Harsh conditions, such as corrosive, dirty or dusty environments, can shorten the life of electrical components and systems, even inside enclosures, leading to increased maintenance, premature failure and additional costs.

Enclosure pressurization with clean dry air is an ideal protection method, as it prevents contaminants from entry.

Building on Expo’s proven pneumatic purging technology, the Mini Environmental Pressurization System (MiniEPS), is a low cost, simple to install unit.

Read more here in our whitepaper:"Extending the Life of Electronics in Harsh Environments"


Air Inlet
Instrument quality air, 2-7 barg
Pressurisation capacity
Flow rate up to 100 NI/min.
Suitable for enclosures up to 7 m³ capacity, dependent on leak rate.
Temperature range
-20°C to +60°C 
Pressure relief
Integral relief valve, set at 10 mbar
Corrosion-resistant, meets UL50e, NEMA 4X / IP66 protection standards
Signal Outputs
Low pressure alarm –nominally 1.25 mbar (volt free contacts)