Arc Extinguish Chamber for Outdoor Pole Mounted Air Load Break Switch

The Arc Extinguish Chamber is a critical component used in outdoor pole mounted air load break switches (LBS) for interrupting load current safely and efficiently. Designed for medium voltage distribution systems from 12kV to 40.5kV, the chamber utilizes compressed gas and arc splitting technology to rapidly extinguish electrical arcs during switching operations, ensuring reliable network protection and operational safety. The arc extinguishing chamber is widely used in FKW18 series outdoor air insulated load break switches for overhead distribution lines, substations, and utility power systems.

Recursos do produto

• High efficiency arc quenching performance
• Suitable for 12kV, 24kV, 36kV, and 40.5kV load break switches
• Excellent insulation and heat resistance
• Durable UV-resistant insulating material
• Compact structure with easy installation
• Long mechanical and electrical service life
• Reliable operation under outdoor environments
• Low maintenance requirements
• Compatible with manual and motorized LBS mechanisms

Especificações técnicas

Working Principle

When the load break switch opens under load conditions, an electric arc forms between the contacts. The arc extinguish chamber rapidly cools and elongates the arc using gas generation and airflow control mechanisms, reducing ionization and extinguishing the arc safely at current zero crossing. This design significantly improves switching reliability and protects the switch contacts from excessive erosion.

Aplicativos

The arc extinguish chamber is widely used in:

• Outdoor load break switches (LBS)
• Pole mounted disconnect switches
• Medium voltage overhead distribution lines
• Rural and urban power grids
• Utility substations
• Transformer protection systems
• Ring main distribution networks

Compatible Switch Models

• FKW18-12 Outdoor Load Break Switch
• FKW18-24 Outdoor Load Break Switch
• FKW18-40.5 Outdoor Load Break Switch
• Pole mounted air insulated load switches
• Medium voltage disconnect switches

Product Advantages

Reliable Arc Interruption

Provides stable and efficient arc extinguishing performance during load switching operations.

Long Service Life

High-quality insulating materials offer excellent resistance to heat, UV, and environmental aging.

Low Maintenance

Simple structural design minimizes maintenance workload and improves operational reliability.

Excellent Outdoor Performance

Suitable for harsh environmental conditions including high humidity, pollution, and temperature variations.

Packaging & Supply

• Standard export carton or wooden case
• OEM & ODM service available
• Spare parts supply supported
• Custom dimensions available upon request