Siemens SIRIUS Series

Configuration
4.1 SIRIUS 3RA6 compact starter
SIRIUS 3RA6 Compact Starter
System Manual, 02/2008, GWA 4NEB 560 0601-02 DS 02
27
Short-circuit protection
The compact starter has a rated ultimate short-circuit breaking capacity I
CU
of 53 kA at
400 V. If the short-circuit current at the installation point exceeds the compact starter's
specified rated ultimate short-circuit breaking capacity, then you will need to use a backup
fuse. It is also possible to install an upstream circuit breaker with limiter function.
Combining compact starters with SIRIUS circuit breakers
The compact starter's connecting terminals are compatible with size S0 circuit breakers from
the SIRIUS 3RV range.
Distance from neighboring components
When installing compact starters, the following distances from grounded or live parts and
from neighboring components must be observed in accordance with IEC / EN 60947-6-2.
● Lateral distance from grounded parts: 10 mm
● Arcing space, top and bottom: 30 mm
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Figure 4-1 Distance of compact starter from neighboring components (dimensions in mm)
(1) 3RA61 compact starter direct starter
(2) 3RA62 compact starter reversing starter