Article number: 10 910
  • Impulse current arresters type T1 ensure the equipotential bonding and eliminate the effects of lightning current in single-phase and three-phase power supply systems.
  • They are installed as a summing element between the N and PE conductors.
  • Intended for installation together with HLA50 product range in a configuration of 1+1 and 3+1.
  • Products contain non-exhausting spark gaps, thanks to which they are able to discharge the highest lightning impulse current.
  • Suitable for objects with considerable levels of protection LPL I and LPL II, such as big industrial complexes and properties of particular importance – hospitals, banks, power plants.
  • Installed as close as possible the overhead line enters the building i.e. the electric power substation, electrometer or the main distribution boards.
Test class according to EN 61643-11:2012 (IEC 61643-11:2011) T1
System TN-S, TT
Number of poles
Maximum continuous operating voltage AC UC 255 V
Impulse discharge current for class I test (10/350) Iimp 100 kA
Charge Q 50 As
Specific energy for class I test W/R 2 500 kJ/Ω
Nominal discharge current for class II test (8/20) In 100 kA
Voltage protection level at Iimp Up < 2 kV
Temporary overvoltage test (TOV) for tT = 0.2 s (N/PE) UT 1 200 V
Response time tA < 100 ns
Follow current interrupt rating Ifi 0.1 kArms
Lightning protection zone LPZ0, LPZ1
Housing material Polyamid PA6, UL94 V-0
Degree of protection IP20
Operating temperature ϑ - 40 ÷ 70 °C
Minimum cross-section of connected Cu conductors accord. to HD 60364-5-534:2016 (doesn't apply to „V“ connection) for T1 S 6 mm² (L, N)
16 mm² (PE, PEN)
Clamp fastening range (solid conductor) 2.5 ÷ 25 mm2
Clamp fastening range (stranded conductor) 2.5 ÷ 16 mm2
Tightening moment 4
Installation On DIN rail 35 mm
Modular width 2
Operating position Any
Signalling at the device None
Remote signalling No
Modular design No
Lifetime > 100 000 h
Quick contact
Ing. Aneta Sčebelová
 +420 494 942 314