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Compact IP55/IP66 VLT® drive down to 0.25 kW

24 September 2009
Danfoss Drives present a compact A4 enclosure in protection class IP55/66 in the FC series down to 0.25 kW.

The new frame size covers:

VLT HVAC Drive:
1.1 – 2.2 kW / 200 – 240 V and
1.1 – 4.0 kW / 380 – 480 V

VLT AQUA Drive:
0.25 – 2.2 kW / 200 - 240 V and
0.37 – 4.0 kW / 380 – 480 V

VLT AutomationDrive:
0.25 – 2.2 kW / 200 - 240 V and
0.37 – 4.0 kW / 380 – (480)500 V
The A4 frame size presents a more compact solution for customers that until now have used the A5 frame in the same power range.

Motivational factors:

  • Smaller mechanical size (32%)
  • Lighter weight (9.4 kg)
  • Easier mounting and installation for customers (outside fastening holes)
  • Easy line connection (45° connector)
  • No external fan in 0.37 – 1.5 kW /380-500V and 0.25 – 0.75 kW / 200 - 240V 
  • Ambient temperature: 50°C continuously (only drive on the market!)
  • Optional mains switch
  • Threaded cable entry holes for ‘metric areas’
  • Smooth cable entry holes for conduit installations
  • Easy fieldbus connection
  • Compatible with Ethernet based fieldbus options
  • Same internal hardware and software as for A5 
  • All options designed for placing  in A and/or B slot(s)

Limitations compared to frame size A5:

  • No space for C options in the drive (A5 is still available in the low power range)
  • Drives without external fan must be mounted with cable entries downwards.

The new A4 enclosure will be available as from end November.
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