Air disconnect-earthing switch OUNp III SA 24/4S 03-042

Aerial disconnect switch with earthing – reliable line protection

This aerial disconnect switch, type OUNp III SA 24/4S, manufactured by ALPAR, is a key element of energy infrastructure, ensuring safe and efficient connection of overhead lines. It is designed for the through suspension of insulated AsXS(n) cables with cross-sections from 16 mm² to 95 mm² on standard hook bolts. Its solid construction and precise workmanship guarantee long-lasting and trouble-free operation in demanding weather conditions.

Construction and installation – durability and ease of installation

The disconnect switch clip is made of hot-dip galvanized profiled sheet metal, which ensures high resistance to corrosion and mechanical damage. The M8 butterfly screw, also hot-dip galvanized, guarantees secure and stable fastening. A replaceable rubber insert, resistant to UV radiation and weather conditions, adapts to the cable cross-section (from AsXS(n) 2X16 to AsXS(n) 4X95), ensuring optimal contact and safety. Installation is done directly on the pole base, which simplifies the installation process and minimizes costs.

Application and benefits – safety and efficiency

The OUNp III SA 24/4S disconnect switch is used in electricity distribution networks where reliable disconnection of overhead lines is required for maintenance or repair work. Its three-pole design with a common base and drive ensures simultaneous closing and opening of all poles, increasing the safety of operations. The current-carrying parts made of copper protected against corrosion by tinning (optionally silver plating) ensure low connection resistance and minimize energy losses. The movable joint with the current clamp protects the cable or power supply line from breakage during operation of the disconnect switch.