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HRC Explosionproof Thermostats

HRC thermostats from Eaton's Crouse-Hinds Division are used for heavy duty line voltage to control fan coils, fans, motor starters, valves, contactors and circulator motors in heating and/or cooling systems.

Applications include specific hazardous atmospheres such as oil refineries, chemical plants, paint and varnish manufacturing plants, certain hazardous metal finishing areas, coal processing locations, granaries and grain processing plants.

HRC Explosionproof Thermostats

Certifications and compliances


  • Class I, Divisions 1 & 2, Groups C, D
  • Class II, Division 1, Groups E, F, G
  • Class II, Division 2, Groups F, G
  • Class III

UL standard

  • UL1203
CSA standard
  • C22.2 No. 30
Environmental ratings
  • NEMA/EEMAC 7CD, 9EFG, 12

Design features

HRC thermostat with Honeywell control:

  • A heavy duty snap switch is mounted in the enclosure; the temperature sensitive element is mounted on the external surface of the cover and actuates the switch through a shaft and bearing mechanism
  • An external knob permits temperature setting within calibrated range; the knob is removable to prevent unauthorized adjustment; room ambient is indicated on thermometer at front

HRC bimetal thermostat:

  • Bimetal sensing element that is fast acting, reliable and unaffected by altitude
  • Compact, lightweight design makes it easy to install
  • No exposed copper or brass parts for excellent resistance to corrosion
  • Through feed design for easy installation
  • Durable all-aluminum exterior
  • Available for heating only or heating or cooling/ventilation applications

Standard materials

  • Feraloy iron alloy (HRC thermostat with Honeywell control); copper-free aluminum (HRC bimetal thermostat)
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