Jerguson® SAS-16™ Snap-Action Switch

Rugged, Reliable Magnetic Switch for High-Temperature and High-Vibration Process Applications

The SAS-16™ Snap-Action Switch from Jerguson® is a high-performance, externally mounted magnetic switch engineered for accurate level control in demanding industrial applications. Built with a unique tri-magnet snap-action design, the SAS-16 offers fail-safe switching without the need for springs or cams—making it a trusted choice across the energy, refining, petrochemical, and power generation industries.

Key Features:

  • Temperature Rating: Up to 750°F (399°C)
  • Mounting: External – no contact with process media
  • Switch Type: SPDT (Single-Pole Double-Throw)
  • Enclosure: Standard anodized aluminum; optional 316 stainless steel
  • Certifications:
    • FM Approved
    • IECEx & ATEX versions available for hazardous areas
  • Electrical Ratings:
    • 300 VAC, 10A, 2000 VA (maximum)
    • 240 VDC, 10A, 50W (maximum)
    • 240 VAC, 0.25A, 6 VA (maximum)
    • 240 VDC, 0.25A, 3.6W (maximum)

Available: Canada-wide


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Description

Why Choose the SAS-16™ Snap-Action Switch?

  • Tri-Magnet Magnetic Repulsion Design
    The SAS-16’s patented mechanism uses magnetic repulsion for precise snap-action switching. As the float rises or falls, the secondary magnet rotates, triggering a positive mechanical switch action that’s highly reliable in extreme conditions.
  • External Mounting = No Fluid Contact
    Designed to be mounted externally on a magnetic level indicator, the SAS-16 ensures zero contact with process fluids, enhancing safety, reducing maintenance, and extending lifespan.
  • Built for Harsh Environments
    Operating in temperatures up to 750°F, the SAS-16 is ideal for high-temperature or high-vibration process environments.
  • Fully Adjustable & Compact
    Its adjustable switch post allows for flexible setpoint configurations, while the compact form factor fits seamlessly on a variety of indicator chambers.

Applications

  • High-temperature process columns
  • Steam drum level indication
  • Level monitoring in refineries and chemical plants
  • Hazardous area switching
  • Magnetic level gage integration

Documents

CLARK RELIANCE_JMT_Brochure_Aug2024_Westech.pdf

Manufacturer Info

Clark-Reliance® Corporation is a global leader in the level indication and control, sightflow indication, filtration and separation industries. The company’s well-known brands constitute the broadest line of level instrumentation for boilers and other equipment found in utilities, refineries, chemical processing and other industries. Website: https://www.clarkreliance.com/