Switches / Door Contacts

Since the foundation of the company, reliability and long service life have been the major design factors for all products, including switches. By innovation and quality of the products Kronenberg has developed into one of the leading manufacturers of switches for the world wide elevator industry. KRONENBERG switches are in the true meaning of the word "standard", with the result that many other companies have copied our concept and design details. Kronenberg switch contacts are silver plated and self-cleaning. The correct tension is applied to the switching mechanism for reliable contact switching. All plastics in the contact area are of self-extinguishing quality.

 

HZTK -  door switch and switch for locking mechanism

The new, innovate HZTK is a safety switch with forced actuation which can be used as door closed switch and switch for locking mechanism. It has been evaluated by the TÜV and is available in two models. Together with the standard design (HZTK-1) a higher model is available (HZTK-2) at which the connection cables can be laid on the underside of the switch. If used as switch for locking mechanism the supervision function is guaranteed despite the low forces of the locking mechanism (hook lock) and a possible backlash of the doors up to 4 mm.
By flexible connection possibilities the switch can be connected comfortably in almost all common operating positions. High contact safety by self-cleaning contacts with silver plate and a permanent and safe connection with screw terminals with pull slide system ensure a reliable operation.
>> Technical Data / PDF

PZ73 - standard switch

The door contact PZ 73 is a safety switch with positive contact and is used to control the close position of lift doors or as a switch for locking mechanism on automatic doors. The PZ73 is the standard switch in the lift industry with unmatched basic principle. The door contact is actuated by contact bridges PZ18, PZ21; DZ18;
DZ21; PZ18SO or PZ24. For the door contact PZ24 the protection against accidental contact has to be considered separately.
>> Technical Data / PDF

DZ73 - safety switch in long version

The door contact DZ73 is a safety switch with positive contact and is used to control the close position of lift doors or as a switch for locking mechanism on automatic doors. In design the DZ73 is identical with the PZ 73, but has a longer structural shape. The door contact is actuated by contact bridges PZ18, PZ21; DZ18; DZ21; PZ18SO or PZ24. For the door contact PZ24 the protection against accidental contact has to be considered separately.
>> Technical Data / PDF

HZ - for automatic doors

The door contact HZ is a safety switch with positive contact and is preferably used for the control of the locking of automatic doors. The switch copes as well with longitudenal movements at small swivelling radius of the contact bridge. The door contact is actuated by contact bridges PZ18, PZ21; DZ18; DZ21; PZ18SO or PZ24. For the door contact PZ24 the protection against accidental contact has to be considered separately.
> Technical Data / PDF

HZS - actuation from the small side

The door contact HZS is a safety switch with positive contact and is used to control the close position of lift doors or as a switch for locking mechanism on automatic doors. The door switch is actuated from the small side (rectangular to the screw-on area) by the contact bridges PZ18, PZ21; DZ18; DZ21; PZ18SO or PZ24. For the door contact PZ24 the protection against accidental contact has to be considered separately.
> Technical Data / PDF

RZ - for sliding doors for service lifts

The sliding door positive contact RZ is a safety switch with positive contact and is preferably used to control the close position of two-part doors on service lifts. The contact bridge consists of a silver-plated double roller that rolls over the stationary contact and bridges electrically.
> Technical Data / PDF

DZRK - enhanced protection against manipulation

The door contact with additional reed contact DZRK is a safety switch with positive contact and is used to control the close position of lift doors. The additionally built-in reed contact offers a high protection against manipulation because the actuation is only possible with a special contact bridge equipped with a permanent magnet. The control of the door is done by two different methods.
> Technical Data / PDF

   

WZ - door switch with water protection

The water-protected safety switch WZ is a safety switch with positive contact and is used to control the close position of elevator doors. It is very robust and therefore especially suited for lift doors. 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
   

Test bridge - for bridging of door switches for maintenance personnel

The test bridge is infinitely adjustable from 14-36 mm and can therefore be used
for the most common door contacts on the market. It considerably facilitates the
service technician's work in the fields of maintenance, service and repair.

   

 

 

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