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559E2100.indd
version: 1.0
Safety clearance
Minimum distance between two
adjacent circuit breakers
Minimum distance between circuit
breaker and front or rear panels
DB115046
A
1
DB115697
Front
p
a
nel
F
F
B = 0
Bare or painted sheetmetal
Note:
if F < 8 mm: an insulating screen or long
terminal shield is mandatory
(see page A-73)
.
Minimum safety clearances for Compact NSX100 to 630
Operating voltage Clearance
PP
Between
devices
Between device and sheetmetal
Painted sheet metal Bare sheet metal
A1
C1 D1 D2 C1 D1 D2
U
y
440 V
IRU GHYLFHV HTXLSSHG ZLWK
b
QR DFFHVVRULHV
0
0
30
30
5
40
40
b
LQWHUSKDVH EDUULHUV
0
0
0
0
5
0
0
b
ORQJ WHUPLQDO VKLHOGV
0
0
0
0
0
0
0
440 V < U
y
600 V
IRU GHYLFHV HTXLSSHG ZLWK
b
LQWHUSKDVH EDUULHUV
(1)
0
0
0
0
20
10
10
b
ORQJ WHUPLQDO VKLHOGV
(2)
0
0
0
0
10
10
10
U > 600 V
IRU GHYLFHV HTXLSSHG ZLWK
b
ORQJ WHUPLQDO VKLHOGV
0
10
50
50
20
100 100
(1)
Only for NSX100 to 250.
(2)
For all cases.
Clearances with respect to live bare busbars
Minimum clearances for Compact NSX100 to 630
Operating voltage Clearances with respect to live bare busbars
spacing
y
60 mm
spacing > 60 mm
F1
F2
F1
F2
8 9
350
350
80
80
U
y
9
y
9
350
350
120
120
8 ! 9
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7KHVH FOHDUDQFHV FDQ EH UHGXFHG IRU VSHFLDO LQVWDOODWLRQV DV ORQJ DV WKH FRQ¿JXUDWLRQ LV FKHFNHG
by tests.
DB115698
F1
S
p
a
cin
g
y
6
0
mm
F
2
F1
S
p
a
cin
g
>
6
0
mm
B
a
rs
B
a
rs
F
2
Live busbars.
Minimum distance between circuit breaker and top, bottom or side panels
DB115048
D1
D
2
C1
DB115049
D1
DB115050
D1
Devices without accessories.
Devices with interphase barriers or long terminal shields.
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