Why Should You Choose an Air Type Load Break Switch for Reliable Power Distribution?

In modern electrical networks, safety, efficiency, and reliability are critical. One device that ensures smooth power distribution and fault protection is the Air Type Load Break Switch. This switch is widely used in medium-voltage systems for switching and isolating electrical circuits, particularly where load currents need to be interrupted safely. Its role is indispensable in industrial, commercial, and utility applications.

What Is an Air Type Load Break Switch?

An Air Type Load Break Switch (LBS) is a mechanical switching device designed to make, carry, and break specified currents under normal circuit conditions, and to handle short-circuit making capacity. The breaking medium is air, which ensures insulation and arc extinction. This makes the device reliable, cost-effective, and suitable for a wide range of electrical systems.

Key Features and Parameters

To evaluate an Air Type Load Break Switch, it is essential to look at its technical parameters. These values determine its performance and suitability for specific environments.

Main Parameters

• Rated Voltage: 12kV, 24kV, 36kV

• Rated Current: 400A, 630A, 1250A

• Frequency: 50/60Hz

• Short-Time Withstand Current (1s): 16kA / 20kA / 25kA

• Peak Withstand Current: Up to 50kA

• Rated Short-Circuit Making Current: 40kA

• Operating Mechanism: Manual / Motorized

• Insulation Medium: Air

• Installation Method: Indoor or Outdoor

Technical Table

This table illustrates the versatility of the switch, making it a preferred choice across different sectors.

Benefits of Using Air Type Load Break Switch

1. Enhanced Safety – Provides arc extinction in air, ensuring safe interruption of load currents.

2. Cost-Effective Solution – Compared to SF6 gas switches, air type switches are environmentally friendly and economical.

3. Wide Application – Suitable for medium-voltage distribution systems, industrial plants, and utilities.

4. Long Service Life – Mechanical endurance with thousands of operation cycles.

5. Easy Operation – Available in both manual and motorized mechanisms for flexibility.

6. Reliable Performance – Handles both normal and fault conditions with high breaking capacity.

Applications

Air Type Load Break Switches are widely used in:

• Power Distribution Networks – for sectionalizing and isolating circuits.

• Substations – to ensure safe switching of feeders.

• Industrial Facilities – to protect electrical equipment from overloads and faults.

• Renewable Energy Systems – ensuring safe integration of wind and solar farms into grids.

FAQ: Common Questions About Air Type Load Break Switch

Q1: What is the main purpose of an Air Type Load Break Switch?
A1: The primary purpose is to safely interrupt load currents and isolate circuits in medium-voltage networks. It provides safety for maintenance operations and ensures reliable power distribution.

Q2: How does an Air Type Load Break Switch differ from an SF6 switch?
A2: Unlike SF6 gas switches, which use sulfur hexafluoride gas for arc extinction, an Air Type Load Break Switch relies on air as the insulation and arc extinguishing medium. This makes it more environmentally friendly and easier to maintain.

Q3: Can Air Type Load Break Switches be used outdoors?
A3: Yes, they are designed for both indoor and outdoor applications. With weatherproof enclosures and robust insulation, outdoor models are ideal for substations and distribution lines.

Q4: What maintenance is required for an Air Type Load Break Switch?
A4: Regular inspection of contacts, mechanical parts, and insulation is necessary. Lubrication of moving components and checking the operating mechanism ensures long-term reliability. Compared to other switch types, maintenance is relatively simple and cost-efficient.

Why Work With Zhejiang SanGao Electric Co., Ltd.?

When it comes to manufacturing and supplying Air Type Load Break Switches, Zhejiang SanGao Electric Co., Ltd. stands out for:

• Advanced Production Facilities – ensuring high precision and durability.

• Strict Quality Control – every unit is tested before delivery.

• Global Standards Compliance – meeting IEC, GB, and ANSI requirements.

• Customized Solutions – tailored products for different voltage and current needs.

• Excellent After-Sales Service – providing technical support and spare parts.

By choosing Zhejiang SanGao Electric Co., Ltd., customers benefit from both premium-quality products and professional engineering support.

Conclusion

The Air Type Load Break Switch is a critical component in medium-voltage electrical networks, offering safe, efficient, and reliable switching operations. With its environmentally friendly design, strong performance parameters, and flexible applications, it remains one of the most cost-effective choices in modern power distribution.

For high-quality Air Type Load Break Switches and professional support, contact Zhejiang SanGao Electric Co., Ltd. today to discuss your project requirements.