SOBA HR HY double warerproof float switch


The SOBA HR HY is a heavy duty float level switch designed for aggressive liquids. This float is encased in a HR HY (High Resistance) press-vulcanised housing, which ensures a double waterproof. As the liquid level reaches the float, the mechanical switch inside will tilt, thus closing or opening a circuit connected to an electrical panel. The SOBA HR HY is equipped with an external adjustable resin ballast, and its +/-25º switching angle ensures a precise level measurement


  • Double waterproof thanks to its HR HY (High Resistance) housing
  • No maintenance needed, thanks to its biconical shape that avoids any clogging
  • Easy to install, easy to use
  • Ecological float switch (no mercury, no lead)



  • Aggressive liquids : acids, solvents, corrosive liquids, hydrocarbons, sea water, etc...
  • Level control of multiple pumps
  • Emptying / Filling function
  • Overflow or dry-running protection
  • High / low level alarm
 SOBA HR HY technical data sheet  (PDF 453Ko)
 SOBA HR HY wiring diagram  (PDF 1174Ko)

Operation mode Omnidirectional
Allowed fluid density 0,80 - 1,10
Maximum pressure 4 bars
Allowed temperature 90°C
Protection index IP 68
Power supply 12, 24, 48  VAC/VDC and 250 VAC  50/60 Hz
Cut-out power 16 (6) A (16 A résistive – 6 A inductive)
Housing material Copolymer polypropylene + HR HY vulcanized
Cable 3 cond. 1 mm² HR HY
Weight without cable 295 g
Cable weight HR HY 110 g/m
Ballast Loaded resin 250 g
Standard cable lenght (serie) 5, 6, 10,13, 15, 20, 25 et 30 m


  • It is highly recommended to use cable hangers with our float level switches.
  • The SOBA EX float switch is not suitable for agitated liquids. Choose our AT 120 HR HY float level switch.
  • If your installation is located in a hazardous area, choose our ATEX certified float switch SOBA EX.
Tilt level switches
2, avenue des Bosquets
Z.A. de l'Observatoire
78180 Montigny le Bretonneux
telephone+33 (0)1 61 37 35 60
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