EDS and EFD Series Explosionproof Snap Switches


EDS and EFD Snap Switches are used:

  • To prevent arcing of enclosed switch from causing ignition of a specific hazardous atmosphere external to the enclosure
  • In industrial areas such as oil and gas refineries, paint and varnish manufacturing plants, gasoline bulk loading terminals, grain elevators and coal processing where atmosphere may contain hazardous gases and/or dust
  • NEC/CEC:

                Class I, Divisions 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, 7B*CD, 9EFG, 12
  • UL Standard: 1203
  • CSA Standard: C22.2 No. 30


*Class I, Group B: All units can be modified for Class I, Group B usage.  Add suffix GB to the catalog number.  Seals must be installed within 1 1/2" of each conduit opening in Division 1.