The ZW32-12 outdoor pole-mounted vacuum circuit breaker is a product developed by our company in response to the State Grid's primary and secondary integrated complete pole-mounted switch access requirements. The switch configuration meets the State Grid's primary and secondary integrated complete set requirements, which is convenient for the State Grid's unified procurement and mass production. The switch has a compact structure, reasonable layout, complete functions, and all indicators meet the State Grid's primary and secondary integration requirements; it uses unified parameter protection CT, zero-sequence CT and zero-sequence voltage sensor, which has the characteristics of wide measurement range, high measurement accuracy and high reliability, and complete analog quantities are convenient for accurate judgment of various line faults.