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Application
The switches are employed as magnet-sensitive contactless
bistable limit switches.
Design and mode of operation
The magnetic switch consists of two dry-reed contacts
embedded in cast resin and mounted in a corrosion-resistant
brass casing. By the motion of a magnet, the contact and
thus the circuit can be made or broken. When the contact is
made, the magnetic field increases by the squared power as
the air gap between the contact studs decreases and the
contact closes abruptly. The contact switches almost
instantaneously owing to the very small distance between the
contact studs and to their low mass.
Magnetic switch bistable
The contact is magnetically locked in its respective
position by means of two magnetic clamps. As the switching
magnet is more powerful, the switch is set when the magnet
moves over and is set back when the magnet returns.
Notice on installation
If the switch is placed on ferromagnetic material, the
switching distance is reduced because the lines of force of
the magnetic field become distorted or shorted when the
switching magnet is brought near. If on the other hand the
switching magnet is placed on ferromagnetic material, the
switching distance is increased because the action of the
switching pole and thus of the entire magnetic field is
increased.
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Magnetic switch monostable
With this switch design, the switch remains activated for as
long as it is influenced by the magnetic field. The switch
returns to neutral position when the magnet is removed.
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