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Approvals & Standards

  • EN 61643-21

Key features & benefits

STS TEL is the series of surge protection devices for telephone signal lines.These are protectors for a final step of very fine protection to be installed as close as possible to particularly sensitive equipment connected to these communications lines. Meets the IEC 61643-21 standard.

More specifications


  • Commercial and residential installations
  • Telecom & IT & Data Centers

Product Specifications

Degree of Protection (IP)


Wire Type

0.5 ... 2.5 mm²  

CE Conformity


REACH Compliant


Max Operating Temp.

60   °C

Min Operating Temp.

-20   °C

References in this series  (1)

83040610 - STS-TEL-ADSL





0.057   kg