We also welcome your comments and any criticism, as this will help us to improve and to create new solutions.


tounge-operated-switches and Safety Interlocks

Welcome to Haake Technologies in Germany.

Manufacturer of tounge operated switches, locks, safety mats, safety edges and bumpers

A few words

Tounge operated Switches: When we started, in 1987, to translate our ideas into products like Tounge operated Switches, we did not have a clue as to where our entrepreneurial trip would end. At the time, production, design, and sales of Tounge operated Switches took place in our parentsí garage! Ourís would have been a short story, if not for the support of our very first customers and suppliers. Because of their original commitment to us, absolute customer orientation is the number one priority for our colleagues and us.

Since our founding, several product groups like Tounge operated Switches have been designed and successfully launched in the machine safety devices market.
With our subsidiaries and distribution partners for Tounge operated Switches in the major industrial countries, we are able to serve our customers in all aspects of labor safety. As a family-owned company, we attach the highest importance to quality for Tounge operated Switches, and for this reason we are proud to connect our own name with our tounge operated switches and services. We look forward to your enquiries. We also welcome your comments and any criticism, as this will help us to improve and to create new tounge operated switches. <2>Advantages of Haake
tounge-operated-switches Benefits offered by the trapped-key system, e.g. tounge-operated-switches:

- high safety, individual codes
- only pre-determined sequences securing safety are possible
- no spare tongue "in the pocket"
- no cables to the individual guards (cost saving, faults prevented)
- easy retro-fitting
- tounge operated switches have locking feature
- particularly suited when there are different energy sources for the machine (electric, pneumatic, ...)
- in areas where people might get trapped: personal safety key
- simple possibilities for teach in
- time delay due to key transfer between switch and guard interlock - run-down processes come to a standstill (if necessary, extend by additional unit)

Haake offers safety interlocks (e.g. tounge-operated-switches) with multifold applications for:

safeguarding operators
Automotive industry
Machine tools
Packaging machines
Building industry
Chemical industry
Plastic processing
Oil / gas
Power generation / distribution
Environmental protection
Power stations

Switch HST-S and tounge operated switches

Tounge operated Switches: The switch HST-S is used for isolating the machine, in order to permit safe access. After the voltage has been switched off, the previously trapped key can be removed and used for the next step in the sequence, e.g. opening a guard.
Tounge operated Switches: The unit is available as an enclosed (IP 65) or a panel mount version. Versions with multiple locks (enclosed version sheet-steel up to 4, panelmount version up to 10) are also available. Further, versions in explosion-proof enclosures (ATEX zones 21 & 22 and 1 & 2) can also be supplied.


Here you will find information about tounge-operated-switches and:
Tounge operated Switches