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Hazardous-Area Drum Heaters

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These heaters are suitable for various classes of hazardous environments. They are not rated explosion-proof (Ex) – nor are any high-powered drum heaters, as too much current is required for this rating to be met – but they do have a NEMA-7-rated junction box and a high-limit shutoff with a choice of setpoints. See the description below for more details.

If you are unsure which hazardous area drum heater is right for your application, please send us an e-mail, fill out one of our contact forms, or talk to one of our engineers at (866) 685-4443 to get started.


  • Exclusive hazardous-area approval (FM approved Class I, division 2 Groups A, B, C, and D, Class II Division 2, Groups F and G)
  • Dual set-point NEMA 7-temperature controller connected to a high temperature limit indicator light
  • Exceptional 8" coverage area
  • Moisture- and chemical-resistant
  • Patented grounded heating element meets NEC427.23


  • 8-inch-wide band
  • High-limit thermostat designed to keep heater below NEC article 500 T-rating
  • Power density: 2.5 W/in²
  • Heating element is laminated between 2 layers of 23-mil and two layers of 25-mil fiberglass-reinforced silicone rubber
  • Nominal silicone rubber density of 26 oz/yd² per layer
  • Attached adjustable dual set-point NEMA 7-temperature controller with 6-foot power cord. One set-point is set at a high temperature limit and connected to a red indicator light.
  • Blanket leads 6 feet long for NEMA 7 controller; 1 foot without controller
  • Leads from blanket to controller are enclosed in a liquid tight conduit
  • 392°F maximum exposure temperature on heating surface
  • Designed for use on metal drums

Support documents

Hazardous Area Drum Heater Specification Sheet