Datasheet

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Data sheet 3KF4440-0LF11

Switch disconnector with fuse 400 A, Size 4, 4-pole for LV HRC fuse

Sz. 1 and 2 Front operating mechanism left Basic unit without handle

flat terminal

Model

Product brand name SENTRON

Product designation Switching device

Design of the product 3KF switch disconnector with fuses

Design of the operating mechanism without

Design of handle Without

Direction of actuation from the front

Type of the driving mechanism / motor drive No

Number of poles 4

Size of disconnecting link 2 and 1

Size of switch disconnector 4

Size of fuse link NH1, NH2

Electrical endurance (switching cycles)

● at AC-23 A / at 440 V / at 50/60 Hz

3000

● at AC-23 A / at 690 V / at 50/60 Hz

2000

● at DC-23 A / at 440 V

1000

I2t value

● with closed switch / for combination switch +

fuse / at 500 V / maximum

1205000A²·s

3KF4440-0LF11 Subject to change without notice

Page 1/

Summary of content (9 pages)

PAGE 1
Data sheet 3KF4440-0LF11 Switch disconnector with fuse 400 A, Size 4, 4-pole for LV HRC fuse Sz.
PAGE 2
● with closed switch / for combination switch + fuse / at 400 V / maximum 1 205 000 A²·s ● with closed switch / at 690 V / for combination switch + gG fuse / maximum 1 300 000 A²·s ● of the fuse / at 500 V / maximum permissible 2 150 000 A²·s ● of the gG fuse / at 690 V / maximum permissible 2 600 000 A²·s ● of the aM fuse / at 690 V / maximum permissible 2 600 000 A²·s Mechanical service life (switching cycles) / typical 8 000 Position / of the switch operating mechanism at the left end Fuse
PAGE 3
● at AC-21 A / at 500 V / maximum 400 A ● at AC-21 A / at 690 V / maximum 400 A ● at AC-23 A / at 500 V / at 50/60 Hz / rated value / maximum 400 A ● at AC-22 A / at 500 V / at 50/60 Hz / rated value / maximum 400 A ● at AC-22 A / at 400 V / at 50/60 Hz / rated value / maximum 400 A ● at AC-22 A / at 690 V / at 50/60 Hz / rated value / maximum 400 A ● at AC-23 A / at 400 V / at 50/60 Hz / rated value / maximum 400 A ● at AC-23 A / at 690 V / at 50/60 Hz / rated value / maximum 400 A ● at DC-
PAGE 4
● for combination switch + fuse / at 500 V / maximum permissible Short-time current resistance (Icw) / at 690 V AC/440 V DC / limited to 1 s / rated value 39 400 A 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 /
PAGE 5
● fuse monitoring No ● Overvoltage protection monitoring No Short circuit Short-circuit current making capacity (Icm) / for switch disconnector / at 690 V AC/440 V DC / without fuse link / rated value / minimum 24 kA Connections Arrangement of electrical connectors / for main current circuit Top and bottom Tightening torque / with screw-type terminals ● minimum 30 N·m ● maximum 44 N·m ● Type of connectable conductor cross-sections / for aluminum conductor / stranded / with lug 1x (6 ...
PAGE 6
● acc. to DIN EN 61346-2 Q ● acc. to DIN EN 81346-2 Q General Product Approval other Miscellaneous Miscellaneous Further information Information- and Downloadcenter (Catalogs, Brochures,…) http://www.siemens.com/lowvoltage/catalogs Industry Mall (Online ordering system) https://mall.industry.siemens.com/mall/en/en/Catalog/product?mlfb=3KF4440-0LF11 Service&Support (Manuals, Certificates, Characteristics, FAQs,...) https://support.industry.siemens.
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37 60 30 72 204.2 11 8 38.5 336 4 24 6.6 161 93 215 145 67.5 75.5 3 30 13 363 394.5 104 406.