Constant Wattage Medium Temperature

Constant Wattage Medium Temperature
  • Uniform Thermal Output, Low Energy Cost
  • No Inrush at Any Ambient
  • Industrial/Process and Commercial/Construction Applications
  • Maximum Exposure Temperature, Power Off, 392°F (200°C)
  • Steam Cleanable on Process Equipment Up to 190 PSIG (Power Off)
  • 4, 8 and 12 W/Ft.
  • 120, 208 - 277 and 480 Volt From Stock
  • Approximate Size .30 in. W x .25 in. H
  • Minimum Bend Radius 1-1/4 in.
  • For Use on Metallic Pipes
  • Consult Factory for Use on Plastic Pipes
  • Approvals (Depends on specific model)
    UL Listed for ordinary areas.
    CSA Certified for ordinary and:
    • Class I, Div. 2, Groups A, B, C, D
    • Class II, Div. 2, Groups F, G. Rated T3 Temperature Class2 (Exception: Cable surface temperature shall not exceed 190°C in Class II, Div. 2, Group F; 165°C in Class II, Div. 2, Group G.).

Chromalox CWM constant wattage heating cable is a proven, reliable solution for industrial process temperature maintenance and freeze protection. CWM features a parallel heating core that produces uniform thermal output over its entire length. Using a single power point, you can easily configure and install a heat tracing system as short as several feet or as long as 780 feet right in the field. With 392°F (200°C) fluoropolymer electrical insulation over-jacketing, CWM has outstanding electrical and thermal properties, and is well suited for most chemically hostile environments.

WARNING — A ground fault protection device is required by NEC to minimize the danger of fire if the heating cable is damaged or improperly installed. A minimum trip level of 30mA is recommended to minimize nuisance tripping.

  • Durable, non-aging fluoropolymer jacket ensures long service life and can be used in some hostile environments.
  • Flexible, easy to install on most equipment and delivers long-term reliable performance.
  • Eliminates the need for oversized wiring or switchgear.
  • Accurate temperature, reliable electric heat that can be consistently controlled and easily monitored.
  • Safe and rugged.
  • Parallel circuitry allows cut-to-length.
  • High performance, rated to withstand up to 392°F saturated steam (190 psig) temperature (power off).
  • Low profile, uses standard size thermal insulation on piping and process equipment.

  • Freeze Protection
  • Freeze Protection, High Exposure Temperature
  • Process Maintenance, Low Temperature
  • Process Maintenance, High Temperature

CWM Selection Guide

CWM Heat Trace Cable Features
   Max. Maintenance Temp. (°F)    320
   Max. Exposure Temp. (°F) Power Off    400
   Max. W/Ft.    12
   Max. Circuit Length (Ft.)    225 - 900
   Buss Wire Size    12
   Voltages    120, 208-277, 480
   Hazardous Ratings    Yes
   Usable on Plastic Pipe    No
   Cut-to-Length in Field    Yes
   Field Splicable    Yes
   Can be Overlapped    No
   Output Varies with Temp.    No
  Varies Output Along Length    No
   Accessories    DL/EL/U
   Monitor Wire Available    Contact Factory


CWM Corrosion Selection Guide

   Moisture    C, CT
   Aqueous Solutions of Inorganic Compounds    CT
   Liquids Organic Chemicals Acids or Bases    CT
  Acids or Bases    CT

C - Tin-Plated copper metallic braid for additional protection and ground path
CT - Fluoropolymer corrosion resistant overjacket over braid for hostile/corrosive environments

This is a recommendation guide. Chromalox cannot warrant any Electric Heat Trace against failure by sheath degradation if such failure is the result of operating conditions beyond the control of the heater manufacturer. It is the responsibility of the purchaser to make the ultimate choice of sheath material based on knowledge of the chemical composition of the corrosive solution, character of materials entering the solution, and controls which maintains the process.

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Part # Description  
392075 CWM 4-1CT 4W/FT 120V Buy Now
392083 CWM 4-2CT 4W/FT 240V Buy Now
392163 CWM 8-1CT 8W/FT 120V Buy Now
392171 CWM 8-2CT 8W/FT 240V Buy Now
392251 CWM 12-1CT 12W/FT 120V Buy Now
392260 CWM 12-2CT 12W/FT 240V Buy Now
392278 CWM-12-4CT 12W/FT 480V Buy Now
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