Product description
3.3 Applications
SIRIUS 3RA28 function modules for mounting on 3RT2 contactors
Manual, 02/2019, A5E03656507620A/RS-AD/005
21
3.3.2
Function modules for star-delta (wye-delta) start
Applications
The function module for star-delta (wye-delta) start is used to switch from star (wye) to delta
operation.
Features
The function module for star-delta (wye-delta) start has the following features:
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All modules with wide control voltage range
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Integrated varistor (surge suppressor)
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One module kit for contactor screw-type and spring-loaded connection systems
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One module kit for S00, S0, S2 and S3 size contactors
(options only with main circuit connecting comb)
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Large wide voltage range (24 to 240 V AC/DC) and
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3 selectable time ranges (10 s, 30 s, 60 s)
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Operating time adjustment from 5 to 100% per time range (corresponds to 0.5 s to 60 s)
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Changeover delay set to a non-
adjustable value of ≥
50 ms
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Switch position indication for the contactor below in the form of a mechanical switch
position indicator (plunger)
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Control exclusively via A1/A2 on the line contactor below
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No further wiring required
The wide voltage and the wide time range ensure advanced use of the function modules.
