Main
Range
New generation ComPacT
sectioning ability
Yes conforming to EN/IEC 60947-2
job category
Category A
name of the device
NSX250B
type of product or equipment
Circuit breaker
Product Name
Next Generation ComPacT NSX
[ui] rated insulation voltage
800 V AC 50/60 Hz
trigger protection functions
LSoI
circuit breaker installation mode
Fixed
performance level
B 25 kA 415 V CA
neutral pole position
Left
trigger name
Micrologic 2.2
type of trigger
Electronic
ultimate short-circuit breaking capacity [icu]
40 kA Icu at 220/240 V AC 50/60 Hz if conforming to CEI 60947-2
25 kA Icu at 380/415 V AC 50/60 Hz if conforming to CEI 60947-2
20 kA Icu at 440 V AC 50/60 Hz if conforming to CEI 60947-2
15 kA Icu at 500 V AC 50/60 Hz if conforming to CEI 60947-2
protected poles
4d
3d + N/2
3d
Complementary
"no" connection
35 mm
[in] rated operational current
250 A at 40 °C
[ue] rated operational voltage
690 V AC 50/60 Hz
application
Distribution
[ics] rated service breaking capacity
40 kA at 220/240 V AC 50/60 Hz conforming to IEC 60947-2
25 kA at 380/415 V AC 50/60 Hz conforming to IEC 60947-2
20 kA at 440 V AC 50/60 Hz conforming to IEC 60947-2
15 kA at 500 V AC 50/60 Hz conforming to IEC 60947-2
short-time protection threshold setting range [isd]
1.5...10 x Ir
Handle front plate colour
161 mm
trigger caliber
250 A at 40 °C
[uimp] rated impulse withstand voltage
8 kV
product weight
2,8 kg
tsd short time protection time delay setting
Fixed
electrical life
20000 cycles at 440 V In/2
10000 cycles at 440 V In
10000 cycles at 690 V In/2
5000 cycles at 690 V In
setting the differential protection time delay δt
Adjustable 9 positions
mechanical endurance
20000 cycle
width (w)
140 mm
network frequency
50/60 Hz
thermal memory
20 minutes before and after triggering
Local signalling
for ready to operate Flashing LED (green)
for overload 105% Ir LED (red)
for overload 90% Ir LED (orange)
long time protection time delay setting range [tr]
400 s at 1.5 x Jump
16 s at 6 x Jump
11 s at 7.2 x Jump
setting range of the long-time protection threshold [ir] (thermal protection)
100...250 A
upstream connection
Façade
downstream connection
Façade
instantaneous protection threshold setting range [ii] (short-circuit protection)
3000 A
number of slots for electrical auxiliaries
5 slot(s)
mounting bracket
back plate
neutral protection setting
0.5 x Ir (3d + N/2)
1 x Ir (4d)
No protection (3d)
depth (p)
86 mm
Network type
THAT
differential protection
Without
mounting position
Horizontal et vertical
Flat on the back
power loss per pole
17.6W
tr long time protection time delay setting
Fixed
instantaneous protection sensor setting ii (short circuit protection)
Fixed
ir long time protection sensor setting (thermal protection)
Adjustable 9 positions
order type
Just a little bit
kind of protection
L: for overload protection (long delay)
So: for short delay protection with fixed delay
I: for instantaneous protection against short-circuit
zsi logic selective latch area
Without
Poles description
4P
Environment
degree of pollution
3 conforming to IEC 60664-1
ip degree of protection
IP40 conforming to CEI 60529
operating altitude
0...2000 m without current reduction
2000 m...5000 m with current reduction
product certificates
CCC
EAC
Marine
class of protection against electric shock
Class II
overvoltage category
Class II
standards
EN/CEI 60947
relative humidity
0…95%
shock resistance ik
IK07 conforming to IEC 62262
operating ambient air temperature
-25…70 °C
storage room temperature
-50…85 °C