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Supco SHL512 Plenum Limit Switch Thermostat 170-150°F Range

Manufacturer

Picture for manufacturer Supco

Part Number

SHL512
5 reviews
Sale Price

$29.62

3 left at this price

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Product Details

The Supco SHL512 is a plenum limit switch thermostat designed to protect HVAC systems from overheating by monitoring air temperature in the plenum chamber. This automatic safety control opens on temperature rise and closes on temperature drop, providing reliable thermal protection for residential and commercial heating systems.

Key Features:

  • Temperature range: 170°F opening, 150°F closing (L170-20F)
  • Automatic reset functionality for continuous operation
  • Mounts directly in the supply plenum for accurate temperature sensing
  • SPST snap-action switch for reliable contact operation
  • Compatible with gas and oil furnaces as well as heat pumps

This limit switch is a critical safety component that prevents heat exchanger damage and potential system failure by shutting down the blower when plenum temperatures exceed safe operating levels. The 20°F differential ensures proper system cycling without excessive short cycling.

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