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A-2
Protection of distribution
systems
Compact NS circuit breakers
from 630b up to 3200 A
PB104842
Compact NS800L.
PB104843
Compact NS2000H.
(1)
65 °C with vertical connections. See the temperature derating
tables for other types of connections.
(2)
Ics: 100 % Icu for breaking capacity 440V/500V/660V
Ics: 75 % Icu for breaking capacity 220V/380V.
Compact circuit breakers
Number of poles
Control
manual
toggle
direct or extended rotary handle
electric
Type of circuit breaker
Connections
fixed
front connection
rear connection
front connection with bare cables
withdrawable (on chassis)
front connection
rear connection
Electrical characteristics as per Nema AB1
Breaking capacity at 60 Hz (kA)
240 V
480 V
600 V
Electrical characteristics as per IEC 60947-2 and EN 60947-2
Rated current (A)
In
50 °C
65 °C
(1)
Rated insulation voltage (V)
Ui
Rated impulse withstand voltage (kV)
Uimp
Rated operational voltage (V)
Ue
AC 50/60 Hz
Type of circuit breaker
Ultimate breaking
capacity (kA rms)
Manual
lcu
AC
50/60 Hz
220/240 V
380/415 V
440 V
500/525 V
660/690 V
lcs
AC
50/60 Hz
220/240 V
380/415 V
440 V
500/525 V
660/690 V
Electrical
lcu
AC
50/60 Hz
220/240 V
380/415 V
440 V
500/525 V
660/690 V
lcs
AC
50/60 Hz
220/240 V
380/415 V
440 V
500/525 V
660/690 V
Short-time withstand current (kA rms)
lcw
AC
50/60 Hz
1 s
3 s
Integrated instantaneous protection
kA peak ±10 %
Suitability for isolation
Utilisation category
Durability (C-O cycles) mechanical
electrical
440 V
In/2
In
690 V
In/2
In
Pollution degree
Functions and characteristics