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Allen-Bradley Hardware Product

Float Switches

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Our 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.

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840 Float
  • Overview
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  • Documentation
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Overview

  • Contact ratings NEMA A600 and N300
  • Operating sensitivity from 2…5 in. (50.8…127 mm)
  • 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

Typical applications for Bulletin 840 Float Switches include:

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

Product Selection

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Documentation

Resource Publication Number Language
Condition Sensing Brochure 836E-BR001
English
 
Looking for Technical Documentation?

Visit the Technical Documentation Center to find product specifications, installation guides, user manuals, product certifications and more.

View 840 Float and Level Sensors Technical Publications and Certifications

Certifications

CSA MarkCanadian Standards Association Mark
UL Listed CertificationUL Listed Certification
  • CE Marked for all applicable directives 
  • CSA Certified
  • UL Listed
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