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Explosion Proof Heater


Model # DX-233

Heavy duty industrial unit heaters featuring T3C ratings - the lowest ignition temperature rating in the industry!  The DX-233 Series heaters are offered in a wide range of power outputs, voltage ratings and available control systems for custom tailoring to your needs. Dual (automatic and manual reset) over-temperature protection incorporated with a 70 PSIG relief value setting for additional user safety.  A welded steel heat exchanger with painted steel heaters, steel tubes, and spiral wound aluminum fins for extra unit durability. Ideal for environments where there is a risk of vapour or dust combustion.

Baked on polyester powder-coated cabinet; epoxy covered motor; NEMA 7, 9 cast aluminum control circuit enclosure. Also available in 316 stainless steel or Heresite® construction. Contact factory for information.

Heating Element:
Welded steel heat exchanger with painted steel heaters, steel tubes and spiral wound aluminum fins

Heat Exchanger:
The advanced design allows lower operating temperatures from sealed liquid-to-air heat exchanger with steel tubes, and integral aluminum fins. The pressure relief device provides excel pressure protection.

Controls & Wiring:
24VAC transformer; contactor; with automatic and manual reset over temperature thermal cut-outs. Adjustable covers.

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More Information


Volts 208(1&3Ph), 240(1&3Ph), 480(3Ph), 600V(3Ph); 60Hz
Wattage 3 - 30kW.
Warranty One year from date of installation
  • cCSAus
  • Almond
Available in North America
Construction Heavy 14 gauge steel cabinet; aluminum fan blade
  • Coal Handling Areas
  • Paint Rooms
  • Utility Plants
  • Aircraft Hangers
  • Gasoline Fueling / Storage Areas
Installation Easy access to motor and fan; motors are prewired to control enclosure

Key Features and Benefits

  • T3C ratings

    Lowest ignition temperature code rating in the industry: T3C, 160°C/320°F

  • Dual over-temperature protection

    Automatic and manual reset cutout for additional safety

  • Nontoxic Heat Transfer Fluid

    Allows lower operating temperatures

  • Low 70 PSIG relief valve setting

    Assures initial escaping vapor temperature remains below 160°C/320°F ignition point

  • Modular design

    Built for use in dry non-corrosive areas