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FLS Explosionproof Enclosed Switches

Crouse-Hinds series FLS explosionproof enclosed switches are used in a rigid metallic conduit system as disconnect switches for main feed or individual motor control.  They are typically surface mounted adjacent to, or remote from, the equipment being controlled.

FLS switches are certified for Class I and Class II hazardous areas and prevent arcing of the enclosed switch from causing ignition of a specific hazardous atmosphere, or atmospheres, external to the enclosure.


Certifications and compliances


  • Class I, Divisions 1 & 2, Groups C, D
  • Class II, Division 1, Groups E, F, G
  • Class II, Division 2, Groups F, G
  • Class III
  • UL standard: UL1203
  • NEMA 3, 4, 7CD, 9EFG, 12

Design features

  • Enclosed devices are unfused, visible blade motor circuit switches
  • Rugged cast metal enclosures with mounting lugs and taper tapped hubs with integral bushings, in through feed arrangement
  • Interior of the enclosures is readily accessible through threaded cover openings at each end, set at an angle to facilitate wiring
  • Threaded covers and a threaded type operating shaft and bushing provide quick assembly and easy maintenance
  • A padlock can be used to lock the operating handle in an "ON" or "OFF" position
  • Body and cover threads treated with lubricant at factory to provide raintightness

Standard materials

  • Body – copper-free aluminum
  • Cover – copper-free aluminum
  • Shaft – stainless steel
  • Shaft bushings – stainless steel
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