Installing/mounting
7.2 Mounting and safety clearances
3VL molded-case circuit breakers
System Manual, 03/2009, 110 0110 - 02 DS 01
87
7.2 Mounting and safety clearances
All SENTRON VL circuit breakers can be mounted in the positions shown.
r
r
r
rr
* Max. permissible current load factor 0.9; with internal accessories only.
Figure 7-1 Mounting/installation
Safety clearances
During a short-circuit interruption, high temperatures, ionized gases and high pressures
occur in and above the arcing chambers of the circuit breaker.
Safety clearances are required to:
● allow the pressure to be distributed
● prevent fire or damage caused by any escaped ionized gases
● prevent a short circuit to grounded sections
● prevent arcing or short-circuit currents to live sections
$
%
'
&
Figure 7-2 Safety clearances
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