Download Accessories and auxiliaries

Functions
and characteristics
Accessories and auxiliaries
Fixed circuit breakers are designed for standard front
connection using bars or cables with lugs.
Cable connectors are available for bare cables. Rear
connection is also possible.
Front connection
DB112168.eps
DB112169.eps
Connection of fixed devices
Bars or cables with lugs
Standard terminals
Compact NSX100 to 630 come with terminals comprising snap-in nuts with screws:
b Compact NSX100: M6 nuts and screws. Compact NSX160/250: M8 nuts and
screws
b Compact NSX400/630: M10 nuts and screws.
These terminals may be used for:
b direct connection of insulated bars or cables with lugs
b terminal extensions offering a wide range of connection possibilities.
Interphase barriers or terminal shields are recommended. They are mandatory for
certain connection accessories (in which case the interphase barriers are provided).
Bars
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mandatory.
DB112170.eps
Insulated bar.
Maximum size of bars
Small lug for copper cables.
Compact NSX circuit breaker
Without spreaders
pitch (mm)
maximum bar size (mm)
With spreaders
pitch (mm)
maximum bar size (mm)
100/160/250
35
20 x 2
45
32 x 2
400/630
45
32 x 6
52.5
40 x 6
DB112171.eps
Crimp lugs
There are two models, for aluminium and copper cables.
It is necessary to use narrow lugs, compatible with device connections. They must
be used with interphase barriers or long terminal shields. The lugs are supplied with
interphase barriers and may be used for the types of cables listed below.
Cable sizes for connection using lugs
DB112174.eps
Right-angle terminal
extensions.
DB112176.eps
DB112175.eps
Straight terminal
extensions.
Double-L terminal
extensions.
Spreaders.
DB112180.eps
DB112179.eps
DB118544.eps
Edgewise terminal
extensions.
45° terminal
extensions.
DB112177.eps
DB112172.eps
DB112173.eps
Small lug for Al cables.
Mounting at the
back of a
switchboard.
A-74
Mounting
behind the front
panel with a
raiser.
Compact NSX circuit breaker
Copper cables
size (mm²)
crimping
Aluminium cables
size (mm²)
crimping
100/160/250
400/630
120, 150, 185
240, 300
hexagonal barrels or punching
120, 150, 185
240, 300
hexagonal barrels
Terminal extensions
Extensions with anti-rotation ribs can be attached to the standard terminals to
provide numerous connection possibilities in little space:
b straight terminal extensions
b right-angle terminal extensions
b edgewise terminal extensions
b double-L extensions
b 45° extensions.
Spreaders
Spreaders may be used to increase the pitch:
b NSX100 to 250: the 35 mm pitch can be increased to 45 mm
b NSX400/630: the 45 mm pitch can be increased to 52 or 70 mm.
Bars, cable lugs or cable connectors can be attached to the ends.
One-piece spreader for NSX100 to 250
Connection of large cables may require an increase in the distance between the
device terminals.
The one-piece spreader is the means to:
b increase the 35 mm pitch of the NSX100 to 250 circuit-breaker terminals to the
45 mm pitch of a NSX400/630 device
b use all the connection and insulation accessories available for the next largest
frame size (lugs, connectors, spreaders, right-angle and edgewise terminal
extensions, terminal shields and interphase barriers).
It may also be used for Compact INS switch-disconnectors.
Equipped with a single-piece spreader, Compact NSX devices can be mounted:
b at the back of a switchboard
b behind the front panel with a raiser.
The one-piece spreader is also the means to:
b align devices with different frame sizes in the switchboard
b use the same mounting plate, whatever the device.
Pitch (mm) depending on the type of spreader
Compact NSX circuit breaker
Without spreaders
With spreaders
With one-piece spreader
NSX100 to 250
35
45
45
NSX100 to 630
45
52.5 or 70
-
Functions
and characteristics
Accessories and auxiliaries
Connection is identical for both withdrawable and
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devices may be used.
