Screened cable glands

EMI sealing and RFI protection for cable entries

If you want to route cables through walls or enclosures while protecting your equipment from interference, shielded cable glands are a solution. They act as a seal where the cable enters a cabinet or box and ensure that no potentially harmful signals (EMI and RFI) can enter or exit through the cable. This is particularly important in environments with a lot of electronics, such as data centres, hospitals or industrial plants, where interference can lead to faults or outages.

What is a screened cable entry?

A shielded cable entry is a small part, often made of brass or other conductive material, that is fitted where the cable passes through a wall or enclosure. It provides both strong protection against electromagnetic interference and acts as a strain relief, ensuring that the cable is firmly in place and not at risk of damage.

Why use EMI sealing and RFI protection for cable entries?

• Protects your electronics from interference and failure
• Secures the cable and reduces the risk of damage
• Meeting security requirements in sensitive environments
• Available in several sizes and materials for different needs

Which type should I choose?

• Size of the cable:
  Choose a cable gland that fits the diameter of your cable. Swelex has models for cables between 1.5 and 16 mm, so measure your cable before ordering.
• Material:
  Brass is common and provides good conductivity and durability. Other materials are also available for more specialised needs. Contact us for more information. 
• Protection level:
  If you have extra sensitive electronics, choose a model with high EMI and RFI sealing. This ensures that both high and low frequencies are blocked equally effectively.
• Strain relief:
  All shielded cable entries also act as strain reliefs, reducing the risk of cable loosening or damage during movement.