ABB VD4 Series User Manual

8
Diagram A) Diagram B)
Figure 2/1: Vacuum circuit-breaker, type VD4,
for 12 kV, 275 mm pole centres, mechanism side
Figure 2/2: Vacuum circuit-breaker, type VD4,
for 12 kV, 210 mm pole centres, pole side
2.4 Permissible number of vacuum interrupter switching operations in relation to breaking current
Figure 2/3: Permissible number of vacuum interrupter operating cycles n as a function of the breaking current I
a
(Reference see section 2.1 – Technical data page 6)

ABB VD4 Series Specifications

General

Brand	ABB
Model	VD4 Series
Category	Circuit breakers
Language	English