5.2. Reference Standards
The Vmax circuit breakers conform to the IEC 62271-
100, CEI 17-1 file 1375 Standards and those of major
industrialised countries.
5.3. Fixed circuit breaker
The fixed circuit breaker (fig. 4) is the basic version
complete with structure and front protection screen.
The fixing holes are made in the lower part of the
structure.
For the electrical connections of the circuit breaker
auxiliary circuits, the proper terminal box is available.
The earthing hole is placed in the rear part of the
circuit breaker.
Note: there is a specific fixed version for UniGear switchgear with fixed CB
called Vmax/F.
5.1. General
The Vmax series of circuit breakers are pieces of
apparatus under vacuum for indoor installation; for
the electrical performances, please refer to the
corresponding technical catalogue code 1VCP000169.
For special installation requirements, please contact
ABB.
The following versions are available:
• fixed
• withdrawable for UniGear ZS1 type switchgear
• withdrawable for PowerCube modules
• withdrawable for UniSec switchgear.
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5. Description
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