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A-4
Functions and
characteristics
Introduction
General characteristics of the Compact NSX
range
DB112018
100 100
7
0
7
0
6
5
6
5
50 50
35 35
10 10
100
6
5
35
NSX250 H
4
2
1
3
6
5
7
9
8
10
Standardised characteristics indicated on the rating plate:
1
Type of device: frame size and breaking capacity class
2
Ui: rated insulation voltage.
3
Uimp: rated impulse withstand voltage.
4
Ics: service breaking capacity.
5
Icu: ultimate breaking capacity for various values of the
rated operational voltage Ue
6
Ue: operational voltage.
7
Colour label indicating the breaking capacity class.
8
Circuit breaker-disconnector symbol.
9
Reference standard.
10
Main standards with which the device complies.
Note:
when the circuit breaker is equipped with an extended
rotary handle, the door must be opened to access the rating
plate.
Compliance with standards
Compact NSX circuit breakers and auxiliaries comply with the following:
international recommendations:
b
IEC 60947-1: general rules
v
IEC 60947-2: circuit breakers
v
IEC 60947-3: switch-disconnectors
v
IEC 60947-4: contactors and motor starters
v
IEC 60947-5.1 and following: control circuit devices and switching elements;
v
automatic control components
European (EN 60947-1 and EN 60947-2) and corresponding national standards:
b
France NF
v
Germany VDE
v
United Kingdom BS
v
Australia AS
v
Italy CEI
v
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b
of Shipping, Det Norske Veritas, etc.), standard NF C 79-130 and recommendations
issued by the CNOMO organisation for the protection of machine tools.
For U.S. UL, Canadian CSA, Mexican NOM and Japanese JIS standards, please
consult us.
Pollution degree
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environments).
Climatic withstand
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following standards for extreme atmospheric conditions:
IEC 60068-2-1: dry cold (-55 °C)
b
IEC 60068-2-2: dry heat (+85 °C)
b
IEC 60068-2-30: damp heat (95 % relative humidity at 55 °C)
b
IEC 60068-2-52 severity level 2: salt mist.
b
Environment
Compact NSX respects the European environment directive EC/2002/95 concerning
the restriction of hazardous substances (RoHS).
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environmental impact of every product throughout its life cycle, from production to
the end of its service life.
All Compact NSX production sites have set up an environmental management
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Each factory monitors the impact of its production processes. Every effort is made to
prevent pollution and to reduce consumption of natural resources.
Ambient temperature
Compact NSX circuit breakers may be used between -25 °C and +70 °C. For
b
temperatures higher than 40°C (65°C for circuit breakers used to protect motor
feeders), devices must be derated
(pages B-8 and B-9)
.
Circuit breakers should be put into service under normal ambient, operating-
b
temperature conditions. Exceptionally, the circuit breaker may be put into service
when the ambient temperature is between -35 °C and -25 °C.
The permissible storage-temperature range for Compact NSX circuit breakers in
b
the original packing is -50 °C
(1)
and +85 °C.
(1)
-40 °C for Micrologic control units with an LCD screen.
559E1100.indd
version: 1.0