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Explosion-proof Unit Heater

A safe way to heat


Stelpro's X-Pro series explosion-proof unit heater is the ideal solution for areas where a risk of explosion or fire exists. Available with a wide variety of features and options, this explosion-proof unit heater ensures safety and efficiency in all conditions.

Product images

  • EU | ANGLE
  • EU | FACE


  • Lowest ignition temperature in the industry: T3C, 160 °C
  • Non-toxic propylene glycol heat transfer fluid
  • Pressure relief valve limits pressure to 70 PSIG
  • Stainless steel option: corrosion resistant
  • NEMA-7 or NEMA-9 junction boxes


  • Beige


  • Powdercoat


  • Robust, 14-gauge galvanized steel cabinet
  • Adjustable louvers (with minimum opening safety stops)
  • Thermal protection with automatic reset
  • Thermal protection with manual reset


  • Explosion-proof double-shielded permanently lubricated ball bearing motor (with automatic reset)
  • Aluminum fan blade


  • Elements immersed in non toxic, inhibited, propylene glycol heat transfer fluid
  • Low 70 PSIG pressure relief valve


  • Factory mounted
  • Housed in a NEMA 7 or 9 cast aluminum enclosure
  • Automatic and manual reset overtemperature cutouts, controlling magnetic contactor and 24 V control circuit transformer included with standard built-in controls


  • Wall, ceiling or pole installation using mounting brackets (not included but mandatory; see the accessories table)
  • Approved installation locations:
    − Class I, Divisions 1 and 2, Groups C and D
    − Class II, Divisions 1 and 2, Groups E (optional), F and G
    − Class I, Zones 1 and 2, Group IIB
    − Temperature code T3C, 160 °C (320 °F)


  • One year