Datasheet

● for combination switch + fuse / at 500 V /
maximum permissible
39400A
Short-time current resistance (Icw) / at 690 V AC/440
V DC / limited to 1 s / rated value
12kA
Main circuit
Operating power / at AC-23 A
● at 400 V / at 50/60 Hz / rated value
220kW
● at 500 V / at 50/60 Hz / rated value
280kW
● at 690 V / at 50/60 Hz / rated value
400kW
Operating voltage
● at AC / at 50/60 Hz / rated value
690V
● at AC / rated value / maximum
690V
Auxiliary circuit
Number of connected NC contacts / for auxiliary
contacts
0
Number of connected NO contacts / for auxiliary
contacts
0
Number of connected CO contacts / for auxiliary
contacts
0
Number of CO contacts / for auxiliary contacts 0
Number of NC contacts / for auxiliary contacts 8
Number of NO contacts / for auxiliary contacts 8
Suitability for use
● Main switch
Yes
● switch disconnector
Yes
● EMERGENCY OFF switch
Yes
● safety switch
Yes
● maintenance/repair switch
Yes
Product feature / interlock No
Product component
● Phase failure monitoring
No
● Voltage trigger
No
● undervoltage release
No
● undervoltage release with leading contact
No
Product feature / sealable Yes
Product extension
● Auxiliary switch
Yes
● optional
— locking capability
Yes
— motor drive
No
— fuse monitoring
Yes
Product function
3KF4440-0LF11 Subject to change without notice
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03/08/2019 © Copyright Siemens