SPC25 DS/1+1
The SPC25 is intended for use in TNC systems (1+0 or 3+0). For TNS and TT systems (1+1 or 3+1) the SPC25 is equipped with high energy gas discharge tube for equipotential bonding between N and PE.
The main use of SPC25 arrester is in structures of LPL I according to EN 62305, e.g. hospitals, banks, mobile operator stations, water-stations, power plants, airport buildings for air traffic control and all structures with explosive risk.
To be installed in the main switchboard.
Function of remote monitor terminals
When the SPC25 DS is operating correctly, the terminations 1-2 are connected to normally closed contacts, 2-3 are normally open. If the internal varistor component is damaged as a result of thermal overloading, terminations 1-2 will then be open and 2-3 closed.
The main use of SPC25 arrester is in structures of LPL I according to EN 62305, e.g. hospitals, banks, mobile operator stations, water-stations, power plants, airport buildings for air traffic control and all structures with explosive risk.
To be installed in the main switchboard.
Function of remote monitor terminals
When the SPC25 DS is operating correctly, the terminations 1-2 are connected to normally closed contacts, 2-3 are normally open. If the internal varistor component is damaged as a result of thermal overloading, terminations 1-2 will then be open and 2-3 closed.
Type SPC25 DS/1+1
Max. continuous operating voltage
UC
275
V AC
Lightning impulse current (10/350)
Iimp
25
kA
Impulse current (10/350) N/PE
Iimp
50
kA
Nominal impulse discharge current (8/20)
In
25
kA
Voltage protection level
Up
< 1,2
kV
Max. back-up fuse
250
AgL/gG
Article number
10642
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