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ECD Explosionproof Breathers and Drains

Crouse-Hinds series ECD breathers and drains are for use in hazardous location conduit systems to drain accumulated condensate and provide ventilation to minimize condensation.  A breather is installed in the top of an enclosure or in the upper section of a conduit system.  A standard drain is installed in the bottom of an enclosure or in the lower section of a conduit system.  At least one breather should be used with each drain.  

ECDs are also available in universal and combination models. 

  • A universal ECD functions as a breather when mounted at the top of an enclosure, or as a drain when mounted in the bottom of an enclosure.  
  • Combination ECDs are used in those applications where the use of a top mounted breather is not practical due to limited space, or in offshore and marine installations where moisture may enter the enclosure through the breather located on top of the enclosure. 
ECD Explosionproof Breathers, Drains

Certifications and compliances

NEC/CEC

ECD16, ECD387, ECD-N4D, ECD-N4B

  • 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
  • Type 4X (ECD-N4D and ECD-N4B only)
  • IP46 (ECD-N4D and ECD-N4B only)
  • IIB + Hydrogen (ECD-N4D and ECD-N4B only)

ECD11, ECD13

  • 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

ECD18, ECD384, ECD15, ECD385

  • Class I, Divisions 1 & 2, Groups C, D
  • Class II, Division 1, Groups F, G
  • Class II, Division 2, Groups F, G
  • Class III

ECD284

  • Class I, Divisions 1 & 2, Group C, D
  • Class II, Division 1, Groups F, G
  • Class II, Division 2, Groups F, G

UL standard

  • UL1203

CSA standard

  • C22.2 No. 30

ATEX

  • ATEX certificate #ITS07ATEX15639U

Design features

Standard ECD drains and breathers

  • Thread-in shaft design
  • ECD11 and ECD13 have capability to pass 25 cc of water per minute and .05 cubic feet of air per minute at atmospheric pressure
  • ECD387 and ECD16 can pass 15 cc of water per minute; ECD16 can pass .01 cubic feet of air per minute
  • ECD1 N4D average drain rate is 13.5 cc per minute

Universal drains and breathers

  • Patented labyrinth design, suitable for use in Class I, Divisions 1 & 2, Groups C, D and Class II, Divisions 1 & 2, Groups F, G areas
  • Capability to pass 50 cc of water per minute and 0.2 cubic feet or air per minute at atmospheric pressure 
  • ECD15 and ECD385 each have a well inside the inner, threaded end to provide for accumulation of sediment without clogging when used as a drain

Combination ECD breather and drain

  • Provides ventilation to minimize condensation and drains accumulated condensate – two functions performed by a single device installed in the bottom of an enclosure or conduit system
  • Has the capability to pass 25 cc of water per minute and .10 cubic feet of air per minute at atmospheric pressure
  • Thread-in-thread and labyrinth design, suitable for use in Class I, Divisions 1 & 2, Groups C, D; Class II, Divisions 1 & 2, Groups F, G; and Class III areas

Standard materials

  • ECD11, ECD15, ECD284, ECD384, ECD385, ECD16, ECD-N4D, ECD-N4B, ECD387 – stainless steel
  • ECD13 – stainless steel with aluminum cap
  • ECD18 – stainless steel with neoprene tube
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