Air vent ON III SA 24/4K 03-005

Air disconnect switch ON III SA 24/4K – a reliable protection for medium voltage lines

The air disconnect switch ON III SA 24/4K is a three-pole device designed to safely switch off and disconnect electrical circuits at a voltage of 24 kV. It is a key element of energy infrastructure, providing effective insulation and protection against short circuits and overloads. The design of the disconnect switch allows simultaneous operation of all poles, simplifying operation and increasing safety.

Construction and application

The ON III SA 24/4K disconnect switch is characterized by a solid construction based on a common frame for all poles and a common drive. This construction ensures synchronization of switching operations, minimizing the risk of damage. The device is standardly equipped with porcelain insulators, but versions with composite ("K") or silicone ("S") insulators are also available, allowing the disconnect switch to be adapted to specific environmental conditions and installation requirements.

This type of disconnect switch is widely used in transformer stations, switchgear and overhead medium voltage lines. It allows for safe performance of maintenance and repair work on disconnected sections of the network. Thanks to its construction, this disconnect switch is particularly useful in places requiring high reliability and resistance to weather conditions.

Advantages and benefits

• Pole synchronization: The common drive ensures simultaneous closing and opening of all poles, which increases the safety of operations.
• Choice of insulators: Availability of versions with porcelain, composite or silicone insulators allows you to adapt the disconnect switch to specific working conditions and user preferences. Composite and silicone insulators offer better resistance to contamination and moisture, which translates into a longer service life of the device.
• Simple operation: The design of the disconnect switch facilitates assembly, disassembly and operation, which translates into saving time and costs associated with maintenance.
• High reliability: Solid construction and the use of high-quality materials guarantee long-term and trouble-free operation of the device.
• Versatility: It can be used in various configurations of medium voltage networks, both in transformer stations and on overhead lines.
• Safety: Provides effective insulation of the electrical circuit during maintenance or emergency work, minimizing the risk of electric shock.