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A-5
Electromagnetic compatibility
Compact NSX devices are protected against:
overvoltages caused by circuit switching (e.g. lighting circuits)
b
overvoltages caused by atmospheric disturbances
b
devices emitting radio waves such as mobile telephones, radios, walkie-talkies,
b
radar, etc.
electrostatic discharges produced by users.
b
Immunity levels for Compact NSX comply with the standards below.
IEC/EN 60947-2: Low-voltage switchgear and controlgear, part 2: Circuit
b
breakers:
Annex F: Immunity tests for circuit breakers with electronic protection
v
Annex B: Immunity tests for residual current protection
v
IEC/EN 61000-4-2: Electrostatic-discharge immunity tests
b
,(& (1
5DGLDWHG UDGLR IUHTXHQF\ HOHFWURPDJQHWLF ¿HOG LPPXQLW\
b
tests
IEC/EN 61000-4-4: Electrical fast transient/burst immunity tests
b
IEC/EN 61000-4-5: Surge immunity tests
b
IEC/EN 61000-4-6: Immunity tests for conducted disturbances induced by radio-
b
IUHTXHQF\ ¿HOGV
CISPR 11: Limits and methods of measurement of electromagnetic disturbance
b
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Discrimination
Compact NSX reinforces the discrimination capabilities of the Compact NS range by
applying the rapid calculation capacity of the Micrologic trip units.
Total discrimination is now possible between NSX100 and modular Multi 9 circuit
breakers rated
y
63 A
(see page A-8)
.
Suitable for isolation with positive contact
indication
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standard 60947-2:
The isolation position corresponds to the O (OFF) position.
b
The operating handle cannot indicate the OFF position unless the contacts are
b
effectively open.
Padlocks may not be installed unless the contacts are open.
b
Installation of a rotary handle or a motor mechanism does not alter the reliability of
the position-indication system.
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the mechanical reliability of the position-indication system
b
the absence of leakage currents
b
overvoltage withstand capacity between upstream and downstream connections.
b
The tripped position does not insure isolation with positive contact indication.
Only the OFF position guarantees isolation.
Installation in class II switchboards
All Compact NSX circuit breakers are class II front face devices. They may be
installed through the door of class II switchboards (as per IEC standards 61140 and
60664-1) without downgrading switchboard insulation. Installation requires no
special operations, even when the circuit breaker is equipped with a rotary handle or
a motor mechanism.
Degree of protection
The following indications are in accordance with standards IEC 60529 (IP degree of
protection) and IEC 62262 (IK protection against external mechanical impacts).
Bare circuit breaker with terminal shields
With toggle: IP40, IK07.
b
With standard direct rotary handle / VDE: IP40 IK07
b
Circuit breaker installed in a switchboard
With toggle: IP40, IK07.
b
With direct rotary handle:
b
standard / VDE: IP40, IK07
v
MCC: IP43 IK07
v
CNOMO: IP54 IK08
v
With extended rotary handle: IP56 IK08
b
With motor mechanism: IP40 IK07.
b
PB103578-53
DB112093
559E1100.indd
version: 1.0