Indoor disconnectors, loadbreak and earthing switches

Indoor change-over switches PQAK

This switching device is used for the change-over switching of no-load circuits in the MV switchgears cabinets or in MV switching stations. The change-over switch drives can be either of electric motor or hand operated type, with manual actuation of the electrical drives. This device can be done in various types according request and switching schemes. The PQAK change-over switch can be even equiped with integrated earthing switch.

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Technical information

Rated voltage

1 – 52 kV
Rated current

100 – 4000 A
Rated shorttime current 1s (3s)

80 kA
Rated dynamic current

200 kA
Rated frequency

50 Hz (16 Hz, 60 Hz)
Mechanical endurance

2000, 5000, 10000 C-O
Minimum lifetime (years)

40
Drive type

Hand drive, Hand drive via gearbox, motor drive
Motor type

12V DC, 24V DC, 48V DC, 60V DC, 110V DC, 220V DC, 230V AC, 400V AC
Signaling positions

Limit switches per position, placed direct on main device shaft, Auxiliary cam-switch (high switch capacity)
Insulators type

Epoxy resin, porcelain (upon request)
Number of positions

2,3,4
Type of switching schemes

C-O-C, C-C-C, C-G-C, C-C-C+G etc.