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SWI PS01 Series | Magnetic Position Switch

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Sensors and Switches are mechanical-type sensing devices that do not require power to operate. Engineered based on time-proven principles such as buoyancy, conductivity, magnetic latching, capacitance and more, SWI sensors and switches are manufactured to provide reliable industrial process measurement year after year. Click on a sensing device below to learn more about our available sensors and switches product line.

SWI PS01 Series | Magnetic Position Switch


The PS01 Position Switch is a magnet-actuated device designed for use in the typical applications of safety interlocks, position indication, equipment automation, door interlocks, and other general purposes. Equipped with flange-type mounting attachments, the PS01 is easily installed into any application. Housing materials are available in Kynar, Nylon or Noryl with various switch types. Internal magnetic materials are Neodymium or Alnico. Cable lengths are made-to-order up to 99'.

Principles of Operation

As a magnet approaches a proximity switch, the internal reed switch changes state. The switch closure creates a continuous electrical path through the TRIAC, powering the connected load. Once the magnetic field is removed, the switch returns to its original state.

SWI PS01 Series


  • Two-Part Assembly: Magnet Housing & Reed Switch Housing
  • Encapsulated Reed Switch
  • Easy Installation Flange-Type Mount
  • UL-Approved
  • No Calibration Required
  • No Moving Parts


  • Safety Interlocks
  • Position Indication
  • Equipment Automation


PS00 Magnet Kynar - - Neodymium 1-3/16" NOM. 1-1/2" NOM.  -20º to +140º F (-29º to +60º C)
PS00 Magnet Kynar - - Alnico 1" NOM. 1-1/4" NOM.  -20º to +140º F (-29º to +60º C)
PS01 Switch Kynar 240 VAC/VDC TRIAC NO/NC 1.25 Amp - 1-3/16" NOM. 1-1/2" NOM.  -20º to +140º F (-29º to +60º C)


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Metex Corporation Limited has been providing superior products and services to the process control, chemical treatment, waste water, industrial and manufacturing industries for over 25 years. It is our goal to continually provide our customers with the best possible equipment, technology, and service.


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