Fuses and Power Consumption

The MAIN SWITCH BOX contain two 10A automatic fuses with slow characteristics, one for each side of three connectors. Up to three controllerss are connected to each fuse.

The maximum input fuse is 63 A.

Use the table below to calculate the power and current consumption. As the average currents depends on the tightening cycles in a specific installation, the values below must be seen only as typical examples.

Motor size

Average Power(W)

Peak current (A)1

Number of Spindles on each fuse

Number of spindles on one Main Switch Box 2

Controller power loss (W)

QST 34

100

1.1

3

60

45

QST 42

110

1,3

3

50

50

QST 50

120

2,0

3

36

55

QST 62

150

2,7

3

24

60

QST 80/90

200

3,4

3

18

70

1 Average of the max 2s during a tightening.

2 These numbers are based on a Main Switch Box connected to a 63 A input fuse with slow characteristics.