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MCBs technical details
S800 series DC applications

S800S-UC: The first choice as DC high performance MCB
The S800S-UC DC high performance MCB is in a wide range of DC applications at home.
Due to their high rated operational voltage of up to 1000 V DC the max. rated current of 125 A
and the high breaking capaicty of up to 50 kA, make these devices suitable for applications,
e.g.:
• DC track
• Galavanic applications
• Photovoltaics

S800S, N, and C: Up to 125 V DC on each pole
The AC range is also an interesting choice for DC applications up to 125 V DC per pole.

+ – + – + –
A B C
1 1 3 1 3 1 3
2 2 4 2 4
2 4
+ + –
D

+ – + – + –
E F G
1 3 5 1 3 1 3 5 7
2 4 6 2 4 2 4 6 8

S800S-UC
Short-circuit Contact to ground
Graphic between output terminals between output terminals and - earth
A 250 V DC 250 V DC
B 500 V DC 250 V DC
C 500 V DC 500 V DC
D 250 V DC 250 V DC
E 750 V DC 750 V DC
F 500 V DC 250 V DC (double failure)
G 750 V DC / 1000 V DC 500 V DC (double failure)

S800S, S800N, S800C
Short-circuit Contact to ground
Graphic between output terminals between output terminals and - earth
A 125 V DC 125 V DC
B 250 V DC 125 V DC
C 250 V DC 250 V DC
D 125 V DC 125 V DC
E 375 V DC 375 V DC
F 250 V DC 125 V DC (double failure)
G 500 V DC 125 V DC (double failure)