Cable Gland
A cable gland is a mechanical fitting that terminates a cable where it enters an enclosure, providing strain relief, sealing against dust and water and, for armoured cables, earth continuity. A gland consists of a body, seal and compression nut; armoured-cable types add a cone and clamping ring for wire or tape armour. Common materials are nickel-plated brass, stainless steel and polyamide. For hazardous areas, glands are certified as Ex d (flameproof) or Ex e (increased safety), and compound-filled barrier glands are used where IEC 60079-14 requires them. Selection parameters include cable type and outer diameter, armour type, entry thread (metric, NPT or PG), IP rating, temperature range and Ex certification under ATEX or IECEx. General requirements are given in IEC 62444, and Ex glands are tested to IEC 60079-0, -1 and -7.
Examples
- Ex d barrier gland for a Zone 1 motor terminal box
- Armoured-cable gland for an outdoor junction box
- Polyamide gland for an instrument enclosure