Hazardous Location Heat Detector, Self-Restoring

Series 302 heat detectors are designed for use in normal environments as well as environments where the detectors are subject to weather, moisture (internal condensation), and explosive atmospheres. They are normally-open devices designed to close an electrical circuit upon activation. All models feature rate compensation and are available with either 135 °F (57.2 °C) or 194 °F (90 °C) ratings. They are self restoring, hermetically sealed, shock and corrosion resistant, and are tamperproof.

The sensor's aluminum tube acts as a heat collector when sources of heat radiate directly on the tube. Install these sensors out of direct sunlight and away from radiating heat sources including the direct flow from heaters and heat ducts.

Standard Features

  • Rate compensation offsets thermal lag
  • 1/2" threaded version available
  • Hermetically sealed
  • Self-restoring – no manual reset required
  • Explosion proof and weatherproof models available
  • Weatherproof models available that do not require a special backbox
  • Box mount and surface mount models available
  • Agency Listings: UL, FM, CSFM, MEA


Hazardous Location Heat Detector, Self-Restoring
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  • Item #: 302
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Price $42.00