Main
Device short name
Compact NS400L
Neutral position
Left
Protected poles description
3t + N/2
3t
4t
Trip unit name
STR23SE
Trip unit technology
Electronic
circuit breaker name
Compact NS400L
Trip unit rating
250 A
[ui] rated insulation voltage
750 V AC 50/60 Hz conforming to IEC 60947-2
Complementary
[in] rated current
400 A at 40 °C
320 A at 65 °C
[ue] rated operational voltage
690 V AC 50/60 Hz conforming to IEC 60947-2
750 V DC conforming to IEC 60947-2
[ics] rated service breaking capacity
130 kA at 440 V AC 50/60 Hz conforming to IEC 60947-2
150 kA at 220/240 V AC 50/60 Hz conforming to IEC 60947-2
150 kA at 380/415 V AC 50/60 Hz conforming to IEC 60947-2
100 kA at 500 V AC 50/60 Hz conforming to IEC 60947-2
100 kA at 525 V AC 50/60 Hz conforming to IEC 60947-2
Control type
Toggle
Product certifications
KEMA
ASEFA
LCIE
ASTA
[isd] short-time pick-up adjustment range
2...10 x Ir
Connection pitch
45 mm
Handle front plate colour
255 mm
Product or component type
Circuit breaker
[uimp] rated impulse withstand voltage
8 kV conforming to IEC 60947-2
[tr] long-time delay adjustment range
90…180 s 1.5 x Ir
3.2…5 s 7.2 x Ir
5…7.5 s 6 x Ir
[tsd] short-time delay adjustment range
0.04…0.06 s
Breaking capacity code
L
Device application
Distribution
circuit breaker ct rating
250 A
width (w)
140 mm
network frequency
50/60 Hz
Ik degree of protection
IK07 conforming to EN 50102
Local signalling
Positive contact indication
Mounting mode
Fixed
Downside connection
Front
Display type
LED
Mounting support
Backplate
depth
110 mm
mechanical durability
15000 cycles
electrical durability
12000 cycles 440 V AC 50/60 Hz In/2 conforming to IEC 60947-2
6000 cycles 440 V AC 50/60 Hz In conforming to IEC 60947-2
Network type
DC
AC
Pollution degree
3 conforming to IEC 60947
Instantaneous pick-up adjustment range
11 x In
Instantaneous pick-up adjustment type ii
Fixed
Long time delay adjustment type
Fixed
Long time pick-up adjustment range
0.4...1 x In
Long time pick-up adjustment type ir
Adjustable 48 settings
Suitability for isolation
Yes conforming to IEC 60947-2
Poles description
4P
Upside connection
Front
Short-time delay adjustment type
Fixed
Utilisation category
Category A
Short-time pick-up adjustment type isd
Adjustable 8 settings
Protection type
Short time short-circuit protection
Instantaneous short-circuit protection
Overload protection (long time)