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Freezstop Micro (FSM)

Products > Self-Regulating Heaters > Freezstop Micro (FSM)

Product Features

    ATEX - European Hazardous Area Approval FM - North American Hazardous Area approval CSA - Canadian Hazardous Area Approval

Freezstop Micro is an industrial grade self-regulating heating tape that can be used for freeze protection or temperature maintenance of pipework and vessels. It is particularly suited to small diameter pipes and instrument tubing such as impulse or analyser lines.  It can be cut-to-length at site to match exact piping lengths without any complicated design considerations. 

Freezstop Micro is approved for use in non-hazardous, and hazardous areas to world wide standards. Its self-regulating characteristics improve safety and reliability.

Freezstop Micro will not overheat or burnout, even when overlapped upon itself. Its power output self-regulates in response to the pipe temperature.

Freezstop Micro is available with a corrosion resistant thermoplastic outer jacket (FSM-CT) and when greater corrosion resistance is required a fluoropolymer outer jacket (FSM-CF). 

The installation of Freezstop Micro is quick and simple and requires no special skills or tools. Termination, splicing and power connection components are all provided in convenient kits. See Product, Application and Documentation Links below.

  Click to see larger image
  Thermoplastic Outer Jacket
  Click to see larger image
  Fluoropolymer Outer Jacket
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Product Specification

Maximum Withstand Temperature 85°C (185°F)


Freezstop Micro is available in 11 and 17 W/m outputs as illustrated on the graph to the right.  The graph shows the nominal power output at 230V when installed on insulated metal pipes.  Click on the graph to see a larger version.

  Maximum Continuous Exposure
Temperature (Power ON)
65°C (149°F)

Maximum Permissible Exposure
Temperature (Power OFF)

85°C (185°F)

Minimum Operating Temperature

-65ºC (-85ºF)

  Temperature Classification T6 (85°C/185°F)
  Power Supply 220 - 277 VAC
  Cable Dimensions

FSM-CT  10.5 x 5.9mm +/- 0.5

FSM-CF  10.2 x 5.6mm +/-0.5

IP Rating 


  Click on the graph to see a larger version.
Nominal power output  against pipe temperature


  Minimum Installation Temperature -40°C (-40°F)
  Minimum Bending Radius FSM-CT - 35mm
FSM-CF - 35mm
  Weight kg/100m FSM-CT - 10.2 kg
FSM -CF - 10.0 kg
  Maximum Resistance of Protective Braiding 18.2 Ohm/km
  Cable Gland Thread Size M20


Maximum Circuit Length (m)  for various circuit breaker sizes
Termperature (°C)
10A 16A 20A      
  11FSM 5   76   126   128                  
    0   70   118   128                  
    -20   40   78   124   128              
    -40   36   60   96   120              
  17FSM 5   54   88   102                  
    0   50   84   102                  
    -20   34   56   88   102              
    -40   26   42   68   86              
For use with Type C circuit breakers to IEC 60898


Approvals and Certification
FSM 19ATEX3381
Cables, DESTU 1547590
Cables, DESTU & SF 1295278
FSM CML 19.0124
Self Reg Cable MЮ62 B 06041
Product and Application Datasheets

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