SIRIUS 3RT2 contactors/contactor assemblies
2.7 Accessories
SIRIUS Innovations
System Manual, 01/2011, A8E56203870002-03
221
2.7.25.2 Mounting
The contactor assemblies for star-delta (wye-delta) start can be built from contactors with
screw connections or spring-loaded connections:
● Line contactor (Q11): Left
● Delta contactor (Q13): Center
● Star contactor (Q12): Right
This arrangement applies for all installation instructions described in this chapter.
The illustration below shows example procedures for assembling the contactor assembly for
star-delta (wye-delta) start in size S0 with screw-type connection. Operating instructions 1 to
6 show how to assemble the contactors using the components supplied in the assembly kit.
Assembling the contactor assembly for star-delta (wye-delta) start with screw-type connection - size
S0
Table 2- 73 Assembling the contactor assembly for star-delta (wye-delta) start with screw-type
connection (size S0)
Step Operating instruction Figure
1 Pull the adhesive label off the nameplate on
the left-hand side of contactor Q12 and off
the nameplate on the right-hand side of
contactor Q13 (not illustrated).
2 Insert the connecting clips into the openings
on contactor Q13.
3 Secure the mechanical interlock on the left-
hand side of contactor Q12.
4 Connect contactors Q11 and Q13 together.
5 Insert the connecting clips into the openings
on contactor Q12.
6 Connect contactors Q11/Q13 and Q12
together.
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