Overhead earth disconnect switch RUNM III SA 24/4K 03-056

Aerial disconnect-earthing switch – reliable protection for power lines

The RUNM III SA 24/4K aerial disconnect-earthing switch is a key element of power infrastructure, designed for the safe connection and disconnection of overhead lines and earthing to ensure safe maintenance work. The device is characterized by high reliability and durability, making it an ideal solution for both professional installers and network operators.

Design and application

The design of the disconnect switch allows for the connection of aluminum conductors with or without insulation with a cross-section of 16 to 150 mm², and in special versions even up to 185 mm². It has a flexible contact that minimizes the effects of bending the conductor during switching operations. The possibility of equipping with current transformers and combined sensors increases the functionality of the device, enabling the detection of short circuits and the direction of current flow. The disconnect switch is compatible with manual, rotary, linear and remote drives, providing flexibility in various network configurations.

Advantages and benefits

• High switching current (100A): allows switching operations without the need to disconnect the entire line section, minimizing downtime and costs.
• Safe insulation gap: ensures a visible and reliable separation of the circuit during maintenance work.
• Flexible contact: protects conductors from mechanical damage during bending.
• Expandability: the option of mounting current transformers and combined sensors increases the functionality of the device.
• Versatility: compatibility with various types of drives (manual and remote) facilitates integration with existing infrastructure.
• Compliance with standards: meets the requirements of PN-EN 62271-103, PN-EN 62271-1, PN-EN 62271-102 and PN-EN ISO 1461, guaranteeing safety and reliability.
• Certificate of conformity: confirms the high quality of workmanship and compliance with applicable standards.

Applications

The RUNM III SA 24/4K disconnect-earthing switch is used in:

• overhead medium voltage lines (24 kV),
• transformer stations,
• network branching points,
• industrial installations requiring safe disconnection and earthing of equipment.

The device is particularly useful during maintenance, repair and emergency work on power lines, ensuring the safety of personnel and minimizing the risk of equipment damage.