Robust float switch - ATS 165 EP, ACS certified


The ATS 165 EP is a robust float switch ACS certified constructed with special components for use in extremely agitated drinking water applications. Thanks to its big switching angle of 165º, this float ensures no jerking of the pump or electrical panels, and it is an ideal solution for level control in drinking water tower tanks. The ATS 165 EP is equipped with a stainless steel (AISI 316L) adjustable ballast, and it can be connected directly to pumps up to 1.5 HP or through a relay if working with high power pumps.


  • 165º switching angle that protects the pump's engine from jerking
  • 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)



  • Drinking water for human consumption 
  • Emptying / Filling function
  • Overflow or dry-running protection
  • High / low level alarm


Operation mode Omnidirectionnal
Allowed fluid density 0,70 à 1,10
Maximum pressure 3.5 bars
Allowed temperature 85°C
Protection index IP 68
Power supply  250 VAC/VDC - 50/60 Hz
Cut-out power 20 (8) A (20 A résistive – 8 A inductive)
Housing material

 Polypropylene special ACS certified 

Cable 3 cond. 1 mm² EPDM  special ACS certified
Weight without cable 325 g
Cable weight EPDM 105 g/m
Ballast 230 g stainless steel AISI 316 L
Standard cable lenght (serie)  5, 10,15 et 20 m


  • WATCH OUT ! A Sanitary Conformity Certificate is required in many countries for any device in contact with drinking water meant for human consumption. In France the ACS Certificate is mandatory since 2006. To know more about the ACS Certificate, please see our Drinking Water (ACS) section.
  • is highly recommended to use cable hangers with our float level switches.
  • For pump control of several levels with several pumps in drinking water, choose the SOBA EP, ACS certified.
  • If you prefer the “internal ballast system” even in your applications with drinking water meant for human consumption, please select the AQUA MEDIUM EP certified ACS float level switch with internal ballast.

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