Characteristic Curves - Siemens SIRIUS 3RA6 System Manual

Characteristic curves

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
①
Inverse-time delayed overload release (electronic)
②
Short-time delayed overcurrent release (electronic)
③
Instantaneous short-circuit release (electromagnetic)
SIRIUS 3RA6 compact starter
System Manual, 09/2014, NEB560060102000/RS-AA/006
Schematic circuit diagram of the time-current characteristic curve for 3RA6
12
289