FX5 - Explosion-Proof Electric Air Unit Heater Explosion-Proof Unit Heater

The Ruffneck™ FX5 Explosion-Proof Electric Air Unit Heater is designed for the harshest industrial environments and intended for dry indoor industrial applications such as oil refineries, petrochemical plants, pulp and paper mills, grain elevators, hazardous waste storage facilities, wastewater treatment plants. This heater is ideal anywhere that specific explosive gases or dusts may be present.


  • Certified for use in hazardous location areas
  • Numerous factory installed options available
  • Dual temperature high-limits for overheat protection
  • Designed for the harshest industrial hazardous location environments


models range from 3-35kW and 208-600V
heater core assembly is contained in a sturdy, epoxy-coated, 12-gauge steel cabinet (optional Heresite® coating and stainless steel construction for corrosive environments available), which also houses the motor and fan assembly
adjustable louvres allow directional control of airflow
narrow gap, two-piece fan guard provides safety against all moving parts
automatic reset bimetal high-limit; secondary ambient high-limit for added safety
UL-certified and approved for the following Hazardous Locations Classifications: Class I, Divisions 1 & 2, Groups C & D; Class II, Division 1, Groups E, F & G and Class II, Division 2, Groups F & G. Class I, Zones 1 & 2, Groups IIA & IIB; Temperature code T3B 165°C (329°F)