A load break switch (LBS) typically consists of a conductive circuit, an arc-extinguishing device, an insulation system, and an operating mechanism. The conductive circuit transmits current, while the contact system, driven by the operating mechanism, connects and disconnects the circuit. The arc-extinguishing device is a crucial component that quenches the electric arc generated during circuit interruption. Common arc-extinguishing methods include gas generation, air blast, vacuum, and SF6. The insulation system ensures the dielectric strength between different parts of the switch and between the switch and the ground, guaranteeing safe operation. The operating mechanism controls the opening and closing actions of the switch and can be manual, electric, pneumatic, or hydraulic.