Siemens 3KF4440-2LF11

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Product details

The 3KF4440-2LF11 load disconnect switch from Siemens is a highly advanced power supply system designed for demanding applications in low-voltage circuits. With a rated current of 400 amperes and a rated voltage of up to 690 volts, this device provides a reliable solution for the safe disconnection and protection of electrical installations. The switch is 4-pole and optimized for use with NH fuses sizes 1 and 2. It can be used as a main switch as well as an emergency stop or repair switch. The robust design ensures high short-circuit resistance, thus enhancing the availability of the installations. Additionally, the easy mounting on a DIN rail allows for quick installation, while extensive accessories enable flexible adaptation to specific requirements.

  • Versatile use with door coupling or direct drive in five sizes
  • Easy retrofitting of functions through extensive accessories
  • Reliable protection against electrical accidents with locking functionality and touch protection
  • Robust technology with high short-circuit resistance for high system availability
  • Safe protection even for wind power plants up to 690 V + 10%.

Key specifications

Nominal current
400 A
Nominal voltage
690 V
Protection type (IP code)
IP00

General information

Item number
31995953
Manufacturer
Siemens
Category
Mobile power distributors
Manufacturer No.
3KF4440-2LF11
Release date
24.10.2022

Colour

Colour
Grey
Exact colour description
Grey

Mobile power distributor features

Nominal current
400 A
Nominal voltage
690 V
mounting type
Front mounting
Number of poles
4x
Actuator Type
Other
Protection type (IP code)
IP00

Origin

Country of origin
China

Sustainability

Manufacturer commitment
RE100, SBTi

Scope of delivery

Items per sales unit
1 pcs.
Scope of delivery
4-pole for NH fuse size 1 and 2 Front drive left Complete device with direct drive grey Flat connection, Building size 4, Switch-disconnector with 400A fuse

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Reviews & Ratings

Warranty score

How often does a product of this brand in the «Mobile power distributors» category have a defect within the first 24 months?

Source: Digitec Galaxus
  • Siemens
    Not enough data
  • 1.Eaton
    0 %
  • 2.MeanWell
    0.1 %
  • Phoenix Contact
    Not enough data

Warranty case duration

How many working days on average does it take to process a warranty claim from when it arrives at the service centre until it’s back with the customer?

Source: Digitec Galaxus
  • Siemens
    Not enough data
  • Eaton
    Not enough data
  • MeanWell
    Not enough data
  • Phoenix Contact
    Not enough data

Unfortunately, we don't have enough data for this category yet.

Return rate

How often is a product of this brand in the «Mobile power distributors» category returned?

Source: Digitec Galaxus
  • Siemens
    Not enough data
  • 1.Phoenix Contact
    0.7 %
  • 2.MeanWell
    2.7 %
  • 3.Eaton
    3.8 %
Source: Digitec Galaxus