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SYNADINOS & SON LTD

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Centrifugal switches

products gr

CENTRIFUGAL SWITCHES

TYPE E5

Dmax

dw

LR

Da

Ra

Dt

di

db

ds

a

b

h

hn

L

O7

52

10-16

23

55


44

17


M4



11

47

30+/-1

O8

61

17-22

24

65


52

23


M4



11

58

30+/-1

TYPE E6















12

61

17-22

24



52

23


M4

45

60

14


36+/-1

13

70

22-27

28


38

62

28


Μ4

53

70

16


42+/-1





























































4,2

4,2

4,2

32,5

4,2

The centrifugal switches are mainly applied for switching off the auxiliary phase. The function is to switch off the auxiliary phase  of single-phase motors, before reaching the normal running speed. For safety reasons the switch-off is proceeded at 80% of the synchronous motor speed.

How does it work?

When the motor is in standstill position, the contacts of the switch are closed. At this time, the auxiliary phase is hooked up and the motor is ready to start. When switching on the motor, the run-up is done with the main phase and the auxiliary phase simultanously. When it reaches the breaking speed the auxiliary phase will cut off. The motor finally reaches its normal running speed without the auxiliary phase.
During run-up the motor needs high currents. Therefore the auxiliary phase is broken with relative high currents as well. If capacitors are used for the auxiliary phase there will be additional high voltages. This causes very high requirements for the switching ability of the centrifugal switch. The switches manifactured by Vosseler meet these requirements execellently.


The pictures of products are only demonstrative and may be different than the real look of products. It does not change their basic features.