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The FN4055 tension seat belt load cell sensor measures with excellent accuracy the forces exerted on the seat belt.
fn4055 tension seat belt load cell

Only the actual compression upon the seat belt is measured, as the sensor is insensitive to contact from the crash test dummy.  The FN4055 tension seat belt load cell is designed for very low range, like tests for kid’s security. It is protected against overload by mechanical stops. A similar sensor, EL20-S458, covers requests with higher ranges up to 25kN. With many years of experience as a designer and manufacturer of sensors, we often work with customers to design or customize sensors for specific uses and testing environments. On request, instruction documents can be provided to ease the selection and use of our sensors and provide helpful tips.


  • Protected against overload
  • Tension only
  • Usable without cutting the belt
  • For Static and Dynamic Applications
  • Ranges from 100 to 300 N (20 to 60 lbf) 
  • Compatible with most seat belts 
  • Machined with integrated mechanical stops 
  • Accuracy ±0.25%FS 
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  • Automotive crash test 
  • Kid seats tests 
  • Security belts controls 
  • Laboratory and Research
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Other Auto Safety Sensors



Please review product documents or contact us for the latest agency approval information.  

Product Type Features

  • Force Load Cell Sensor Type  Automotive Load Cells

Electrical Characteristics

  • Full Scale Range (Newton) 0 – 100, 0 – 250, 0 – 300, 2 – 250

  • Full Scale Range (lbf) 0 – 20, 0 – 50, 0 – 60

  • Force Load Cell Supply Voltage (VDC) 10

Signal Characteristics

  • Output Signal  2 mV/V

Usage Conditions

  • Operating Temperature Range  -20 – 80 °C [ -4 – 176 °F ]


  • Force Direction  Tension

  • Protection Index  IP50

  • Force Load Cell Accuracy (% of FS) ±.25

  • Zero Shift in CTR (%FS/°C) ±.5/50

  • Sensitivity Shift (%FS/°C) ±1.5/50

Reference Number

  • TE Internal Number CAT-FLS0032

Related Materials

Datasheets & Catalog Pages