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Float Switches

Bulletin 840 Float Switches

Bulletin 840 Float Switches are heavy-duty industrial control devices. They open and close contacts in response to changes in liquid level. These switches are available in five different styles with both motor and pilot duty contact ratings.

Features

  • Contact ratings NEMA A600 and N300
  • Operating sensitivity from 2...5 in.
  • Most models can be converted between tank and sump operation
  • Eleven standard float switch operator assemblies available
  • Rods, floats and cables are stainless steel
  • Available in Type 1, 4 and 7/9 enclosures

Products

  • 840 Float Switches

Certifications

  • UL, CSA, CE Marked

Certifications apply when product is marked. See our Product Certification site for Declarations of Conformity, certificates and other certification details.

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Certifications

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Accessories

We offer a variety of accessories for your Float Switches, including:

Applications

  • Storage tanks
  • Water treatment plants
  • Water/waste water treatment plants

Customer Success

  • Condition Sensing Case Studies — View our case studies site to discover how customers have applied Allen-Bradley condition sensing products in their applications.