Liquid Level Control Relays




  • Liquid level control relays are designed to measure and control the 
levels of conductive liquids by means of resistive probes.
  • Rated supply voltage: 24…240V/ 380…415V
  • Measurement range: 250 Ω… 1000K Ω
  • Switching capacity: up to 2000 VA
  • Output contacts and rating: 1 CO 8 A and 2 CO 8 A
  • There are both Single or Multifunction available
  • Positive logic output to protect the system at power lose
  • Adjustable time delay to prevent nuisance tripping
  • DIN rail mount with 3 form factors: 17.5mm, 22.5mm and 35mm width
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Catalog Zelio Control Relays – Near Field Communication and conventional Control Relays English 01/2021 (Version 4.0)
RTC48… Zelio Temperature Control Soft, User Guide (Version 00)
RTC48… Temperature Controller, Quick Start Guide (Version 00)


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