EMH Explosionproof Instrument Enclosures

Certifications and compliances

NEC/CEC

• Class I, Divisions 1 & 2, Group D
• Class II, Division 1, Groups E, F, G
• Class II, Division 2, Groups F, G
• Class III
• NEMA/EEMAC: 3, 7D, 9EFG, 12
• UL Standard: 1203
• CSA Standard: C22.2 No. 30

• Sight glass in cover permits viewing of instrument dial or setting
• Enclosures are non-magnetic, available in surface mounting and flush panel mounting; the cylindrical extension of the cover opening on the flush bodies will project through a hole in panel; thickness of panel must not exceed 1/4″ to ensure flametight assembly of cover threads with body threads
• Mounting plates and posts in bodies support the instrument close to the heavy glass window in cover; maximum depth of instrument extending from outboard end of posts toward the back wall of enclosure body is 3″; there is ample wiring space in back of instruments
• Bodies have bosses on all four sides and back for drilling and tapping of conduit entrances
• Dead end and through feed arrangements for 3/4″ rigid conduit are standard listings

• Bodies and covers – copper-free aluminum
• Windows – heat strengthened plate glass