Air vent valve ONMp III SA 24/4K 03-021

Air disconnect switch – reliable protection for power lines

The ONMp III SA 24/4 air disconnect switch is a key element of electrical infrastructure, designed for the safe mounting of grounding wire on roofs and providing reliable insulation in medium-voltage networks. The modular design of this disconnect switch allows for flexible adjustment of the poles relative to each other, making installation easier in various configurations.

Construction and application

The ONMp III SA 24/4 disconnect switch features an asymmetrical three-pole design with a common support beam and drive for all poles. This ensures simultaneous closing and opening of all poles, which is essential for safety and network efficiency. It is adapted for direct mounting on the pole base, simplifying the installation process. Made of high-quality materials, it guarantees long-lasting and trouble-free operation even in harsh weather conditions.

Advantages and benefits

• Modular design: Allows adaptation to individual needs and installation conditions.
• Common drive: Synchronizes the operation of all poles, increasing safety and reliability.
• Choice of insulators: Available versions with porcelain, silicone, or composite (K) insulators, allowing optimization for specific installation requirements. Silicone insulators offer better resistance to dirt and weather conditions.
• Adaptation for pole mounting: Simplified mounting directly on the pole base minimizes installation time and costs.
• Safety: Provides effective insulation and protection against short circuits and overloads in the power grid.
• Durability: The use of high-quality materials guarantees a long service life of the device.
• Left-hand operation: Disconnect switches with left-hand operation open from left to right, which should be considered during installation planning.

This disconnect switch is a solid solution for both professional installers and end-users looking for reliable protection of power lines. Thanks to its design and configuration options, it meets the requirements of various applications in medium-voltage networks.