Application planning
4.2 Safe isolation
SIRIUS 3RA6 compact starter
28
System Manual, 09/2014, NEB560060102000/RS-AA/006
4.2
Safe isolation
Safe isolation
To be able to guarantee safe isolation of the circuits from each other in accordance with
IEC/EN 60947-1, the following operating voltages are permissible:
Table 4- 2
Safe isolation (3RA61/62 compact starter)
Control
circuit
Auxiliary circuit
Main circuit
Internal
auxiliary
switch
"Fault"
signaling
contact
"Overload"
signaling
contact
External
auxiliary
switch
Terminal
labeling
A1/A2,
B1/B2
13/14,
21/22
77/78
98/95/96
..NO/..NC
1L1/3L2/5L3
2T1/4T2/6T3
Control circuit
A1/A2, B1/B2 —
300 V
300 V
300 V
300 V
400 V
Auxiliary
circuit
Internal
auxiliary
switch
13/14, 21/22
300 V
—
250 V
250 V
250 V
400 V
"Fault"
signaling
contact
77/78
300 V
250 V
—
250 V
250 V
400 V
"Overload"
signaling
contact
98/95/96
300 V
250 V
250 V
—
250 V
400 V
External
auxiliary
switch
..NO/..NC
300 V
250 V
250 V
250 V
—
400 V
Main circuit
1L1/3L2/5L3
2T1/4T2/6T3
400 V
400 V
400 V
400 V
400 V
—
