Siemens SENTRON 3VL System Manual page 90

Installing/mounting
7.2 Mounting and safety clearances
Safety clearances between circuit breakers
Minimum clearance between two circuit breakers installed above one another with different
kinds of connections.
A
B
C
D
①
②
Figure 7-5
Table 7- 3
Circuit breaker type
Switching capacity
A ≤ 690 V
The clearances given in the table are necessary to enable any ionized gases arising during a
short-circuit to disperse
90
Connection on the front with cable, direct
Connection on the front with cable lug
Connection on the front with flat connecting bar
Connection on the back with plug-in socket or busbar terminals
Insulation
Insulation busbar
Table of different connection types
Safety clearances between circuit breakers
VL160X
LV HRC
VL160 VL250 VL400
NHL
160 mm
VL630 VL800 VL1250
NHL
200 mm
3VL molded-case circuit breakers
System Manual, 03/2009, 110 0110 - 02 DS 01
VL1600