EJB Series Explosionproof Enclosures

EJBs are used in hazardous areas:

  • As a junction or pull box
  • To provide enclosures for splices and branch circuit taps
  • For housing terminal blocks, relays and other electrical devices
  • In areas which are hazardous due to the presence of hydrogen or gases and vapors of equivalent hazard such as found in process industries, missile bases and gas manufacturing plants
  • NEC/CEC:

                Class I, Divisions 1 and 2, Groups B*, C† and D‡
                Class II, Division 1, Groups E, F and G
                Class II, Division 2, Groups F and G
                Class III
                Class I, Zones 1 and 2

  • UL Standard: 1203
  • cUL to CSA Standard C22.2 No. 30
  • ATEX: Ex d IIB + H2 T6, IP66
  • ATEX certificate: PTB 01 ATEX 1020 U
  • Enclosure Type 3, 3R, 4, 4X*, 7BCD, 9EFG
  • IEC Standard: EN:60079-0 and EN:60079-1



*For Group B, install sealing fitting in each conduit run within 18" of the enclosure. To meet 4X requirement, add suffix S752 or S753.
†EJB361208, 361808, 362408 and all style D enclosures require sealing fittings within 18" of enclosure for each conduit run for Group C  locations.
‡Style D enclosures require sealing fittings within 18" of enclosure for each conduit run for Group D locations.