Lightning Controller MCD 50-B & MCD 125-B/NPE


Product Name：Lightning Controller MCD 50-B & MCD 125-B/NPE
Product Model：MCD 50-B,MCD 125-B/NPE
Updated：2010.04.15
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Coordinated Lightning Controller type MCD 50-B & MCD 125-B/NPE


The Type MCD 50-B Coordinated LightningController is a coordinated lightning arrester, Type 1 (Class B) to DIN EN 61643-11, designed to deflect high pulsed currents (10/350). It is used in lightning protection zones (LPZ) 0 to 1 at building entrances, where it provides for lightning protection potential equalisation with the energy supply lines.

Due to the low-level protection (<1.3 kV), there are no additional decoupling elements between the Coordinated Lightning Controller and the downstream surge arresters.

The Type MCD 125-B/NPE total discharge gap is used in TN-S and TT network systems between N and PE. It prevents voltage drag on the conductor, thereby preventing impermissible, high contact voltages at potential equalisation.

The Coordinated LightningController is preferred for use in compact surge arrester concepts in a housing, as well as combined lightning and overvoltage protector installations in a distribution.

Combination arrester / coordinated lightning controller
Type Max. continuousoperating voltageV Version Pack.pcs Weightkg/% pc Item No.
MCD 50-B 255 1 pole 1 34,400 5096 84 9

Type Max. continuousoperating voltageV Version Pack.pcs Weightkg/% pc Item No.
MCD 125-B/NPE 255 NPE 1 46,500 5096 86 5

LightningController 1-pole for use in TN- and TT-systems.

MCD 50-B: Coordinated lightning arrester Type 1 (Class B) to DIN EN 61643-11 for interface 0 to 2 (LPZ) according to lightning protection zone concept to IEC 61312-1 and/or DIN VDE 0185-305.

·Protection capability 50 kA 10/350 μs per pole
·Conforms to VDN Directive, 2nd Edition 2004
·Protection level < 1.3 kV
·Line follow current quenching capacity 25 kA Ipeak
·Including plug caps for identifying the connections
·Enclosed, non-extinguishing discharge gap
·Can be used in normal commercial distributor housings

Application example: compact overvoltage protection concepts in a separate housing. Installation of arresters of requirement Class B+C in a distributor without decoupling inductivity and/or line lengths, e.g. direct on mobile radio system technology.


Arrester for use in TN-S and TT systems.

MCD 125-B/NPE: as coordinated N-PE discharge gap, Type 1 (Class B) IEC 61643. For interface 0 to 1 (LPZ) according to lightning protection zone concept to IEC 61312-1 and/or DIN VDE 0185-305 for use as discharge gap between N and PE.

·Protection capability 125 kA 10/350 μs
·Conforms to VDN Directive, 2nd Edition 2004
·Including plug caps for identifying the connections
·Protection level < 1.3 kV
·Enclosed, non-extinguishing discharge gap: can be used in normal commercial distributor housings
Application example: compact overvoltage protection concepts in a separate housing. Installation of arresters of requirement Class B+C in a distributor without decoupling inductivity and/or linelengths, e.g. direct on mobile radio system.

5096 84 9
Nominal voltage UN V 230
Requirement class to EN 61643-11 Type 1
Requirement class to IEC 61643-1 class I
LPZ 0→2
Pulsed current (10/350) Iimp kA 50
Voltage protection level Up kV <1,3
Response time tA ns <100
Follow current quenching capacity Ipeak Ifi peak kA 25
Short-circuit resistance Ipeak kA 25
Maximum back-up fuse A 500
Temperature range   °C -40 - +85
Protection rating IP 20
Division unit TE (17.5 mm) 2
Connection cross-section, rigid mm2 10 - 50
Connection cross-section, multi-wire mm2 10 - 35
Connection cross-section, flexible mm2 10 - 25

5096 86 5
Nominal voltage UN V 230
Maximum continuous operating voltage UC V 255
Requirement class to EN 61643-11 Type 1
Requirement class to IEC 61643-1 class I
LPZ 0→2
Pulsed current (10/350) Iimp kA 125
Voltage protection level Up kV <1,3
Response time tA ns <100
Follow current quenching capacity Ipeak Ifi peak kA 0,1
Temperature range . °C -40 - +85
Protection rating IP 20
Division unit TE (17.5 mm) 2
Connection cross-section, rigid mm2 10 - 50
Connection cross-section, multi-wire mm2 10 - 35
Connection cross-section, flexible mm2 10 - 25