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2010 CA08103002Z-EN
www.eaton.comIZM circuit-breakers, IN switch-disconnectors
IZMX16 air circuit-breakers, INX16 switch-disconnectors
18/7
IZMX16, INX16
Communication capability
The communication-capability of the
IZMX16 circuit-breakers open up new
possibilities in power distribution. It
provides all important operational
information and passes this on. This
increases system transparency and
shortens the response times to states
such as overcurrent, phase asymme-
try and overvoltage.
A rapid intervention in a process can,
for example, prevent downtimes
and help to schedule maintenance
activities and therefore boost plant
availability.
A Modbus interface is offered as an
alternative in addition to the Profibus
interface.
Greater safety for maintenance
personnel with ARMS™
If the IZMX16 is fitted with the newly
patented ARMS system (Arcflash
Reduction Maintenance System™), a
non-delayed immediate disconnection
is ensured in the event of an arc fault.
This disconnection is even faster than
that of a non-delayed short-circuit
release.
This function can be activated directly
on the circuit-breaker or via an exter-
nal switch, such as whenmaintenance
personnel enter a hazardous area.
Other components of the ARCON arc
fault protection system, in conjunction
with the IZMX16, enable an expansion
of arc fault protection in stages.
ARCON on the Internet:
www.moeller.net/arconSelection criteria for IZMX16
circuit-breakers
Fundamental criteria for the selection
of circuit-breakers:
• Max short-circuit current I
k max
at
the circuit-breaker’ point of installa-
tion: this value determines the short-
circuit breaking capacity or the
short-circuit current carrying
capacity of the circuit-breaker. It is
compared with the I
cu
, I
cs
and I
cw
values of the switch and essentially
determines its size (see Technical
data).
• Rated operational current I
n
which
should flow through the respective
branch circuit:
This value must not be greater than
the maximum switch rated opera-
tional current of the circuit-breaker.
The rated operational current can
be adjusted down using additional
rated operational current modules.
• Ambient temperature of the circuit-
breaker: This is generally the inter-
nal temperature in the control panel.
Observe the derating values with
increased ambient temperature
(see Technical data).
• Circuit-breaker type: fixed mounted
or withdrawable units, 3 or 4 pole.
• Minimum short-circuit current,
which flows through the switching
device: The release must recognize
this value as a short-circuit and may
react with a trip.
• Protection functions of the circuit-
breaker: This is determined by the
selection of the respective over-
current release.
Documentation
Operating manual
AWB1230-1628de (deutsch)
AWB1230-1628en (english)
CurveSelect characteristics
program
Display characteristic curves
according to specific settings and
assess their interaction effectively:
www.moeller.net/de/support