ABB***代理Emax/Emax2空气断路器大电流好价格ABB正规代理-******断路器产品Emax2新型低压空气断路器框架脱扣器*********1SDA058189R1PR121/P-LIPR121/P-LSIPR121/P-LSIGPR122/P-LIPR122/P-LSIPR122/P-LSIGPR123/P-LSIPR123/P-LSIG)