Siemens SENTRON 3VL160X System Manual page 82

Installing/mounting
6.2 Mounting and safety clearances
If uninsulated conductors are connected to terminals 1, 3, 5, they must be insulated from
each other independently of the direction of the mains supply. 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 and 6 from each other for additional
safety.
Minimum clearance between two horizontally or vertically installed molded case circuit breakers
Ensure the busbar or cable connection does not reduce the air insulation clearance. The
permissible clearance between two molded case circuit breakers applies for both fixed-
mounted and plug-in versions. Some accessories may increase the width of the circuit
breaker.
F
Figure 6-3
The clearance between the terminal and the grounded metal must be G ≥ 12 mm.
If the clearance to ground G is < 12 mm, live parts must be insulated or a suitable barrier
must be installed.
NOTICE
Depending on the application, appropriate air and creepage distances must be observed
that are described in standards IEC 61439-1 and 61439-2.
82
No minimum clearance is required between the molded case circuit breaker and the control
cabinet door
Minimum clearance between the molded case circuit breaker and metal
3VL IEC molded case circuit breakers
System Manual, 11/2013, 110 0110 - 02 DS 03