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Yılsa Engineering sources products as genuine items through a wide supplier network. Typical lead time is 7-21 days, with 1-3 business days domestic transit in Türkiye. Current status is confirmed in the quote.

Is Siemens 3KF4440-4LF11 genuine and new?

Yes. This Siemens product is supplied genuine and brand-new, sold with invoice under Yılsa Engineering assurance.

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Key technical specifications are listed on the product page. For the full datasheet, dimensions and compatibility, simply contact Yılsa Engineering.

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Siemens 3KF4440-4LF11

switch disconnector with fuse 400 A, frame size 4, 4-pole for LV HRC fuse size 1 and 2 lateral operating mechanism lef basic unit without handle flat connector without fuses

SiemensMFR # 3KF4440-4LF11SKU # YLSNSFGHDGDDKN

product brand nameSENTRON

product designation3KF switch disconnector with fuses

design of the product3KF switch disconnector with fuses

product version3KF NH

design of the actuating elementwithout

design of handleWithout

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About This Product

switch disconnector with fuse 400 A, frame size 4, 4-pole for LV HRC fuse size 1 and 2 lateral operating mechanism lef basic unit without handle flat connector without fuses

Siemens 3KF4440-4LF11

Genuine, certified Siemens product
Fast sourcing through a worldwide supply network
Product selection and compatibility support from our technical team
Equivalent and alternative product suggestions
Quotation and lead time tailored to your request

Specifications

Model

product brand nameSENTRON

product designation3KF switch disconnector with fuses

design of the product3KF switch disconnector with fuses

product version3KF NH

design of the actuating elementwithout

design of handleWithout

direction of actuationFrom left

type of the driving mechanism motor driveNo

number of poles4

size of disconnecting link2 and 1

size of switch disconnector4

size of fuse linkNH1, NH2

mechanical service life (operating cycles) typical8 000

at AC-23 A at 440 V3 000

at AC-23 A at 690 V2 000

at DC-23 A at 440 V1 000

with closed switch for combination switch + fuse at 500 V maximum1 205 000 A²·s

with closed switch for combination switch + fuse at 400 V maximum1 205 000 A²·s

with closed switch at 690 V for combination switch + gG fuse maximum1 300 000 A²·s

of the fuse at 500 V maximum permissible2 150 000 A²·s

of the gG fuse at 690 V maximum permissible2 600 000 A²·s

of the aM fuse at 690 V maximum permissible2 600 000 A²·s

position of the switch operating mechanismleft

fuse systemLV HRC fuse

overvoltage categoryIV

with degree of pollution 2 at DC rated value440 / 3

with degree of pollution 3 at DC rated value440 / 3

surge voltage resistance rated value12 kV

Supply voltage

operating voltage at AC rated value maximum690 V

Protection class

protection class IPIP00

with closed switch with cover or cable lug coverIP20

on the frontIP00

Dissipation

with conventional rated thermal current per pole26 W

with conventional rated thermal current per device78 W

with conventional rated thermal current without fuse per pole26 W

with conventional rated thermal current without fuse per device78 W

for rated value of the current at AC in hot operating state per pole26 W

of the fuse per fuse maximum34 W

Main circuit

operating power at AC-23 A at 500 V rated value280 kW

operational current rated value400 A

Auxiliary circuit

number of connected NC contacts for auxiliary contacts0

number of connected NO contacts for auxiliary contacts0

number of connected CO contacts for auxiliary contacts0

number of CO contacts for auxiliary contacts0

number of NC contacts for auxiliary contacts8

number of NO contacts for auxiliary contacts8

suitability for use main switchYes

suitability for use switch disconnectorYes

suitability for use EMERGENCY OFF switchYes

suitability for use maintenance/repair switchYes

product feature interlockNo

product function phase failure monitoringNo

voltage triggerNo

undervoltage releaseNo

undervoltage release with leading contactNo

product feature sealableYes

product extension auxiliary switchYes

product extension optional locking capabilityYes

product extension optional motor driveNo

product extension optional fuse monitoringYes

fuse monitoringNo

overvoltage protection monitoringNo

Short circuit

short-circuit current making capacity (Icm) for switch disconnector at 690 V AC/440 V DC without fuse link rated value minimum24 kA

at 500 V by gG fuse rated value100 kA

at 690 V by gG fuse rated value100 kA

Connections

arrangement of electrical connectors for main current circuitTop and bottom

minimum30 N·m

maximum44 N·m

type of connectable conductor cross-sections for aluminum conductor stranded with lug1x (6 ... 240 mm²), 2x (6 ... 150 mm²)

for copper busbar1x (30 x 10 mm²)

stranded with lug according to DIN 462341x (6 ... 240 mm²), 2x (6 ... 150 mm²)

stranded with lug according to DIN 462351x (16 ... 185 mm²), 2x (16 ... 150 mm²)

type of electrical connection for main current circuitflat connector

Mechanical Design

height215 mm

width376.5 mm

depth206.5 mm

fastening methodfloor mounting

4-hole front mountingNo

front mounting with central attachmentNo

rail mountingNo

mounting positionany

Net Weight9.497 kg

Environmental conditions

minimum-25 °C

maximum70 °C

minimum-50 °C

maximum80 °C

Accessories 29

Genuine accessories that can be used with the Siemens 3KF4440-4LF11 motor and are supplied separately are listed below. Click a code to open the accessory page and see the other compatible motors.

Part no	Description	Compatible motors
3SU1400-1AA10-1FA0	Aksesuar · Commanding and signaling devices
3KF9412-0CA00	Aksesuar
3KF9112-1AA00	Aksesuar
3KD9408-8	Aksesuar
3SU1400-1AA10-1PA0	Aksesuar · Commanding and signaling devices
3SU1400-1AA10-1NA0	Aksesuar · Commanding and signaling devices
3SU1400-1AA10-1MA0	Aksesuar · Commanding and signaling devices
3SU1400-1AA10-1LA0	Aksesuar · Commanding and signaling devices
3SU1400-1AA10-1QA0	Aksesuar · Commanding and signaling devices
3SU1400-1AA10-1EA0	Aksesuar · Commanding and signaling devices
3SU1400-1AA10-1DA0	Aksesuar · Commanding and signaling devices
3SU1400-1AA10-1CA0	Aksesuar · Commanding and signaling devices
3SU1400-1AA10-1BA0	Aksesuar · Commanding and signaling devices
3NA7144	Seçmeli zorunlu ürün
3NA7142	Seçmeli zorunlu ürün
3NA6144-4	Seçmeli zorunlu ürün
3NA6144	Seçmeli zorunlu ürün
3NA6142-4	Seçmeli zorunlu ürün
3NA6142	Seçmeli zorunlu ürün
3NA3144	Seçmeli zorunlu ürün
3NE1227-0	Seçmeli zorunlu ürün
3NA3142	Seçmeli zorunlu ürün
3KF9401-2AA00	Seçmeli zorunlu ürün
3KF9401-1AA00	Seçmeli zorunlu ürün
3KF9412-0AA00	Seçmeli zorunlu ürün
8UD1151-3AF25	Seçmeli zorunlu ürün
8UD1151-3AF21	Seçmeli zorunlu ürün
3ND2144	Seçmeli zorunlu ürün
3NA3144-6	Seçmeli zorunlu ürün