Siemens Sivacon S8, Planning Information, Page: 43 / 112

40
SIVACON S8 Planning Principles – Universal mounting design
4.3.2 Withdrawable unit compartment in
SFD
The vertical distribution busbar is covered test finger
proofed (IP2X). Phase separation is possible. No connection
work is required in the compartment (Fig. 4/8). The internal
separation options up to form 4b lead to a high degree of
personal safety. Connection is effected in a separate cable
connection compartment. The connection data for main
circuits are stated in Tab. 4/9, those for auxiliary circuits in
Tab. 4/10 and the number of available auxiliary contacts in
Tab. 4/11.
Tab. 4/9: Connection data for the main circuit
Withdrawable unit
height
Nominal feeder current Terminal size
Maximum
connection cross
section
Front connection in cubicle ≥ 100 mm
≤ 35 A 16 mm
2
-
≤ 63 A 35 mm
2
-
≤ 120 A 70 mm
2
-
≤ 160 A 95 mm
2
-
≤ 250 A 150 mm
2
-
Rear connection in cubicle
100 mm ≤ 35 A 16 mm
2
-
≥ 150 mm ≤ 250 A -
1 x 185 mm
2
2 x 120 mm
2
Tab. 4/10: Connection data for the auxiliary circuit
Fig. 4/8: Open withdrawable unit compartments in SFD
Withdrawable unit
height
Control plug type
Number of available auxiliary contacts (rated current 10 A / 250 V)
Without communication With PROFIBUS With PROFINET
≥ 100 mm
12-pole 12 9 12
24-pole 24 21 24
≥ 150 mm
32-pole 32 29 -
40-pole 40 37 -
Tab. 4/11: Number of available auxiliary contacts for withdrawable
units in SFD
Type Terminal size
Push-in terminal connection 4 mm
2
Screw connection 6 mm
2