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HST® trapped key interlock systems from Haake are used to safely access hazardous areas in machines. Keys to open doors or flaps are only obtained when the danger has passed, the machine has come to a standstill, and the lock can be safely opened. HST from Haake is the only Trapped Key Interlocks that has been correctly certified straight out of the factory according to Machinery Directive 2006/42/EC Annex X.

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  • Door interlocks

    Door interlocks

    The locking mechanism is an industrial lock with side locking. It is used on hinged parts of machines such as entrance doors, hatches, flaps. The door can be opened by using an encrypted key.
  • Switching element with time delay

    Switching element with time delay

    The switching element with time delay is used to cut off the power supply to the circuits of machines or installations, gradually with ramp-down time, with rated currents up to 20A.
  • Switching elements

    Switching elements

    Schakelelementen met vergrendeling worden gebruikt om de stroomtoevoer naar de circuits van machines of installaties (zonder uitlooptijd) uit te schakelen. Met de vrijgekomen sleutel kunnen vervolgens deuren of luiken veilig worden geopend. Voor machines met uitlooptijd kunnen schakelelementen met tijdvertraging worden gebruikt.
  • Key exchange stations

    Key exchange stations

    Sleutelwisselstations van Haake worden gebruikt om op een veilige manier de sleutels van een machine te borgen. De secundaire sleutels kunnen niet worden verwijderd uit het wisselstation zolang de primaire sleutel niet ook aanwezig is. De primaire sleutel dient namelijk eerst verwijderd te worden uit een schakelelement, om vervolgens de secundaire sleutels uit het wisselstation vrij te maken. In tegenstelling…
  • Locking mechanisms

    Locking mechanisms

    Locking mechanisms are used to lock the main switch of a machine. By turning the key, the bolt moves in the recess of the switch and thus prevents the machine from being activated.

In addition to ISO 9001: 2008 certification, Haake has introduced the Full Quality Assurance System (FQA) in accordance with the guidelines of Annex X of the Machine Directive 2006/42/EC. This system was subsequently certified by the Notified Body DGUV. It enables Haake to deliver every individual HST® system without further certification by a Notified Body. This is mandatory for safety components that are supplied individually and are not covered by harmonized European standards. In short: Where other trapped key interlock systems in the market still have to be individually certified by a Notified Body after delivery, the Haake HST® system immediately meets the required safety standard up to a maximum Performance Level 4 (PLd). This not only saves time, but also significant costs.

  • High degree of security through individually coded keys
  • No additional electrical connections, easy for retro fitting and new construction
  • Extremely robust and industrial, free of maintenance (RVS316L)
  • Suited for applications where people can become trapped or stuck
  • Also suitable for machines with an overrun time
  • The only Trapped Key Interlock system that is correctly factory certified according to Machinery Directive 2006/42/EC Annex X.