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Type 2 device – surge arrestors

Type 2 device – surge arrestors

Parameter/TypeKM2-20-2+0 SCKM2-20-4+0 SCKM2-20-3+0 SC
Nominal voltage230V AC230V AC230V AC
Maximum operating voltage275V AC/350V DC275V AC/350V DC275V AC/350V DC
Nominal discharge current (8/20μs)20kA20kA20kA
Maximum discharge current (8/20μs)40kA40kA40kA
Voltage protection level at 5KA0.9kV0.9kV0.9kV
Voltage protection level1.35kV1.35kV1.35kV
Short-circuit current rating50kA50kA50kA
Maximum overcurrent protection160A gL/gG160A gL/gG160A gL/gG
Response time25ns25ns25ns
Cross-section of connected conductors solid1/35mm²1/35mm²1/35mm²
Cross-section of connected conductors stranded1/25mm²1/25mm²1/25mm²
Fault indicationRed indication field
Remote indicationPotential-free change-over contact
Remote indication contacts250V/0.5A AC, 250V/0.1A DC
Cross-section of remote indication conductors1.5mm²1.5mm²1.5mm²
Degree of protectionIP20IP20IP20
Range of operating temperatures-40°C - +80°C-40°C - +80°C-40°C - +80°C
MountingDIN rail 35mmDIN rail 35mmDIN rail 35mm
According to standardEN 61643-11:2012, IEC 61643-11:2011, T1, T2
Parameter/TypeKM2-20-1+1 SCKM2-20-3+1 SC
Nominal voltage230V AC230V AC
Maximum operating voltage L-N275V AC275V AC
Maximum operating voltage N-PE255V AC255V AC
Nominal discharge current (8/20μs) L-N20kA20kA
Nominal discharge current (8/20μs) N-PE20kA20kA
Maximum discharge current (8/20μs) L-N40kA40kA
Maximum discharge current (8/20μs) N-PE40kA40kA
Voltage protection level at 5kA L-N0.9kV0.9kV
Voltage protection level mode L-N1.35kV1.35kV
Voltage protection level mode N-PE1.5kV1.5kV
Ability to independently switch off the following current N-PE0.1kA0.1kA
Short-circuit current rating50kA50kA
Maximum overcurrent protection160A gL/gG160A gL/gG
Response time L-N25ns25ns
Response time N-PE100ns100ns
Cross-section of connected conductors solid1/35mm²1/35mm²
Cross-section of connected conductors stranded1/25mm²1/25mm²
Fault indication L-NRed indication fieldRed indication field
Fault indication N-PEnono
Remote indicationPotential-free change-over contact
Remote indication contacts250V/0.5A AC, 250V/0.1A DC
Cross-section of remote indication conductors1.5mm²1.5mm²
Degree of protectionIP20IP20
Range of operating temperatures-40°C - +80°C-40°C - +80°C
MountingDIN rail 35mmDIN rail 35mm
According to standardEN 61643-11:2012, IEC 61643-11:2011, T2
Parameter/TypeKM2-20-1+0 SC
Nominal voltage230V AC
Maximum operating voltage275V AC/350V DC
Nominal discharge current (8/20μs)20kA
Maximum discharge current (8/20μs)40kA
Voltage protection level at 5kA0.9kV
Voltage protection level1.35kV
Short-circuit current rating50kA
Maximum overcurrent protection160A gL/gG
Response time25ns
Cross-section of connected conductors solid1/35mm²
Cross-section of connected conductors stranded1/25mm²
Fault indicationRed indication field
Remote indicationPotential-free change-over contact
Remote indication contacts250V/0.5A AC, 250V/0.1A DC
Cross-section of remote indication conductors1.5mm²
Degree of protectionIP20
Range of operating temperatures-40°C - +80°C
MountingDIN rail 35mm
According to standardEN 61643-11:2012, IEC 61643-11:2011, T2
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