Grounding Switch Downstream Of Main Breaker (Option L47) - Siemens SINAMICS S120 Manual

Options
8.29 L46/L47, grounding switch upstream/downstream of main breaker
X70 "Grounding switch upstream of internal main breaker"
Table 8- 49
Terminal
1
2
3
4
5
6
7
8
Max. connectable cross-section: 2.5 mm²
1)
8.29.2

Grounding switch downstream of main breaker (option L47)

The grounding switch downstream of the internal main breaker shorts the supply network to
ground.
In this case, the grounding switch and the main breaker of the Line Connection Module are
interlocked electrically. This ensures that when the main breaker is closed, it is opened
again when the grounding switch is switched on.
If the grounding switch is engaged, it is interlocked to ensure that the main breaker cannot
be switched in.
430
Terminal block X70
Designation
1)
L1
N
NC
NO
COM
NC
NO
COM
NC: Normally-closed contact, NO: Normally-open contact, COM: Center contact
DANGER
Technical data
Grounding switch enable
230 V AC / 0.1 A
"Interruption of higher-level switches" checkback signal
Leading contact
Max. load current: 3 A
Max. switching voltage: 250 V AC
"Switch actuated" checkback signal
Max. load current: 3 A
Max. switching voltage: 250 V AC
Cabinet Modules
Manual, (GH5), 05/2010, A5E03263538A