Self-Regulating Low Temperature

Self-Regulating Low Temperature
  • Self-Regulating, Energy Efficient
  • 16 AWG Buss Wire
  • Circuit Lengths to 660 Feet
  • Process Temperature Maintenance to 150°F (65°C)
  • Maximum Continuous Exposure Temperature, Power Off, 185°F (85°C)
  • Industrial Freeze Protection Applications
  • Single or Dual Monitor Wires Available
  • Field Splicing Without Disrupting Heat Output
  • 3, 5, 8 and 10 W/Ft.
  • 120 and 208 - 277 Volt From Stock
  • Approximate Size .47 in. W x .20 in.H
  • Min. Bend Radius 1-1/8 in.
  • For Use on Metal and Plastic Pipes
  • Factory Mutual (FM) Approved, UL Listed, and CSA certified for ordinary areas.
  • ATEX, IECEx, FM, and CSA Approved for hazardous (classified) areas when used with U Series, HL, DL, and EL accessories.
  • Literature
    SRL Catalog Page
    DL Accessories Catalog Page
    U Series Accessories Catalog Page

Chromalox SRL self-regulating heating cable provides safe, reliable heat tracing for freeze protection of pipes, valves, tanks and similar applications. Constructed of industrial grade 16 AWG buss wire with a tinned copper braid and optional overjacketing, SRL ensures operating integrity in Div. 2 hazardous environments as well as certain corrosive industrial environments. SRL heating cable has a maximum maintenance temperature rating of 150°F (65°C).

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.


  • Energy efficient, self-regulating SRL uses less energy when less heat is required.
  • Easy to install, SRL can be cut to any length (up to max. circuit length) in the field.
  • Field splices can be performed easily in minutes with no scrap or wasted cold sections.
  • SRL features lower installed cost than steam tracing, less maintenance expense and less downtime.
  • SRL can be single overlapped without burnout, which simplifies heat tracing of in-line process equipment such as valves, elbows and pumps.
  • Because SRL is self-regulating, over-temperature conditions are minimized.
  • Chromalox termination, splice, tee and end seal kits reduce installation time.

  • Freeze Protection
  • Process Maintenance, Low Temperature

SRL Selection Guide

Features of SRL Cable

Max. Maintenance Temp. (°F) 150
Max. Exposure Temp. (°F) Power Off 185
Max. W/Ft. 10
Max. Circuit Length (Ft.) 95 - 660
Buss Wire Size 16
Voltages 120, 208-277
Hazardous Ratings Yes
Usable on Plastic Pipe Yes
Cut-to-Length in Field Yes
Field Splicable Yes
Can be Overlapped Yes
Output Varies with Temp. Yes
Varies Output Along Length Yes
Accessories DL/EL/U
Monitor Wire Available Yes


SRL Corrosion Selection Guide

Moisture C, CR, CT
Aqueous Solutions of Inorganic Compounds CR, 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
CR- TPR overjacket over braid for protection against certain inorganic chemical solutions

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.

Select Parameters
Output (W/Ft.)
Clear Parameters
Select a Part
Part # Description  
382731 SRL 3-1CR 3W/FT 120V Buy Now
382740 SRL 3-2CR 3W/FT 240V Buy Now
383400 SRL 3-1CT 3W/FT 120V Buy Now
383419 SRL 3-2CT 3W/FT 240V Buy Now
382758 SRL 5-1CR 5W/FT 120V Buy Now
382766 SRL 5-2CR 5W/FT 240V Buy Now
383443 SRL 5-1CT 5W/FT 120V Buy Now
383451 SRL 5-2CT 5W/FT 240V Buy Now
382598 SRL 8-1CR 8W/FT 120V Buy Now
382600 SRL 8-2CR 8W/FT 240V Buy Now
383460 SRL 8-1CT 8W/FT 120V Buy Now
383478 SRL 8-2CT 8W/FT 240V Buy Now
382846 SRL 10-1CR 10W/FT 120V Buy Now
382854 SRL 10-2CR 10W/FT 240V Buy Now
383486 SRL 10-1CT 10W/FT 120V Buy Now
383494 SRL 10-2CT 10W/FT 240V Buy Now
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