KM1+2-12.5-1+1 SC

12.5kA Type 1 & 2 lightning current and surge arrester
Combination of varistor SPD and encapsulated spark gap connected in the 1 + 1 mode. Use in TT system main distribution boards on the boundary of LPZ0 and LPZ1 and sub-distribution boards on the boundary of LPZ1 and LPZ2 (if >100m away from the MDB).

Suitable for houses, commercial and industrial buildings.

Category: Part: KM1+2-12.5-1+1 SC
Order number
KM1+2-12.5-1+1 SC
System
1 phase TT/2 pole
Nominal voltageUn
230V AC
Nominal voltageUO
230V/400V AC ± 10%
Maximum operating voltage L-NUc
275V AC
Maximum operating voltage N-PEUc
255V AC
Lightning impulse current (10/350μs) L-NIimp
12.5kA
Lightning impulse current (10/350μs) N-PEIimp
25kA
Nominal discharge current (8/20μs) L-N/N-PEIn
30kA
Maximum discharge current (8/20μs) L-N/N-PEImax
60kA
Voltage protection level at 5kA L-NUp
0.9kV
Voltage protection level L-N/N-PE/L-PEUp
1.5kV
Short-circuit current ratingISCCR
50kA
Maximum overcurrent protection
160A gL/gG
Response time L-Nta
25ns
Response time N-PEta
100ns
Cross-section of connected conductors solid (min - max)
1mm² - 35mm²
Cross-section of connected conductors stranded (min - max)
1mm² - 25mm²
Fault indication L-N
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 conductors
1.5mm²
Degree of protection
IP20
Range of operating temperatures (min - max)
-40°C - +80°C
Mounting
DIN rail 35mm
According to standard
EN 61643-11:2012, IEC 61643-11:2011 / T1, T2
Weight
250g (nett), 290g (gross)
LPL I + II
SYSTEM:SINGLE PHASE TT
MDB:-
SDB:BOUNDARY of LPZ1 & LPZ2 (if >50m away from MDB)

LPL III + IV
SYSTEM:SINGLE PHASE TT
MDB:BOUNDARY of LPZ0 & LPZ1
SDB:BOUNDARY of LPZ1 & LPZ2 (if >50m away from MDB)

  • Remote signalling
  • Reversible installation
  • Biconnect terminals
  • Locking pluggable modules
  • Optical lifetime status indication
  • No follow-through current
  • No leakage current
  • Coordinated range (install in close proximity to each other)

BS:EN 62305 (lightning protection) and EN 61643-11 (surge protection devices).

CLICK THE IMAGE BELOW TO DOWNLOAD INSTALLATION GUIDE PDF

C14921 SPD Installation Guide

Spare modules are available

DESCRIPTION
ORDER NUMBER
Spare Module L-N (L-PE)
KM1+2-12.5
Spare Module N-PE
KM1+2-12.5-NPE

Replace when fault indication indicator turns from green to red