Contact-free Limit Switch 024.50

Remote controlled and 360º visible open/closed position

On/off limit switch

Limit switches are used to control, monitor and view the position of the valve or to activate other system components.

There are different versions of on/off limit switches in the market. The most common are based on the principle of mechanical switches, proximity sensors or potentiometers.

SED has designed and engineered a contact-free limit switch with magnet field measurement technology, which makes it remotely controlled. Apart from lifetime and among other features the advanced design allows also a more reliable sealing method.


  • For single and double-acting valve control functions
  • Indicates two or three positions
  • Colored LED light feedback of valve position visible for 360°
  • Contact-Free magnetic measuring design
  • Suitable for linear and rotary actuators
  • Linear stroke measurement of 3-45 mm
  • Backlash free stroke transmission
  • Short circuit proof
  • Compact and robust design
  • Hermetically sealed
  • Easy mounting without additional adapter kits
  • 360° adjustable mounting position
  • Initial programming by light or 24V Signal (5th pin)
  • Set point protection
  • High switching current
  • High chemical resistance
Size MA8 - MA100
Max pressure 8 bar
Temp. range -10 C to +70C
Electrical connection M12, 5-pin A-coded connection
Power supply and programmign 24V DC of 8V DC
Material Housing: PPSU


  • ATEX II 2G Ex / II 2D Ex  / II 3G Ex
  • IO-link
  • Teach-in cable for the programming via the 5th pin

pdfDatasheet Limit Switch 024.50
English - 846 kB - TD16 0217.024.50 Rev. b

pdfOperating instructions Limit Switch 024.50
English - 610 kB - BA15 0002 Rev. c