Bars or cables with lugs
Front connection.
DB111339.eps
DB111338.eps
The plug-in base is equipped with terminals which, depending on their orientation,
serve for front and rear connection.
For rear connection of a base mounted on a backplate, the terminals must be
replaced by insulated, long right-angle terminal extensions.
For Compact NSX630 devices, connection most often requires the 52.5 or 70 mm
pitch spreaders.
DB111337.eps
DB111345.eps
DB111346.eps
Four positions.
Connection of withdrawable and plug-in
devices
Front connection with
spreaders.
Rear connection of a base
mounted on a backplate.
Connection accessories
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be used with the plug-in base (see page A-74 and page A-75).
Bare cables
DB111341.eps
DB111340.eps
All terminals may be equipped with bare-cable connectors. See the "Connection of
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With a 100 to 250 A base.
With a 400/630 A base.
DB111344.eps
Adapter for plug-in base
DB111343.eps
DB111342.eps
The adapter is a plastic component for the 100 to 250 base and the 400/630 base
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It is required for interphase barriers and the long and short terminal shields.
Adapter for 100 to 250 A - 3P
base.
Connection with bars or
cables with lugs.
A-76
Adapter for 400/630 A - 4P base.
Connection with spreaders and interphase
barriers.
Installation in switchboards
Installation
recommendations
Safety clearances and minimum distances
General rules
When installing a circuit breaker, minimum distances (safety clearances) must be
maintained between the device and panels, bars and other protection devices
installed nearby. These distances, which depend on the ultimate breaking capacity,
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If installation conformity is not checked by type tests, it is also necessary to:
b use insulated bars for circuit-breaker connections
b segregate the busbars using insulating screens.
For Compact NSX100 to 630 devices, terminal shields and interphase barriers are
recommended and may be mandatory depending on the operating voltage of the
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Power connections
The table below indicates the rules to be respected for Compact NSX100 to 630
devices to ensure insulation of live parts for the various types of connection.
b ¿[HGGHYLFHVZLWKIURQWFRQQHFWLRQ)&RUUHDUFRQQHFWLRQ5&
b plug-in or withdrawable devices.
Connection accessories such as crimp lugs, bare-cable connectors, terminal
extensions (straight, right-angle, double-L and 45°) and spreaders are supplied with
interphase barriers.
Long terminal shields provide a degree of protection of IP40 (ingress) and IK07
(mechanical impact).
Compact NSX100 to 630: rules to be respected to ensure insulation of live parts
Through panel
operating voltage
Short terminal
shields
Short terminal
shields
Short terminal
shields
Bare cables +
connectors
DB115061
Possible
Possible
Possible
Recommended Recommended
Mandatory
No
Mandatory
(supplied)
Possible
(instead of ph.
barriers)
Recommended Recommended
Mandatory
Possible for
cable
connectors
NSX100 to 250
Possible for
cable
connectors
NSX100 to 250
Mandatory
No
Mandatory (1)
(supplied)
Possible for
cable
connectors
NSX100 to 250 Recommended Recommended
Possible (1)
(instead of ph.
barriers)
No
No
Mandatory
(use of short
Mandatory
terminal shield
possible)
Mandatory
Mandatory
No
No
Mandatory
Mandatory
Mandatory
Mandatory
No
No
Mandatory
Mandatory
Mandatory
Mandatory
Insulated bars
Extension terminals
Cables + crimp lugs
Bare cables +
connectors
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B-4
DB115061
type of conductor
Insulated bars
Extension terminals
Cables + crimp lugs
u 500 V
Long terminal
shields
DB115060
With:
< 500 V
Interphase
barriers
DB115059
Possible, recommended or mandatory accessories: No insulating
accessory
DB115061
On backplate
DB115058.eps
Plug-in or withdrawable
DB115057.eps
Fixed, rear
connection
DB115056.eps
Fixed, front connection
DB115055.eps
Type of connection