Magnetic Switch  Manufacturers, Traders, Suppliers

Magnet switches are used for the registration of the position of moving parts, when a positive-opening of the contacts is not necessary. The contact-making is very reliable, as the contact is located in a hermetically enclosed small glass-tube with protective gas, which prevents oxydation and the formation of dust. The actuation is made by the approach of a permanent magnet. Magnet switches are available in monostable and bistable versions. With the bistable version, the reed-contact stays switched, even after removal of the per-manent magnet. The contact only is reset, when the magnet passes the reed-contact from the opposite direction (travel direction of the lift), or if a magnet with an opposite polarity approaches. Interesting is the new magnet block with six magnet switches and the possibility to extend up to eight magnet switches. In comparison to the individual assembly the use of this magnet block leads to a significant cost reduction.

Magnetic switches are commonly used in pneumatics to sense the cylinder pistons’ position. Magnetic switches react to a magnet incorporated into the cylinder piston which causes an electric signal to be turned on or off when close to the magnetic switch’s switching range. Magnetic Switches with LED display without an own power supply may not be connected to other magnetic switches in series.
Use connection cables which are as short as possible. The inherent capacitance to cables may cause malfunctions. Cables should not be in immediate reach of larger iron parts or electronic motors. Dysfunctions due to mutual inductions are possible. Magnetic switches are able to sense a signel at a speed of 1 m/sec. Distance is proportional to the force of the magnet.