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Key exchange box

A key exchange box (KEB) is used when any number of keys need to release any other numbers of keys. For example, when a single key from a switch needs to release 5 keys to go to several hatches the key exchange box makes this exchange: the key from the switch is inserted, only after which any number of keys can be removed to operate other interlocks. Only when all keys have been returned does this unit allow removal of the initiating key. These key exchange boxes are purely mechanical, however they can be designed to house any kind of electromechanical setup including limit switch or linear solenoid magnets.
The key exchange box of Alcatraz Interlocks comes in various sizes based on your exact needs.

Key exchange box applications

Applications for key exchange boxes are settings where you have a complex sequence to provide a safe working environment and prevent accidents in critical installations, like:

  • Valve operations
  • Separators
  • Dryers
  • Granulators
  • Centrifuges
  • Electrostatic precipitators

Download specs for Key exchange box Interlocks

Key exchange box specs and features

Key exchange boxes are a custom made product. Depending on the sequence and how you want to prevent and guard your employees and machines.

  • 316SS body

Feature and benefits
  • It is custom made you can control the sequence
  • Possible to have an electromechanical setup

Our specialists

Meet specialist Dennis

Do you want to operate safely and prevent failures in your applications? Contact Dennis or one of our technical engineers to discuss how to do it.



Do you want to receive more information about our custom-made valve interlocks and trapped key solutions on your application? Please fill in the contact form and we will respond as soon as possible.


Electrical Key Cabinets

An Electrical Key Cabinet consists of integrated electromechanical components preventing key removal.

Spare Keys

The spare keys are intended to briefly replace a lost key until a replacement has been purchased.

Sequence control units

This is a mechanical device that is designed to fulfil client's complex non-linear Interlocking Sequence requirements.