B20M Vseries is the encapsulated gas discharge tube Type 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 1-2 (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 or 3+1. Thanks to the high insulation resistance at the release condition, the GDT will not cause the activation of RCD.
Note : For IT power supply networks use a special variant of gas dicharge tubes – find more in the catalogue’s annex for IT networks.
The marking M specifies a type of construction with removable module.
The marking of DS specifies a version with remote monitoring.
Internal wiring diagram
Dimension drawing
Installation diagram
PARAMETERS
| Test class according to EN 61643-11:2012 (IEC 61643-11) | TYP2, CLASS II | |
| Network type |
TN-S TT |
|
| Maximum continuous operating voltage | UC | 255 V AC |
| Impulse discharge current for class I test (10/350) | Iimp | 20 kA |
| Charge | Q | 10 As |
| Specific energy for class I test | W/R | 100 kJ/Ω |
| Nominal discharge current for class II test (8/20) | In | 20 kA |
| Voltage protection level at Iimp | 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 | 1-2 | |
| Housing material | Polyamid PA6, UL94 V-0 | |
| Degree of protection of enclosure | IP20 | |
| Operating temperature | ϑ | -40°C ... +80 °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 | |
| Failure signalisation (S) | green - ok / red - failure | |
| Potential free signal contact (DS) (recommended cross-section of remote monitoring max.1 mm2) | AC: 250 V / 0,5 A, DC: 250 V / 0,1 A | |
| Lifetime | min.100 000 h | |
| Weight | m | 76 g |
| Article number | 27 048 |
CERTIFICATIONS
DOWNLOADS
| Catalogue | |
| Installation instructions (1.13 MB) | |
| 2D model (517.54 KB) | for registered only |
| 3D model (654.4 KB) | for registered only |
| Certificates (84.81 KB) | for registered only |
| EC declaration of conformity (81.36 KB) | for registered only |