Side Mount Liquid Level Control Switch


  • Model: FSW3


Product Description:

This switch will open or close the electric circuit when liquid level reaches a specific position. It can be used to activate a pump when liquid level is low, or to open the heating circuit to prevent the damage of the heater.   For cutting off the heating circuit when liquid level is low, the sensor tip should be mounted downwards as shown.  Since the switch is rated for 0.4 Amp, a typical wiring is to put it in series with relay (or solid state relay) control loop. 

FSW3 in its "open" position

FSW3 in its "open" position. Length in mm.


  • Float switch (stainless steel float switch, liquid level switch, side-mounted float switch)
  • Rated voltage: 220V AC/DC
  • Rated power: 50W (0.42A for 120V, 0.21A for 240V)
  • Maxmum pressure: 1 MPa (145.0 PSI)
  • Working temperature: -10 ~ 120ºC (14ºF ~ 248ºF)
  • Cable length: 13.8" or 350 mm. 
  • Switch mounting thread: M10. 
  • Maximum mounting thickness: 0.37" or 9.62 mm.

This product was added to our catalog on Monday 16 October, 2017.

Copyright © 2018 Contact