Safety Switches for Machines

The safety switches have been developed ordinally as water protected door contacts for the elevator industry. In this aspect KRONENBERG has set the standard. The novel principle has been adopted into the regulations of the professional association. Safety switches are used millions of times to control the protection of enclosures of machines. Features: positive opening, water protected, manipulation protected.


WZK - compact version with up to three contacts

The small water-protected safety switch WZK is a safety switch with positive contact and is used to control the close position of lift doors. The switch is especially small and therefore suited for reduced space conditions. The actuator is mounted on the door panel. If the actuator is pulled off of the switch a forced opening of the contact takes place. The 2 m cable is already connected to the switch and supplied as standard.
>> Technical Data / PDF

 

WZA - with actuation from any direction by revolving drive head

The water-protected safety switch WZA is a safety switch with positive contact and is used to control the close position of elevator doors. With the infinitely variable revolving drive head it can be actuated from any direction and allows smallest swivelling radii. The actuator is mounted on the door panel. If the actuator is pulled off of the switch a forced opening of the contact takes place.
> Technical Data / PDF

 

WZF - with protection against manipulation

The water-protected safety switch WZF is a safety switch with positive contact. By the multiplex coding an increased protection against manipulation is assured. The large tolerance between contact-making to the stop of the actuator (5.5 mm) ensures that at shaking protective enclosure no contact interruption may occur.
If the actuator is pulled off of the switch a forced opening of the contact takes place.


> Tecnical Data / PDF

WZF2 - with long actuation travel

The water-protected safety switch WZF2 is a safety switch with positive contact. It is very robust and has a long actuation travel. Thus the unwanted switching off of the maching by shaking of the protective enclosure is avoided. If the actuator is pulled off of the switch a forced opening of the contact takes place.

> Tecnical Data / PDF

 

WZV 2 - unlocking control and locking of doors

The water-protected safety switch WZV 2 is a safety switch with positive contact and equipped with a locking mechanism. The actuator is mounted on the door panel. The locking bolt plunges into the actuator and prevents the opening of the door. If the built-in electromagnet is actuated, the locking bolt is drawn back from the actuator and the door can be opened.
Technical Data / PDF

 

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