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EBM Explosionproof Disconnect Switches

Crouse-Hinds series EBM explosionproof disconnect switches are used to disconnect motors, lighting and other circuits in locations made hazardous by the presence of flammable gases or vapors or ignitable dusts.

Certified for use in Class I and Class II hazardous areas, EBM disconnect switches are also NEMA 4X rated for use indoors or outdoors in damp, wet and dirty locations where frequent wash downs, heavy rain or water spray is prevalent.


Certifications and compliances


  • 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

UL standards

  • UL1203
  • High AIC rating (interrupting capacity) for Class I, Division 1, Groups C, D only
CSA standard
  • C22.2 No. 30
Environmental ratings
  • NEMA 3, 3R, 4*, 4X†, 7BCD, 9EFG, 12

*Enclosure not suitable for NEMA 4 or 4X with cover mounted operators.

†With S752 or S753 option.

Design features

  • Rugged, corrosion-resistant cast copper-free aluminum construction (less than 0.4 of 1%)
  • Switch operating handle, located through the right side wall of the body, permits visual confirmation of correct alignment and operation
  • Total compliance to the wiring end room requirements of the National Electrical Code
  • Semi-clamshell enclosure design, with an external flanged ground joint between body and cover, makes interior components more accessible
  • Minimum enclosure-to-enclosure spacing with little interference between the opened cover and an adjacent enclosure
  • Stainless steel hinges allow the cover to swing well out of the way
  • Stainless steel quick release captive hex head cover bolts; stainless steel springs provide clear indication that cover bolts are fully retracted from the body
  • Switch operating handle can be padlocked in either the "ON" or "OFF" position
  • Neoprene cover gasket permanently attached to the cover seals out moisture
  • Bodies have top and bottom drilled and tapped conduit entrances for power and conduits; removable reducers are supplied as standard, to accommodate smaller size conduits; all conduit entrances are plugged
  • Tap on mounting feet

Standard materials

  • Body and cover – copper-free aluminum
  • Operating handle – copper-free aluminum
  • Operating shaft and bushing – stainless steel
  • Interior parts – sheet steel, electrogalvanized
  • Cover bolts, washers and retractile springs – stainless steel
  • Hinges – stainless steel
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