EIH and EIHT Explosionproof Instrument Enclosures
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EIH and EIHT Explosionproof Instrument Enclosures

Eaton's Crouse-Hinds series EIH and EIHT explosionproof instrument enclosures are used to enclose instrumentation and control devices such as two-wire transmitters, flow measurement devices, temperature controls, level detectors, pressure switches, etc. in hazardous, abusive and wet locations.

EIH and EIHT enclosures can also be used as an outlet box for pulling and splicing conductors, and to provide access to conductors for maintenance and future system changes.

Certifications and compliances


  • Class I, Division 1 & 2, Groups B†, C, D
  • Class II, Division 1, Groups E, F, G
  • Class II, Division 2, Groups F, G
  • Class III
  • NEMA/EEMAC: 3, 4, 4X*, 7B†CD, 9EFG
  • UL standard: 1203
  • CSA standard: C22.2 No. 30


  • FM Classification No.: 3615
  • ATEX certificate: KEMA 02 ATEX 2265U (requires ATEX suffix)*
  • IEC standards: EN:60079-0, EN:60079-1, EN:60529

*EIH only.

†For Group B applications, seal within 1- 1/2" of enclosure in accordance with Sections 501-5 of the National Electrical Code as well as any other applicable codes.

Design features

  • 3/4" offset through feed hubs offer maximum interior space and greater working area
  • 2" and 4" deep covers, solid or with glass lens
  • Internal mounting pads for instrument mounting
  • Internal ground screw for safe, continuous grounding
  • Neoprene gasket provides a watertight seal for NEMA/EEMAC 4 and UL/CSA Type 4 applications
  • Wrenching lugs permit easy cover removal and tightening
  • Internal cover threads provide additional space inside body
  • External boss is suitable for drilling and tapping an additional conduit entry
  • Two separate chambers for isolation of power supply and instrument (EIHT only)
  • 3/4" hub on instrument side (EIHT only)
  • Third party certified for drilling enclosure wall between instrument and power side (EIHT only)

Standard materials

  • Body and cover – copper-free aluminum with Corro-free epoxy powder coat (gray)
  • Lens – heat tempered glass
  • Gasket – neoprene