It is a high-voltage protection device mainly used for short-circuit protection of distribution lines.
Its core functions include:
Arc extinguishing principle: When the fuse is blown, the arc causes gas to decompose on the inner wall of the melting tube, and high-pressure airflow blows down to extinguish the arc.
Structural features: Ceramic insulators provide high voltage resistance (power frequency withstand voltage dry 42kV/wet 30kV), and the arc shield enhances arc extinguishing capability.
Applicable scenario: Suitable for outdoor 10kV~35kV systems, requiring matching short-circuit capacity.
