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Combined Type 1 & 2 Devices – lightning current and surge arrestors

Combined type 1 & 2 device – lightning current and surge arrestors

  • High performance lightning current arrestor
  • Installation at the boundary of zones LPZ 0 and LPZ 1 or higher, mainly to main distribution boards
  • For protection against impact of direct or indirect lightning strikes in a wide range of applications
  • No follow current, no leakage current
Parameter/TypeKM1+2-25-2+0 SCKM1+2-25-4+0 SCKM1+2-25-3+0 SC
Nominal voltage230V AC230V AC230V AC
Maximum operating voltage260V AC260V AC260V AC
Nominal load current for "V" connection125A125A125A
Lightning impulse current (10/350μs)25kA25kA25kA
Nominal discharge current (8/20μs)30kA30kA30kA
Maximum discharge current (8/20μs)60kA60kA60kA
Voltage protection level1.5kV1.5kV1.5kV
Short-circuit current rating50kA50kA50kA
Maximum overcurrent protection250A gL/gG250A gL/gG250A gL/gG
Maximum overcurrent protection for "V" connection125A gL/gG125A gL/gG125A gL/gG
Response time100ns100ns100ns
Cross-section of connected conductors solid2.5/50mm²2.5/50mm²2.5/50mm²
Cross-section of connected conductors stranded2.5/35mm²2.5/35mm²2.5/35mm²
Fault indication
Red indication field
Remote indication
Potential-free change-over contact
Remote indication contacts
250V/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 standard
EN 61643-11:2012, IEC 61643-11:2011, T1, T2
  • Combination of high performance lightning current arrestor and encapsulated efficiency spark gap, connected in the 1 + 1 mode
  • Installation at the boundary of zones LPZ 0 and LPZ 1 or higher, mainly to main distribution boards
  • For protection against impact of direct or indirect lightning strikes in a wide range of applications
  • No leakage current
Parameter/TypeKM1+2-25-1+1 SCKM1+2-25-3+1 SC
Nominal voltage230V AC230V AC
Maximum operating voltage L-N260V AC260V AC
Maximum operating voltage N-PE255V AC255V AC
Nominal load current for "V" connection125A125A
Lightning impulse current (10/350μs) L-N25kA25kA
Lightning impulse current (10/350μs) N-PE50kA50kA
Nominal discharge current (8/20μs) L-N30kA30kA
Nominal discharge current (8/20μs) N-PE50kA100kA
Maximum discharge current (8/20μs) L-N60kA60kA
Maximum discharge current (8/20μs) N-PE100kA100kA
Voltage protection level L-N1.5kV1.5kV
Voltage protection level N-PE1.5kV1.5kV
Voltage protection level L-PE2.2kV2.2kV
Short-circuit current rating50kA50kA
Maximum overcurrent protection250A gL/gG250A gL/gG
Maximum overcurrent protection for "V" connection125A gL/gG125A gL/gG
Response time L-N100ns100ns
Response time N-PE100ns100ns
Cross-section of connected conductors solid2.5/50mm²2.5/50mm²
Cross-section of connected conductors stranded2.5/35mm²2.5/35mm²
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, T1, T2
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