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Indoor High Voltage Isolation Circuit Breaker with Ceramic Insulators

Высоковольтный изоляторный выключатель внутренней установки с керамическими изоляторами

Indoor High Voltage Isolation Circuit Breaker with Ceramic Insulators

An in-house high-voltage isolation switch (commonly called a "knife switch") is a key primary circuit electrical equipment in 10-12 kV distribution systems. Its main function is to safely disconnect or connect a circuit when voltage is present...

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An in-house high-voltage isolation switch (commonly called a "knife switch") is a key primary circuit electrical equipment in 10-12 kV distribution systems. Its primary function is to safely disconnect or connect a circuit when voltage is present and no load is present, providing clear electrical isolation for the maintenance of high voltage equipment (such as circuit breakers and transformers), a vital safety guarantee for operating personnel.

This product is mainly composed of conductive blade, fixed contact, base and main high-strength ceramic insulator. The insulator serves a dual role: first, it provides reliable insulating support between the live conductive parts and the grounding base; secondly, it withstands mechanical stresses that arise during operation, ensuring precise and stable position of the knife when turning on and off.

Control is usually manual: using a rod or rotary insulator that sets the knife in motion. After disconnection, a visible air gap is formed. The product is equipped with a reliable mechanical interlocking interface, compatible with earthing switches and circuit breakers for synchronous interlocking. With simple structure, excellent insulation ability, short operating force and clearly visible breaking, it is widely applied in various high-voltage circuit breaker cabinets and switchgears.

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