HGDT25 is the encapsulated gas discharge tube Type 1+2 according to EN 61643-11 and IEC 61643-11. These arresters are recommended for use in the Lightning Protection Zones Concept at the boundaries of LPZ 0-1 and higher (according to IEC 62305 and EN 62305), in the power supply lines, which are operated as TN-S and TT systems, where they provide the equipotential bonding between N and PE in the connections of 1+1. Thanks to the high insulation resistance at the release condition, the GDT will not cause the activation of RCD (residual current-operated protective device). The position of the applied HAKEL SPD may be horizontal, vertical, rotated 90 or 180 degrees, and this position does not affect the SPD’s function or the specified parameters.

Note: A special variant of gas discharge tubes is used for IT power supply systems.

Internal wiring diagram
Internal wiring diagram
Dimension drawing
Dimension drawing
Installation diagram
Installation diagram Počet fotek v galerii: 2
Test class according to EN 61643-11:2012 and IEC 61643-11:2011 TYPE 1+2, CLASS Il
Maximum continuous operating voltage UC 255 V AC
Impulse discharge current for class I test (10/350) Iimp 25 kA
Charge Q 12,5 As
Specific energy for class I test W/R 156 kJ/Ω
Nominal discharge current for class II test (8/20) In 30 kA
Voltage protection level Up < 1,3 kV
Temporary overvoltage (TOV) UT 1200 V/0,2 s
Response time tA < 100 ns
Follow current interrupt rating Ifi 100 Arms
LPZ 0-1 and higher
Housing material Polyamid PA6, UL94 V-0
Degree of protection of enclosure IP20
Operating temperature ϑ -40°C ... +70 °C
Cross-section of the connected conductors (at tightening moment of clamps 3 Nm) 25 mm2 (solid)
16 mm2 (wire)
Method of assembly DIN rail 35 mm
Lifetime min.100 000 h
Weight m 80 g
Article number 30 051
Installation instructions (1.42 MB)
2D model (359.14 KB) for registered only
3D model (382.91 KB) for registered only