SIRIUS 3RV2 motor starter protectors   
4.9 Accessories 
  SIRIUS Innovations 
424  System Manual, 01/2011, A8E56203870002-03 
4.9.8  Door-coupling rotary operating mechanism 
4.9.8.1  Description 
Door-coupling rotary operating mechanism  
Motor starter protectors with a rotary operating mechanism can be installed in the control 
cabinet and operated externally by means of a door-coupling rotary operating mechanism. 
The mechanism engages when the control cabinet door closes. If the motor starter protector 
is active, the coupling locks, thereby preventing the door opening unintentionally. This lock 
can be deactivated by maintenance personnel. In the OFF setting, the rotary operating 
mechanism can be secured against reclosing with up to 3 padlocks. The padlocks prevent 
the door from opening unintentionally.  
Door-coupling rotary operating mechanisms 
The door-coupling rotary operating mechanisms comprise a knob, a coupling driver, and an 
extension shaft 130/330 mm in length (6 x 6). They are dimensioned for IP65 degree of 
protection. The interlocking of the door prevents the unintentional opening of the control 
cabinet door when the switch is set to ON. The OFF setting can be locked with up to 3 
padlocks.  
Door-coupling rotary operating mechanism for arduous conditions 
The door-coupling rotary operating mechanisms comprise a knob, a coupling driver, and an 
extension shaft 300 mm in length (8 x 8 mm), a spacer and two metal brackets, which are 
used to mount the motor starter protector. 
The door-coupling rotary operating mechanisms are dimensioned for IP65 degree of 
protection. The interlocking of the door reliably prevents the unintentional opening of the 
control cabinet door when the switch is set to ON. The OFF setting can be locked with up 
to 3 padlocks.  
Laterally mountable auxiliary releases and 2-pole auxiliary switches can be used. The door-
coupling rotary operating mechanisms meet the requirements for isolating function according 
to IEC 60947-2.  
Versions 
Door-coupling rotary 
operating mechanism 
Versions  Width  Mountable 
Door-coupling rotary operating mechanisms 
Door-coupling rotary 
operating mechanism 
Black  Depending on version  Depending on version 
EMERGENCY STOP 
door-coupling rotary 
operating mechanism  
Red/yellow  Depending on version  Depending on version 
Door-coupling rotary operating mechanism for arduous conditions 
Door-coupling rotary 
operating mechanism 
Gray  Depending on version  Depending on version 
EMERGENCY STOP 
door-coupling rotary 
operating mechanism 
Red/yellow  Depending on version  Depending on version