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Functions and
characteristics
Accessories and auxiliaries
Device installation
Compact NSX circuit breakers may be
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their back, without derating performance
levels.
There are three installation versions:
b
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b
plug-in (on a base)
b
withdrawable (on a chassis).
For the last two, components must be
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Many connection components are shared
by the three versions.
PB103354-32
DB112208
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Installation positions.
PB103598-32
DB112209
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Installation positions.
Fixed circuit breakers
Fixed circuit breakers are designed for standard connection using bars or cables
with lugs. Bare-cable connectors are available for connection to bare copper or
aluminium cables.
For connection of large cables, a number of solutions with spreaders may be used
for both cables with lugs or bare cables.
DB112200
DB112201
DB112202
Mounting on a backplate.
Mounting on rails.
Mounting on DIN rail (with
adapter).
DB112203
DB112204
L1
L2
L3
L2
8 Nm
L3
8 Nm
8 Nm
L1
L2
L3
Mounting on a Prisma
mounting plate.
Mounting on busbars with an
adapter.
Plug-in circuit breakers
The plug-in version makes it possible to:
extract and/or rapidly replace the circuit breaker without having to touch the
b
connections on the base
allow for the addition of future circuits by installing bases that will be equipped with
b
a circuit breaker at a later date
isolate the power circuits when the device is mounted on or through a panel. It acts
b
as a barrier for the connections of the plug-in base. Insulation is made complete by
the mandatory short terminal shields on the device. The degrees of protection are:
circuit breaker plugged in = IP4
v
circuit breaker removed = IP2
v
circuit breaker removed, base equipped with shutters = IP4.
v
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To avoid connecting or disconnecting the power circuits under load conditions, a
safety trip causes automatic tripping if the device is ON, before engaging or
withdrawing it. The safety trip, supplied with the kit, must be installed on the device. If
the device is disconnected, the safety trip does not operate. The device can be
operated outside the switchboard.
Accessories
Optional insulation accessories are available.
Terminal shields to protect against direct contact.
b
Interphase barriers to reinforce insulation between phases and protect against
b
direct contact.
Mounting
DB112206
DB112205
DB112207
Mounting on a backplate.
Mounting through a front
panel.
Mounting on rails.
559E1840.indd
version: 1.0