Interlock circuits between rotary switches and contactors with overload relays provide neat and economical solutions for many switching drive tasks.The following points are common to all interlock circuits:
Protection against automatic restarting after a motor overload or power failure
The facility for remote disconnection (e.g. emergency-stop) can be provided by one or more Off pushbuttons.
Without mains disconnection (SOND 27) [t-head3]
Mains disconnection only by contactorprimarily for star-delta circuit
With mains disconnection (SOND 28) [t-head3]
Mains disconnection by contactor and switch
Interlock with contactor (SOND 29) [t-head3]
Contactor can be energized only when switch is in the Off position
Interlock with contactor (SOND 30) [t-head3]
Contactor can be energized only when switch is in an operating position
moeller.net
Top