SIRIUS 3RA6 compact starter
System Manual, 09/2014, NEB560060102000/RS-AA/006
289
Characteristic curves
12
Tripping functions
The 3RA6 compact starter has 3 characteristic tripping functions implemented using the
following releases:
1.
The current-dependent delayed overcurrent release (electronic)
2.
The short-time delayed overcurrent release (electronic)
3.
The instantaneous short-circuit release (electromagnetic)
Figure 12-1 Schematic circuit diagram of the time-current characteristic curve for 3RA6
①
Inverse-time delayed overload release (electronic)
②
Short-time delayed overcurrent release (electronic)
③
Instantaneous short-circuit release (electromagnetic)