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Combination arrestor, Type 1, according to DIN EN 61643-11(B
according to VDE 0675 Part 6).
Completely pre-terminated and ready for connection, consisting of:
MCD 50-B: Coordinated lightning current arrestor, Type 1 (Class B)
to EN 61643-11 and MCD 125-B/NPE: Coordinated N-PE spark gap,
Type 1 (Class B) to EN 61643-11 for use in TN-S and TT systems.
Interface 0 to 1 according to lightning protection zone concept
according to IEC 61312-1 and VDE 0185-305 (IEC62305).
• Arresting capacity 50 kA 10/350 µs per pole (L-N)
• Arresting capacity 125 kA (10/350 µs) per pole (N-PE)
• Suitable for any TN or TT system
• Conforms to VDN Directive 2nd Edition 2004
• Protection level • Line follow current quenching 25 kA Ipeak
• lncl. plug caps for identifying the connections
• Encapsulated, non-extinguishing spark gap
Application: Lightning protection equipotential bonding in buildings
with external lightning protection of Class I to IV and in standard
distributor housings.
Type: MCD 50-B 3+1
Maximum continuous voltage V: 255
Version: 3 + NPE
Pack Units: 1
Weight kg/100 pc.: 168.000
Art.-No.: 5096879
Article number 5096879
Nominal voltage UN V 230
SPD to EN 61643-11 Type 1
SPD to IEC 61643-1 class I
LPZ 0→2
Lightning impulse current (10/350) I
imp kA 50
Lightning impulse current (10/350) [total] kA 125
Nominal discharge surge current (8/20) InkA 50
Arrester surge current (8/20) [total] kA 125
Voltage protection level Up kV 1,3
Response time tA ns <100
Follow current quenching capacity Ipeak Ifi peak kA 25
Maximum back-up fuse A 500
Temperature range ϑ °C -40
Division unit TE (17.5 mm) 8
Protection rating IP 20
Connection cross-section, rigid mm² 10
Connection cross-section, multi-wire mm² 10
Connection cross-section, flexible mm² 10
2 OBO | www.obo.de
Combination arrestor, 3-pole + NPE | Stand 05/2012Legend
230/400 V-system
Protection device to DIN EN 61643-11 or IEC 61643-11
Transition from LPZ 0 to LPZ 2
Communautés Européennes, EC declaration of conformity according to EC directives
Russia, GOST The State Committee for Standards
