Application Range

HD series and HS series open-type knife switches and knife-shaped changeover switches (hereinafter referred to as switches) are suitable for complete distribution systems with AC 50Hz, rated voltage up to AC 400V, and rated current up to 3000A. They are used for infrequent manual making and breaking of AC circuits or as isolating switches.

Central handle switches are primarily used in power stations, do not interrupt circuits with current, and serve as isolating switches.

The central lever operation mechanism switch is mainly used in switchgears where front operation and rear maintenance are required, with the operating mechanism mounted at the front.

The side front lever operating switch is mainly used in switchgear for side front operation and front maintenance, with the operating mechanism installable on both sides of the cabinet.

Switches with arc-quenching chambers can interrupt current loads; other series of knife switches are used solely as isolating switches.

This product complies with EC60947-3 GB14048.3 standards.