Main
Device short name
Compact NS1250H
Range
ComPact
circuit breaker mounting mode
Fixed
Neutral position
Left
Protected poles description
4D
Product Name
ComPact NS
Trip unit name
Micrologic 5.0
Trip unit technology
Electronic
Trip unit rating
1250 A at 50 °C
[ui] rated insulation voltage
800 V AC 50/60 Hz conforming to IEC 60947-2
Trip unit protection functions
LSI
performance level
H 70 kA 415 V AC
Complementary
[ii] instantaneous pick-up adjustment range
Off
2...15 x In
[in] rated current
1250 A at 50 °C
[ue] rated operational voltage
690 V AC 50/60 Hz
[ics] rated service breaking capacity
50 kA at 380/415 V AC 50/60 Hz conforming to IEC 60947-2
30 kA at 660/690 V AC 50/60 Hz conforming to IEC 60947-2
40 kA at 500/525 V AC 50/60 Hz conforming to IEC 60947-2
50 kA at 440 V AC 50/60 Hz conforming to IEC 60947-2
50 kA at 220/240 V AC 50/60 Hz conforming to IEC 60947-2
[icw] rated short-time withstand current
19.2 kA 1 s conforming to IEC 60947-2
Control type
Rotary handle
Toggle
depth (d)
147 mm
Product certifications
ASEFA
ASTA
[ir] long-time protection pick-up adjustment range
0.4...1 x In
Connection pitch
70 mm
Handle front plate colour
327 mm
Product or component type
Circuit breaker
[isd] short-time protection pick-up adjustment range
1.5...10 x Ir
[uimp] rated impulse withstand voltage
8 kV conforming to IEC 60947-2
Auxiliary contact composition
1 NO/NC
[tr] long-time delay adjustment range
12.5…600 s at 1.5 x Ir
0.5…24 s at 6 x Ir
0.7…16.6 s at 7.2 x Ir
[tsd] short-time delay adjustment range
0.1…0.4 s I²t=on
0…0.4 s I²t=off
Device application
Distribution
width (w)
280 mm
network frequency
50/60 Hz
thermal memory
20 mn
Ik degree of protection
IK07 conforming to EN 50102
Local signalling
4 LEDs (red) for fault indication
1 LED (yellow) for overload
power losses
44 W
long-time pick-up adjustment type ir (thermal protection)
Adjustable 9 settings
Net weight
18 kg
long-time protection delay adjustment type tr
Adjustable 9 settings
Downside connection
Front
Earth-leakage protection
Without
Mounting support
Backplate
mechanical durability
10000 cycles
neutral protection setting
No protection (3D)
0.5 x Ir (3D + N/2)
1 x Ir (4D)
electrical durability
2000 cycles at 690 V In
3000 cycles at 690 V In/2
4000 cycles at 440 V In
5000 cycles at 440 V In/2
Network type
AC
instantaneous protection pick-up adjustment type ii
Adjustable
Pollution degree
3 conforming to IEC 60947
short-time protection delay adjustment type tsd
Adjustable
short-time protection pick-up adjustment type isd
Adjustable 9 settings
Suitability for isolation
Yes conforming to EN/IEC 60947-2
Poles description
4P
Upside connection
Front
Utilisation category
Category B
Protection type
L : for overload protection (long time)
S : for short time short-circuit protection
I : for instantaneous short-circuit protection
Zone selective interlocking zsi
Without