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bl2412-connector-protection-e

PULL/STRAIN RELIEF AND CABLE GLANDS

There’s little point safeguarding the cable entry aperture if the wire itself remains a weak point. Cables must be protected from pull forces and also from being weakened internally by bending or twisting at severe angles.

Pull-relief or strain-relief clamps will hold a cable in place securely. And a flexible gland will brace the cable as it bends, transforming a sharp 90° angle into a more graceful curve that doesn’t damage the thin wires inside the insulation.

If using cable glands, specify one that complements the ingress protection and flammability resistance of the enclosure. Many cable glands are molded from polyamide. PA is specified for cable glands because it is strong and resistant to chemicals, corrosion, heat and cold. Some types – such as PA12 – absorb less moisture than P6 or PA66 so they’re well suited to wet environments.

Not all cable glands are made equal. Quick-fix cable glands can speed up the installation process. And pressure compensation cable glands are recommended for protection against condensation in hermetically sealed enclosures in the event of temperature fluctuations.