Main
Device short name
NSX250HB1
Range
ComPact
circuit breaker mounting mode
Fixed
Protected poles description
3t
Product Name
ComPact NSX
Trip unit name
TM-D
Trip unit technology
Thermal-magnetic
Trip unit rating
250 A at 40 °C
[ui] rated insulation voltage
800 V AC 50/60 Hz
Trip unit protection functions
LI
performance level
HB1 75 kA 690 V AC
Complementary
[in] rated current
250 A at 40 °C
[ue] rated operational voltage
690 V AC 50/60 Hz
[ics] rated service breaking capacity
85 kA at 500 V AC 50/60 Hz conforming to IEC 60947-2
80 kA at 525 V AC 50/60 Hz conforming to IEC 60947-2
75 kA at 660/690 V AC 50/60 Hz conforming to IEC 60947-2
Control type
Toggle
depth (d)
86 mm
Product certifications
Marine
EAC
CCC
[ir] long-time protection pick-up adjustment range
0.7...1 x In
Connection pitch
35 mm
Handle front plate colour
161 mm
Product or component type
Circuit breaker
[isd] short-time protection pick-up adjustment range
5...10 x In
[uimp] rated impulse withstand voltage
8 kV
[tr] long-time delay adjustment range
120…400 s at 1.5 x In
15 s at 6 x Ir
Device application
Distribution
Electrical shock protection class
Class II
width (w)
105 mm
network frequency
50/60 Hz
Ik degree of protection
IK07 conforming to IEC 62262
long-time pick-up adjustment type ir (thermal protection)
Adjustable
Net weight
2.4 kg
long-time protection delay adjustment type tr
Fixed
Downside connection
Front
number of slots for electrical auxiliaries
5 slot(s)
Earth-leakage protection
Without
Mounting support
Backplate
mechanical durability
20000 cycles
electrical durability
5000 cycles at 690 V In
10000 cycles at 690 V In/2
10000 cycles at 440 V In
20000 cycles at 440 V In/2
Network type
AC
Pollution degree
3 conforming to IEC 60664-1
short-time protection delay adjustment type tsd
Fixed
short-time protection pick-up adjustment type isd
Adjustable
Suitability for isolation
Yes conforming to EN/IEC 60947-2
Poles description
3P
Upside connection
Front
Utilisation category
Category A
Protection type
L : for overload protection (thermal)
I : for short-circuit protection (magnetic)
Environment
Ambient air temp for storage/transportation
-50…85 °C
ip degree of protection
IP40 conforming to IEC 60529
operating altitude
0...2000 m without derating
2000 m...5000 m with derating
Range of product
ComPact NSX100...250
ambient air temperature for operation
-25…70 °C
overvoltage category
Class II
standards
EN/IEC 60947
relative humidity
0…95 %