SIRIUS 3RA21/22 load feeders
6.2 Product description
SIRIUS Innovations
System Manual, 01/2011, A8E56203870002-03
567
6.2.2.2 Self-assembled load feeders
Assembly of load feeders from individual devices
Self-assembly load feeders comprising individual devices are available as an alternative to
the 3RA2 complete device. The following components can be combined via the intermediary
of a link module.
● Motor starter protector and contactor
● Motor starter protector and soft starter
● Motor starter protector and solid-state contactor
The modularity of the SIRIUS system means that the standard devices are perfectly matched
from both a mechanical and an electrical point of view. Wiring kits for contactor assemblies
for reversing and star-delta (wye-delta) start in various connection systems provide a
straightforward means of assembling starter combinations. Assembly kits are available for
mounting self-assembled load feeders on DIN rails or busbars.
Reference
More information ... Can be found in the chapter titled ...
About assembly kits for fuseless load feeders Accessories (Page 609)
Connection systems
Self-assembled fuseless load feeders are available with the following connection system
options.
Table 6- 5 Connection systems available for self-assembled fuseless load feeders
Connection system Self-assembled fuseless load feeders
Screw connection ✓
Spring-loaded connection ✓
Ring cable lug connection ✓
1)
1)
These versions can be snapped onto a DIN rail. Mounting on a busbar adapter is not possible.
Rated powers
The pre-assembled feeders are dimensioned for the following powers:
● Direct-on-line starters up to 17.5 kW (38 A)
● Reversing starters up to 17.5 kW (38 A)
Control supply voltages of load feeders
The individual devices can be ordered with different rated control supply voltages as
appropriate for the application area of the fuseless load feeders.
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