Isolating Spark Gaps

For Lightning Equipotential Bonding

For lightning equipotential bonding according to IEC 62305 as well as for use in IT installations according to IEC 60364-5-54.
  • For indirect connection / earthing of functionally isolated parts of installations under lightning conditions
  • For lightning equipotential bonding according to IEC 62305
  • With corrosion-resistant stainless steel connections
  • For installation in buildings, outdoor locations and damp rooms as well as for underground installation
  • Extremely heavy-duty devices

Version

TFS: High-capacity isolating spark gap
KFSU: Isolating spark gap

Models

TFS / KFSU

TFS / KFSU

Basic circuit diagram TFS / KFSU
Dimension drawing TFS / KFSU

Isolating spark gaps with plastic sheath and two stainless steel connections (Rd 10 mm).

Specifications

Type
Part No.
Isolating spark gap according to EN 62561-3 / IEC 62561-3
Lightning impulse current (10/350 µs) (Iimp)
Class (lightning current carrying capability)
Rated power-frequency withstand voltage (50 / 60 Hz) (UwAC)
Rated impulse sparkover voltage (Ur imp)
Operating temperature range (TU)
Degree of protection protection
Length
Enclosure diameter
Enclosure material
Connection
Material (connection)
Extended technical data:
– Nominal discharge current (8/20 µs) (In)
– Power frequency sparkover voltage (50 / 60 Hz) (Uaw)
Weight
GTIN
PU
Part No.
  • TFS
  • 923 023
  • yes
  • 100 kA
  • H
  • 300 V
  • ≤ 4 kV
  • -20 °C ... +80 °C
  • IP 65
  • 160 mm
  • 43 mm
  • steel / plastic coating
  • Rd 10 mm
  • stainless steel (V2A)
  • --------------------
  • 100 kA
  • ≤ 2.5 kV
  • 185 g
  • 4013364074262
  • 1 pc(s)
  • 923 023
  • Specifications (PDF)
  • More
    • Further Pictures
      Basic circuit diagram TFS
      open PDF
      Dimension drawing TFS
      open PDF
      Further Information
      Product Specifications (Text)

      Back

      TFS isolating spark gap 
Heavy-duty isolating spark gap for lightning equipotential bonding according to EN 62305 and for use in information technology systems according to DIN VDE 0845 with corrosion-resistant stainless steel connections Rd 10 mm, for installation in buildings, outdoors, in damp rooms and underground.
      Lightning impulse current (10/350 µs): 100 kA
      Rated power-frequency withstand voltage (50 / 60 Hz): 300 V
      Operating temperature range: -20 °C ... +80 °C 
      Degree of protection protection: IP 65 
      Connection: Rd 10 mm 
      Material (connection): stainless steel (V2A) 

      delivery and installation.

      Brand: DEHN
      Type: TFS
      Part No.: 923 023

      or equivalent.
      Installation Instructions
      Certificates
      CE_Isolating_Spark_Gap_KFSU_TFS
      CAD-Data for registered Users
      923023.stp
      923023.igs
      923023.jt
      923023.dwg
      923023m_D.dxf
  • KFSU
  • 923 021
  • yes
  •  
  •  
  • 300 V
  • ≤ 4 kV
  • -20 °C ... +80 °C
  • IP 65
  • 160 mm
  • 43 mm
  • steel / plastic coating
  • Rd 10 mm
  • stainless steel (V2A)
  • --------------------
  • 100 kA
  • ≤ 2.5 kV
  • 185 g
  • 4013364036161
  • 1 pc(s)
  • 923 021
  • Specifications (PDF)
  • More
    • Further Pictures
      Basic circuit diagram KFSU
      open PDF
      Dimension drawing KFSU
      open PDF
      Further Information
      Product Specifications (Text)

      Back

      KFSU isolating spark gap
KFSU isolating spark gap
with plastic coating
For lightning equipotential bonding
according to IEC 62305-4 as well as for
use in IT systems according to DIN VDE 0845
Nominal discharge current (8/20): 100 kA
100% lightning impulse sparkover voltage: <= 4 kV
Power frequency sparkover voltage (50Hz): <= 2.5 kV
Degree of protection: 		IP 65
Connection: Rd 			10 mm 
      Rated power-frequency withstand voltage (50 / 60 Hz): 300 V
      Operating temperature range: -20 °C ... +80 °C 
      Degree of protection protection: IP 65 
      Connection: Rd 10 mm 
      Material (connection): stainless steel (V2A) 

      delivery and installation.

      Brand: DEHN
      Type: KFSU
      Part No.: 923 021

      or equivalent.
      Installation Instructions
      Certificates
      CE_Isolating_Spark_Gap_KFSU_TFS
      CAD-Data for registered Users
      923023.stp
      923023.igs
      923023.jt
      923023.dwg
      923023m_D.dxf