Why Choose Castell?

Why Choose Castell?


Castell Safety International has been at the forefront of trapped key interlocking since 1922 when our founder, James Harry Castell, designed the first interlocking systems to protect the people and assets during the electrification of London. Today Castell, from its five global locations, designs and manufactures the world’s widest range of industrial safety interlocking systems ensuring that industry can operate safely around the world.

Our interlocking systems are designed to be robust, durable and are proven in all types of operating environments that meet the demands of the harsh locations our customers operate in. Above all, they are designed to protect personnel and assets where the risk of injury and damage are high.

Castell’s approach to working with customers is deeply rooted in understanding the safety issues found in modern industrial environments. Recognising how safety impacts operations is an important step to designing systems that deliver fast safe access ensuring that efficiency is maintained and output rates are secured.



trapped key interlocks

machine guarding

electric switchgear