Siemens SENTRON 3VL series - Page 81

Installing/mounting
6.2 Mounting and safety clearances
3VL IEC molded case circuit breakers
System Manual, 11/2013, 110 0110 - 02 DS 03
81
Table 6- 2 Permissible safety clearances in accordance with IEC 60947
Molded
case circuit
breaker
type
Switching
capacity
Minimum
footprint
m
3
A ≤ 415 V
A > 415-690 V
B ≤ 690 V
C ≤ 690 V
D ≤ 690 V
With or
without
covers
Without
covers
With
covers
VL160X
N, H
0,011
35 mm
70 mm
35 mm
25 mm
25 mm
35 mm
VL160
N, H, L
0,011
50 mm
100 mm
50 mm
25 mm
25 mm
35 mm
VL250
N, H, L
0,015
50 mm
100 mm
50 mm
25 mm
25 mm
35 mm
VL400
N, H, L
0,036
50 mm
100 mm
50 mm
25 mm
25 mm
35 mm
VL630
N, H, L
0,18
50 mm
100 mm
50 mm
25 mm
25 mm
35 mm
VL800
N, H, L
0,22
50 mm
100 mm
50 mm
25 mm
25 mm
35 mm
VL1250
N, H, L
0,22
70 mm
100 mm
70 mm
30 mm
30 mm
50 mm
VL1600
N, H, L
0,264
100 mm
100 mm
100 mm
100 mm
30 mm
100 mm
N: Stan
dard
H: High
L: Very high
Figure 6-1 Safety clearances
Figure 6-2 No minimum clearance between two horizontally or vertically installed molded case
circuit breakers
Table 6- 3 Definition of the permissible safety clearances in [mm] between
A:
Molded case circuit breakers and busbars (uninsulated and grounded metal); terminal cover
required above 600 V AC, 500 V DC
B:
Molded case circuit breaker terminal and lower panel
C: Sides of the molded case circuit breaker and side panels left / right (uninsulated and grounded
metal)
D: Molded case circuit breaker and non-conductive parts with at least 3 mm thick insulation
(insulator, insulated bar, painted plate)