Article number: 24 536
  • Surge arresters type T2+T3 ensure the equipotential bonding and reduce switching, induced and residual overvoltage in LV power supply systems.
  • 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.
  • Installed at the boundaries of LPZ 1 – LPZ 3 into subsidiary switchboards and control panels.
  • If the product contains two PE (or PEN) terminals, it must not be used as a PE (PEN) bridge.
  • M indication specifies a type of construction with removable module.
  • S indication specifies a version with remote monitoring.
Test class according to EN 61643-11:2012 (IEC 61643-11:2011) T2, T3
System TN-C
Number of poles
Rated operating AC voltage UN 120 V
Maximum continuous operating voltage AC UC 150 V
Maximum discharge current (8/20) Imax 40 kA
Nominal discharge current for class II test (8/20) In 15 kA
Open circuit voltage of the combination wave generator UOC 6 kV
Total discharge current (8/20) L1+L2+L3->PEN ITotal 120 kA
Voltage protection level at In Up < 0.65 kV
Voltage protection level at UOC Up < 0.5 kV
Temporary overvoltage test (TOV) for tT = 5 s UT 182 V
Temporary overvoltage test (TOV) for tT = 120 min UT 230 V
Response time tA < 25 ns
Maximal back-up fuse 160 A gL/gG
Residual current IPE ≤ 400 µA
Short-circuit current rating at maximum back-up fuse ISCCR 60 kArms
Lightning protection zone LPZ 1-2, LPZ 2-3, LPZ3
Housing material Polyamid PA6, UL94 V-0
Degree of protection IP20
Operating temperature ϑ - 40 ÷ 70 °C
Humidity range RH 5 ÷ 95 %
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 3
Operating position Any
Product placement environment Internal
Signalling at the device Optic
Importance of local signaling OK – clear target
FAULT – red target
Remote signalling No
Modular design No
Lifetime > 100 000 h
Quick contact
Ing. Aneta Sčebelová
 +420 494 942 314