Siemens SENTRON 3VL System Manual page 88

Installing/mounting
7.2 Mounting and safety clearances
Table 7- 2 Permissible safety clearances in accordance with IEC 60947
Circuit Switching
breaker type capacity
VL160X Standard High
VL160 Standard High
Very high
VL250 Standard High
Very high
VL400 Standard High
Very high
VL630 Standard High
Very high
VL800 Standard High
Very high
VL1250 Standard High
Very high
VL1600 Standard High
Very high
Definition of the permissible safety clearances in [mm] between
Q:
B:
C:
D:
If uninsulated conductors are connected to terminals 1, 3, 5 and 7, they must be insulated
from each other independently of the direction of the mains supply (see Chapter 3.1.1.). This
can be achieved using phase barriers or terminal covers.
Terminal covers must be used for the main terminals at voltages of ≥ 600 V AC
or ≥ 500 V DC.
Note
We recommend you also insulate connections 2, 4, 6 and 8 from each other for additional
safety.
Figure 7-3
88
A ≤ 415 V A > 415-690 V
With or without Without covers With covers
covers
35 mm 70 mm
50 mm 100 mm
50 mm 100 mm
50 mm 100 mm
50 mm 100 mm
50 mm 100 mm
70 mm 100 mm
100 mm 100 mm
Circuit breaker and current paths (uninsulated and grounded metal)
Circuit breaker phase terminal and lower panel
Sides of the circuit breaker and side panels left/right (uninsulated and grounded
metal)
Circuit breaker and non-conductive parts with at least 3 mm thick insulation
(insulator, insulated bar, painted plate)
Minimum clearance between two horizontally or vertically installed circuit breakers
B ≤ 690 V
35 mm 25 mm
50 mm 25 mm
50 mm 25 mm
50 mm 25 mm
50 mm 25 mm
50 mm 25 mm
70 mm 30 mm
100 mm 100 mm
System Manual, 03/2009, 110 0110 - 02 DS 01
C ≤ 690 V D ≤ 690 V
25 mm 35 mm
25 mm 35 mm
25 mm 35 mm
25 mm 35 mm
25 mm 35 mm
25 mm 35 mm
30 mm 50 mm
30 mm 100 mm
3VL molded-case circuit breakers