Description
Main
Range ComPacT new generation
product name ComPacT NSX new generation
Device short name NSX250B
Product or component type Circuit breaker
Device application Distribution
Poles description 3P
Protected poles description 3D
[In] rated current 200 A at 40 °C
[Ue] rated operational voltage 690 V AC 50/60 Hz
network type AC
Network frequency 50/60 Hz
Suitability for isolation Yes conforming to EN/IEC 60947-2
Utilisation category Category A
[Icu] rated ultimate short-circuit
breaking capacity
40 kA Icu at 220/240 V AC 50/60 Hz conforming to IEC 60947-2
25 kA Icu at 380/415 V AC 50/60 Hz conforming to IEC 60947-2
20 kA Icu at 440 V AC 50/60 Hz conforming to IEC 60947-2
15 kA Icu at 500 V AC 50/60 Hz conforming to IEC 60947-2
Performance level B 25 kA 415 V AC
Trip unit name TM-D
Trip unit technology Thermal-magnetic
Trip unit protection functions LI
control type Toggle
Circuit breaker mounting mode Fixed
Complementary
[Ui] rated insulation voltage 800 V AC 50/60 Hz
[Uimp] rated impulse withstand
voltage
8 kV
[Ics] rated service short-circuit
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
Mechanical durability 20000 cycles
Electrical durability 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
Power dissipation per pole 15.4 W
Mounting support Backplate
Mounting position Horizontal and vertical
Flat on the back
Upside connection Front
Downside connection Front
Connection pitch 35 mm
Protection type L : for overload protection (thermal)
I : for short-circuit protection (magnetic)
Trip unit rating 200 A at 40 °C
Long-time pick-up adjustment
type Ir (thermal protection)
Adjustable
[Ir] long-time protection pick-up
adjustment range
0.7…1 x In
Long-time protection delay
adjustment type tr
Fixed
[tr] long-time protection delay
adjustment range
120…400 s at 1.5 x In
15 s at 6 x Ir
Instantaneous protection pick-up
adjustment type Ii
Adjustable
[Ii] instantaneous protection pickup
adjustment range
5…10 x In
Earth-leakage protection Without
Number of slots for electrical
auxiliaries
5 slot(s)
Width (W) 105 mm
Height (H) 161 mm
Depth (D) 86 mm
Net weight 2.4 kg
Environment
Standards EN/IEC 60947-2
overvoltage category Class II
Electrical shock protection class Class II
Pollution degree 3 conforming to IEC 60664-1
IP degree of protection IP40 conforming to IEC 60529
IK degree of protection IK07 conforming to IEC 62262
Ambient air temperature for
operation
-25…70 °C
Ambient air temperature for
storage
-50…85 °C
Relative humidity 0…95 %
Operating altitude 0…2000 m without derating
2000 m…5000 m with derating
