Siemens SENTRON 3WL10 Series Manual page 78

Accessories
3.2 Electronic accessories
Undervoltage release (UVR)
The undervoltage release trips the circuit breaker if the rated control supply voltage U
or drops to between 70 % and 35 % of its normal value (in compliance with the relevant
standard). The undervoltage release can be used for:
● Safe remote tripping
● Interlocking during closure
● Checking the voltage in the primary and secondary circuits
The undervoltage release is powered via the auxiliary conductor terminal system.
Note
The circuit breaker can be reclosed at a coil supply voltage of 85 % to 110 % U
Suitable for continuous operation: 100 % ON time
Technical specifications
Rated control
supply voltage U
Operating limits
Switch-on power
Continuous power
Break time UVR
76
24 V
s 30 V
48 V
60 V
110 to 120 V
120 to 127 V
220 to 240 V
240 to 250 V
380 to 400 V
415 to 440 V
AC
•
•
•
•
•
•
•
•
•
•
UVR: ON: 85 to 110 % U
UVR: OFF: ...< 70 % U
300 VA
3.5 VA
30 ms
Manual, 11/2017, L1V30499596002-01
fails
s
.
n
DC
•
•
•
•
•
•
•
•
—
—
s
s
300 W
3.5 W
Air circuit breaker 3WL10