Wiring for the inside-delta circuit in Ex operation with additional line contactor in the delta
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F1 Fuse
S1 Switch: Motor On / O
S2 Pushbutton: Reset
Q1 Motor starter protector
Q11 3RW55 soft starter
Q21 Line contactor
P1 Indicator light
M1 Motor
PE Protective conductor
F3* aR partial-range fuse for protection of semiconductors, e.g. SITOR 3NE3/4 or 3NC (optional)
Example circuits
A.3 Special applications
SIRIUS 3RW55 and 3RW55 Failsafe Soft Starters
Equipment Manual, 02/2022, A5E35630887002A/RS-AF/006 309
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