Conductor bushings

Cable bushings for Ex d enclosures
R. STAHL's 8171 series cable bushings allow power to be supplied to Ex d enclosures. To eliminate the risk of explosions, the bushings are inserted in the enclosure wall such that they prevent the transmission of an internal ignition and are insulated from the enclosure wall. You have a choice of different connection types that comply with the requirements pertaining to enhanced creepage distances and clearances set out in the relevant standard.

R. STAHL's 8171 series cable bushings comprise a duct bolt that is encapsulated with high-quality, non-tracking epoxy resin along with a ring nut to form an inseparable unit. The bushings are inserted in the enclosure wall such that they prevent the transmission of an internal ignition and are insulated from the enclosure wall. This allows power to be safely supplied to Ex d enclosures. If flexibility is a concern, you need look no further, as the cable bushings are available with a choice of connection types: Split-post connections, clamps and soldered connections. The clamping points projecting into the connection chamber enclosure comply with the requirements pertaining to enhanced creepage distances and clearances set out in IEC/EN 60079-7. During installation, you will need to take measures to ensure that the cable bushings do not work loose.

  • Cable bushings for Ex d enclosures: Flameproof and insulated from the enclosure wall
  • For voltages of up to 1000 V and currents of up to 630 A
  • Variants with split-post connections, clamps and soldered connections offer you greater flexibility

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Scope
Zones
Min. ambient temperature
Max. ambient temperature
Description​
Rated operational voltage AC
Rated operational current
Terminal cross-section
Lead length Ex d
Lead length Ex e
Min. conductor cross-section
Min. conductor cross-section2
Conductor quantity
Conductor quantity 2
Thread size
Colour of lead
Colour of lead 2

3 Series (168 Products)

Conductor Bushings Series 8174/1 + /2

  • Current lead-in for Ex d enclosures
  • 1 to 72 conductors combined in one current lead-in
  • Series: screw-in, plug-in
  • For voltages up to max. 1000 V
  • For size conductor up to 70 mm²

Post Type Bushings Series 8171

  • Means of supplying power to lead-in for Ex d enclosures
  • Sealed to prevent propagation of flame on explosion and insulated from wall
  • Versions with: split post connection, clamp connection, soldered connection
  • For voltages up to max. 1000 V and currents up to max. 630 A

Cable entry Series 8175

  • For use in Zones 1 2, 21, 22
  • Plugs and sockets configurable
  • Degree of protection IP 65
  • Versions:
  • plug-in
  • screw-on
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