H.V. & L.V. Fuse Link & Base

DRO Fuse Switch Disconnector

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H1 Fuse Switch Disconnector
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Applications

  • DRO-160 fuse disconnecting switch are mainly used in circuits with high short-circuit current and motor circuit as power switch, disconnecting switch or emergency switch.
  • Rated insulate voltage up to 50Hz AC, 690V; Rated working voltage up to 660V; Rated working current up to 160A; Rated short-time withstand current (valid): 3.2KA/1S. The fuse disconnecting switch complies with GB14048.3 and IEC947-3.

Design Features

    The switch with three-phase and half sealed structures is made up of two parts: the seat and the cover (melt-loading device).The front operation can observe the rated data of the fuse links and indicator status. The switch can be matched with NH000 andNH00 fuse. The switch has features of small volume, reliable operation, convenient fuse install and removal and small-required manual operation power.

Model Meaning:

    Model Meaning
Table 4 Basic data of switch
Models Rated insulation voltage (V) Rated working voltage (V) Conventional free air thermal current (A) Fuse link Weight (g) Dimension (mm)
DRO-160 690 380, 500, 660 160 NH00, NH000 1350 Figure 1
Fuse Switch Disconnector DR0-160 Fuse Switch Disconnector DR0-160 Fuse Switch Disconnector DR0-160 Fuse Switch Disconnector DR0-160 Fuse Switch Disconnector DR0-160
Fuse Switch Disconnector DR0-160 Fuse Switch Disconnector DR0-160 Fuse Switch Disconnector DR0-160 Fuse Switch Disconnector DR0-160 Fuse Switch Disconnector DR0-160
Fuse Switch Disconnector DR0-160 Fuse Switch Disconnector DR0-160 Fuse Switch Disconnector DR0-160 Fuse Switch Disconnector DR0-160 Fuse Switch Disconnector DR0-160
Figure 1
Fuse Switch Disconnector DR0-160
Table 2 The working current of the switch at different voltages and different applications
Models Rated working voltage (V) Rated working current (A) / Application Fuse link The rated breaking capacity of the fuse links (KA)
DRO-160 380 160A/AC22, 160A/AC23 NH00, NH000 100
500 160A/AC22, 80A/AC23 100
660 160A/AC21, 80A/AC23 50
Table3 Rated open and breaking capacity of the switch
Rated working voltage (V) Rated working current (A) Application The rated breaking capacity of the fuse links (KA)
Connecting Breaking
I/Ie U/Ue COSΦ Ic/Ie Ur/Ue COSΦ
380 160 AC21 1.5 1.05 0.95 1.5 1.05 0.95
160 AC22 3 1.05 0.65 3 1.05 0.65
100 AC23 10 1.05 0.45 8 1.05 0.45
500 160 AC21 1.5 1.05 0.95 1.5 1.05 0.95
100 AC22 3 1.05 0.65 3 1.05 0.65
50 AC23 10 1.05 0.45 8 1.05 0.45
660 100 AC21 1.5 1.05 0.95 1.5 1.05 0.95
80 AC22 3 1.05 0.65 3 1.05 0.65
36 AC23 10 1.05 0.45 8 1.05 0.45
Note:
  • I for connecting current
  • U post connecting voltage
  • Ie rated working current
  • Ue rated working voltage
  • Ic breaking current
  • Ur recovery current

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