The ZW32-24 outdoor column-mounted high-voltage vacuum circuit breaker (hereinafter referred to as the circuit breaker) is a control and protection device in the rated voltage 24KV, 50HZ AC three-phase high-voltage distribution network. It is mainly used to break and close the load current, overload current and short-circuit current in the power line. It is suitable for protection and control in power distribution systems of substations and industrial and mining enterprises. This circuit breaker adopts column type and dry structure, with reliable insulation, long electrical life and maintenance-free. It is especially suitable for the requirements of frequent operating places. It is more suitable for installation and use in rural power grids with weak inspection and maintenance capabilities. It complies with the requirements of "GB1984 AC high-voltage circuit breaker", "GB1985 AC high isolation switch and grounding switch", DL/T402, DL/T4.3 and corporate standard OHX.520.701.