Datasheet

● with closed switch / for combination switch +
fuse / at 400 V / maximum
437000A²·s
● with closed switch / at 690 V / for combination
switch + gG fuse / maximum
490100A²·s
● of the fuse / at 500 V / maximum permissible
1500000A²·s
● of the gG fuse / at 690 V / maximum
permissible
940000A²·s
● of the aM fuse / at 690 V / maximum
permissible
1400000A²·s
Mechanical service life (switching cycles) / typical 10000
Position / of the switch operating mechanism after the first pole
Fuse system LV HRC fuse
Overvoltage category IV
Operating voltage / with current paths in series
● with degree of pollution 2 / at DC / rated value /
Note
440 / 3
● with degree of pollution 3 / at DC / rated value /
Note
440 / 3
Insulation voltage / rated value 1000V
Surge voltage resistance / rated value 12kV
Overvoltage in percent / relative to the operating
voltage / at AC / at 50/60 Hz
10%
Protection class
Protection class IP IP00
Protection class IP
● with closed switch / with cover or cable lug
cover
IP20
● on the front
IP00
Dissipation
Power loss [W]
● with conventional rated thermal current / per
pole
15W
● with conventional rated thermal current / per
device
45W
● with conventional rated thermal current /
without fuse / per pole
15W
● with conventional rated thermal current /
without fuse / per device
45W
● for rated value of the current / at AC / in hot
operating state / per pole
15W
● of the fuse / per fuse / maximum
25.5W
Operating current
● at AC-21 A / at 400 V / maximum
250A
3KF3325-0MF11 Subject to change without notice
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03/06/2019 © Copyright Siemens