Cable Glands: A Quick Look at Their History

Cable glands are important little pieces that help connect and protect electrical wires going into equipment. They stop wires from getting pulled or twisted, and they prevent dust and water from getting in. In this blog post we will give a very brief history of cable glands, what was used before cable glands, and how it all began!

In the early days of electrical installations, as electricity began to power more of our world, the need for safe and reliable methods for protecting cables became increasingly apparent. When electricity started being used more, people needed safer ways to handle wires. Before cable glands, wires were just insulated and stuck in place with electrical tape. This wasn't very safe, especially in places where if any malfunction were to occur with the wires, sparks could cause a fire (or worse). Thus, cable glands were made to help prevent accidents and keep people safe.

Around 1919, a company called WISKA made what's often called the first real cable gland. It was made of brass and was primarily intended for the use of the shipbuilding industry. Brass was good because it was not only strong, but it didn't rust easily (a crucial factor in the marine environment). Soon after, in 1922, another company called Jacob GmbH, also started making cable glands and cord grips.

Later, around 1925, plastic started being used to make cable glands. WISKA made “ISOTABIL”, a cable gland made out of Bakelite, which was lighter and cheaper than brass. Bakelite is synthetic plastic. The use of Bakelite offered several advantages, providing a lighter alternative to brass, proving more cost-effective for a wider range of applications, and resistance to saltwater, weaker acids, and grease. Later, stainless steel became popular because it was even better at resisting rust, especially in tough places like the ocean or chemical plants. Other materials like aluminum and special plastics are also used today. The way cable glands are designed also got better, with things like strain relief cable glands, and right angle cable glands.

Now, you can find cable glands everywhere, from factories to ships to even medical equipment. There are even special ones that block electrical interference or work in dangerous areas. From simple beginnings with brass to today's advanced designs using different materials, cable glands have come a long way. Their often-underestimated role in providing strain relief, environmental sealing, and electrical continuity has made them crucial components in ensuring the safety, reliability, and longevity of electrical systems across countless industries.

Here at Ferrules Direct we offer a wide collection of cable glands! If you have any questions at all, feel free to contact us and one of our experts will be glad to assist!