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A-6
Functions and
characteristics
Introduction
Characteristics and performance of
Compact NSX circuit breakers from 100 to 630 A
Common characteristics
Rated voltages
Insulation voltage (V)
Ui
800
Impulse withstand voltage
(kV)
Uimp
8
Operational voltage (V)
Ue
AC 50/60 Hz
690
Suitability for isolation
IEC/EN 60947-2
yes
Utilisation category
A
Pollution degree
IEC 60664-1
3
PB103354-40
Compact NSX100/160/250.
PB103279-44
Compact NSX400/630.
Circuit breakers
Breaking capacity levels
Electrical characteristics as per IEC 60947-2
Rated current (A)
In
40 °C
Number of poles
Breaking capacity (kA rms)
lcu
AC 50/60 Hz 220/240 V
380/415 V
440 V
500 V
525 V
660/690 V
Service breaking capacity (kA rms)
lcs
AC 50/60 Hz 220/240 V
380/415 V
440 V
500 V
525 V
660/690 V
Durability (C-O cycles)
Mechanical
Electrical
440 V
In/2
In
690 V
In/2
In
Characteristics as per Nema AB1
Breaking capacity (kA rms)
AC 50/60 Hz 240 V
480 V
600 V
Characteristics as per UL 508
Breaking capacity (kA rms)
AC 50/60 Hz 240 V
480 V
600 V
Protection and measurements
Short-circuit protection
Magnetic only
Overload / short-circuit protection
Thermal magnetic
Electronic
with neutral protection (Off-0.5-1-OSN)
(1)
with ground-fault protection
with zone selective
interlocking (ZSI)
(2)
Display / I, U, f, P, E, THD measurements / interrupted-current measurement
Options
Power Meter display on door
Operating assistance
Counters
Histories and alarms
Metering Com
Device status/control Com
Earth-leakage protection
By Vigi module
By Vigirex relay
Installation / connections
Dimensions and weights
Dimensions (mm)
W x H x D
Fixed, front connections
2/3P
4P
Weight (kg)
Fixed, front connections
2/3P
4P
Connections
Connection terminals
Pitch
With/without spreaders
Large Cu or Al cables
Cross-section
mm²
(1)
OSN: Over Sized Neutral protection for neutrals carrying
high currents (e.g. 3rd harmonics).
(2)
ZSI: Zone Selective Interlocking using pilot wires.
(3)
2P circuit breaker in 3P case for B and F types, only with
thermal-magnetic trip unit.
559E1100.indd
version: 1.0