Siemens UL 489 - Page 22

5 – 7
1) Valid with nominal cubicle width only
FS I, II: 22“
FS III: 32“
2) Measured from top surface of arc chutes
1) Valid with nominal cubicle width only
FS I, II: 22“
FS III: 32“
2) Measured from top surface of arc chutes
3) "16" is a measurement taken from the rounded protrusions on the rear of the housing
4) Class C with phase barriers made of insulating material only  (page 5-5)
FS
BG
Class
Dimensions for phase barriers made of insulating material
1)
(mm)
y1
2)
Z1 C y2
2)
X y3
2)
Operating voltage
(V)
480 600 480 600 480 600 480 600 480 600 480 600
I
S
60 60 470 470 25
125
100
100
0 0
60
80
H 125
80
L 140 150 120
II
S 60 60
470 470 25
125
100
100
0 0
60 80
L 100 100 140 150 150 150
C 60 60 470 470 not possible 60 150 300 300
III
L 60 60
710 710
25 125 100 150
0 0
150 150
C 300 300 not possible 300 300 400 400
FS
BG
Class
4)
Dimensions for dead metal barriers
1)
(mm)
y1
2)
Z1 C y2
2)
X
3)
Operating voltage
(V)
480 600 480 600 480 600 480 600 480 600
I
S 70 70
470 470 25
125
100
100
16 16H
100 125
125
L 140 150
II
S 100 100
470 470
25
25
125
100
100
16 16
L 125 125 140 150
III L 125 125 710 710 25 125 100 150 16 16