HLSA12,5-440/4+0 S

Article number: 10 344
  • Lightning impulse current and surge arresters type T1+T2 ensure the equipotential bonding, eliminate the effects of lightning current and reduce switching, induced and residual overvoltage in single-phase and three-phase power supply systems.
  • Suitable for objects with considerable levels of protection LPL III and LPL IV, such as small administration complexes, residential buildings, family houses or properties and halls without the incidence of persons and indoor equipment.
  • Installed at the boundaries of LPZ 0 – LPZ 1 and higher zones, closest to where overhead line enters the building i.e. in the main distribution boards.
  • The products consist of varistors with big discharge ability.
  • Configurations 1+1 and 3+1 are additionally combined with a gas discharge tube which ensures zero leakage current through the PE conductor.
  • If the product contains two PE (or PEN) terminals, it must not be used as a PE (PEN) bridge.
  • S indication specifies a version with remote monitoring.
Impulse discharge current for class I test (10/350) Iimp 12.5 kA
Test class according to EN 61643-11:2012 (IEC 61643-11:2011) T1, T2
System TN-S
Number of poles
Rated operating AC voltage UN 400 V
Maximum continuous operating voltage AC UC 440 V
Maximum discharge current (8/20) Imax 50 kA
Charge Q 6.25 As
Specific energy for class I test W/R 39 kJ/Ω
Total discharge current (10/350) L1+L2+L3+N->PE ITotal 50 kA
Total discharge current (8/20) L1+L2+L3+N->PE ITotal 200 kA
Nominal discharge current for class II test (8/20) In 20 kA
Open circuit voltage of the combination wave generator UOC 6 kV
Voltage protection level at In Up < 1.8 kV
Temporary overvoltage test (TOV) for tT = 5 s UT 580 V
Response time tA < 25 ns
Maximal back-up fuse 160 A gL/gG
Short-circuit current rating at maximum back-up fuse ISCCR 60 kArms
Lightning protection zone LPZ 0-1, LPZ 1-2, LPZ 2-3
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 60364-5-53:2022 (doesn't apply to „V“ connection) for T1 S 6 mm² (L, N)
16 mm² (PE, PEN)
Minimum cross-section of connected Cu conductors accord. to HD 60364-5-53:2022 (doesn't apply to „V“ connection) for T2 S 2.5 mm² (L, N)
6 mm² (PE, PEN)
Clamp fastening range (solid conductor) 1.5 ÷ 25 mm2
Clamp fastening range (stranded conductor) 1.5 ÷ 16 mm2
Tightening moment 3
Installation On DIN rail 35 mm
Modular width 8
Operating position Any
Signalling at the device Optic
Importance of local signaling OK – clear target
FAULT – red target
Remote signalling Yes
Potential free signal contact (S) (recommended cross-section of remote monitoring max. 1 mm2) AC: 250 V / 1.5 A, DC: 250 V / 0.1 A
Modular design No
Lifetime > 100 000 h
Quick contact
Ing. Aneta Sčebelová
 +420 494 942 314