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Nelson™ Heat Trace TH4X325 Thermostat
Nelson™ Heat Trace™ TH4X325 Thermostat
Nelson™ Heat Trace TH4X325 thermostat is used for controlling heat tracing systems in ordinary locations.
This thermostat is housed in aa aluminum enclosure. The switch has 22 Amp/480 Volt single pole double throw (SPDT) leads.
Nelson™ Heat Trace TH4X325 Thermostat


Certifications and Compliances
UL Listed, CSA Certified: Ordinary (Unclassified) Locations
NEMA Type 4X; IP66
Die cast aluminum
Temperature Range
-4 °C to +163 °C (+25 °F to +325 °F)
-40 °C to +215 °C (-40 °F to +420 °F)
Capillary Length
3 m (10 ft)
Capillary Material
316L Stainless Steel
UL and CSA Rating
22 Amp Resistance @ 480 Vac (100-480Vac)
Switch Type
Single Pole Double Throw (SPDT)


  • Thermostat is designed for use with Nelson™ LT, HLT, XLT, CLT and NC Series heater cables
  • Corrosive pipe sensing applications for freeze protection and process maintenance piping
  • Internal adjustment
  • NEMA 4X, IP66 epoxy coated metal enclosure
  • Ambient compensated