Cable Glands

Cable glands

Cable glands are defined as ‘mechanical cable entry devices’ which are used in conjunction with cable and wiring for electrical, instrumentation & control, and automation systems, including lighting, power, data and telecoms.

The main functions of the Cable Gland are to act as a sealing and terminating device to ensure the protection of electrical equipment and enclosures, including the provision of:

  • Environmental protection – by sealing on the outer cable sheath, excluding dust and moisture from the electrical or instrument enclosure.
  • Earth continuity – in the case of armoured cables, when the cable gland has a metallic construction. In this case cable glands may be tested to ensure that they can withstand an appropriate peak short circuit fault current.
  • Holding force – on the cable to ensure adequate levels of mechanical cable ‘pull out’ resistance.
  • Additional sealing – on the part of the cable entering the enclosure, when a high degree of ingress protection is required.
  • Additional environmental sealing – at the cable entry point, maintaining the ingress protection rating of the enclosure with the selection of applicable accessories dedicated to performing this function.

Cable Gland Sizes: Selecting Correctly

The following steps, together with the information throughout our cable gland catalogue, will ensure that the CMP cable gland size and specification selected will be fit for purpose and perform optimally.

Alternatively, view our full range of cable glands here.
Identify the type of cable to be used
Check the construction, size and material
properties of the cable
Check the size of the overall cable diameter ‘B’

  • Short circuit fault current rating of the cable armour
  • Diameter of the inner bedding (where present) ‘A’
  • Diameter of the lead covering (where present)
  • Size and type of armour or braid (where present) ‘C’
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