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Product description
Pole assembly consists of three poles and a
common duct.
Each pole comprises of a vacuum bottle, current
transfer contacts and an insulating pull rod placed in
the porcelain housing.
Robust housing for protection against fire and
hazardous conditions.
Primary terminal connectors can be provided,
such as NEMA 4.
All three poles are mounted on a common duct.
Poles are interconnected with each other as well
as to the operating mechanism with a linkage
arrangement.
Simple design - minimises spare parts.
1. Top terminal
2. Arc chamber insulator
3. Vacuum interrupter
4. Bottom terminal
5. Insulating rod
6. Support insulator
7. Bottom crank housing
Description
Medium Voltage circuit-breaker type VBF, with operating mechanism type ESH.
1.1 Design of the circuit-breaker 1. Pole assembly
The circuit-breaker is made up of three separate poles.
These consist of three main parts.
1. Pole assembly
2. Cabinet with operating mechanism
3. Steel structure
Sectional view of pole part
Rear view with back cover open