(signalling circuit-breaker open) and four break contacts (signalling circuit-
breaker closed) are available.
– lever for manually charging the closing spring
– isolating contacts
– cord with connector (plug only) for auxiliary circuits, with
striker pin which does not allow connection of the plug
in the socket if the rated current of the circuit-breaker is
different from the rated current of the panel
– racking-in/out lever (the quantity must be defined according
to the number of pieces of apparatus ordered)
– locking electromagnet in the truck. This prevents the circuit-
breaker from being racked into the panel with auxiliary
circuits not connected (plug not inserted in the socket).
5.5.3. Standard fittings for withdrawable circuit-breakers
for UniGear ZS2 switchgear & PowerCube modules
The basic versions of the withdrawable circuit-breakers are
three-pole and fitted with:
– EL type manual operating mechanism
– mechanical signalling device for closing spring charged/
discharged
– mechanical signalling device for circuit-breaker open/closed
– closing pushbutton
– opening pushbutton
– operation counter
– set of ten auxiliary circuit-breaker open/closed contacts
Note: with the set of ten auxiliary contacts supplied as standard and the
maximum number of electrical applications possible, three make contacts
W = Width of the circuit-breaker.
P = Pole horizontal centre distance.
u/l = Distance between bottom and top terminal.
ø = Diameter of the isolating contact.
VD4 withdrawable circuit-breaker (36kV)
5.5.2. Types of withdrawable circuit-breakers available for UniGear ZS2 switchgear and PowerCube module
Circuit-breaker type
Ur Isc
kV kA
H=951
D=788
u/l=380
=35
P=275
W=778
..1250A
ø
36
VD4/W 36.12.32 P275
VD4/W 36.16.32 P275
VD4/W 36.20.32 P275
VD4/W 36.25.32 P275
Rated uninterrupted
current (40°C) [A]
Pole type
ø=79
P=275
W=778
1600A
31.5
=79
P=275
W=778
2000A
ø =109
P=275
W=778
2500A*
ø
Note: * - To be released. Contact ABB
11
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