87 / 248
A-73
Insulation of live parts
Terminal shields
Insulating accessories used for protection against direct contact with power circuits.
They provide IP40 degree of protection and IK07 mechanical impact protection.
Terminal-shield types
Compact NSX100 to 250 and NSX400/630 3P or 4P can be equipped with:
short terminal shields
b
long terminal shields.
b
All terminal shields have holes or knock-outs in front for voltage-presence indicators.
Short terminal shields
They are used with:
SOXJ LQ DQG ZLWKGUDZDEOH YHUVLRQV LQ DOO FRQQHFWLRQ FRQ¿JXUDWLRQV
b
¿[HG YHUVLRQV ZLWK UHDU FRQQHFWLRQ
b
Long terminal shields
They are used for front connection with cables or insulated bars.
They comprise two parts assembled with captive screws, forming an IP40 cover.
The top part is equipped with sliding grids with break marks for precise adaptation
b
to cables or insulated bars.
The rear part completely blocks off the connection zone. Partially cut squares can
b
be removed to adapt to all types of connection for cables with lugs or copper bars.
Long terminal shields may be mounted upstream and downstream of:
¿[HG GHYLFHV
b
the base of plug-in and withdrawable versions, thus completing the insulation
b
provided by the mandatory short terminal shields on the device
the one-piece spreader for NSX100 to 250
b
the 52.5 mm spreaders for NSX400/630.
b
Terminal shields and pitch
Combination possibilities are shown below.
Circuit breaker
NSX100/160/250 NSX400/630
Short terminal shields
Pitch (mm)
35
45
Long terminal shields
Pitch (mm)
35
45
52.5
DB111347
DB111348
Long terminal shields.
Short terminal shields.
DB111349
2
1
1
Partially cut removable squares.
2
G
rids with break marks.
DB111355
Assembled with captive screws.
Interphase barriers
Safety accessories for maximum insulation at the power-connection points:
they clip easily onto the circuit breaker
b
VLQJOH YHUVLRQ IRU ¿[HG GHYLFHV DQG DGDSWHUV RQ SOXJ LQ EDVHV
b
not compatible with terminal shields
b
the adapter for the plug-in base is required for mounting on plug-in and
b
withdrawable versions.
Rear insulating screens
Safety accessories providing insulation at the rear of the device.
Their use is mandatory for devices with spreaders, installed on backplates, when
terminal shields are not used.
The available screen dimensions are shown below.
Circuit breaker
NSX100/160/250
NSX400/630
3P
W x H x thickness (mm)
140 x 105 x 1
203 x 175 x 1.5
4P
W x H x thickness (mm)
175 x 105 x 1
275 x 175 x 1.5
DB111356
Interphase barriers.
DB111357
Rear insulating screens.
7HUPLQDO VKLHOGV DUH LGHQWLFDO IRU ¿[HG DQG
SOXJ LQ ZLWKGUDZDEOH YHUVLRQV DQG FRYHU DOO
DSSOLFDWLRQV XS WR 9
7KH\ H[LVW IRU WKH WR $ DQG
A ratings, in long and short versions.
559E1840.indd
version: 1.0