A型控制器：置于轉(zhuǎn)換開關(guān)內(nèi)部，監(jiān)測兩路電源電壓，控制電源轉(zhuǎn)換動作。
CB級：是指轉(zhuǎn)換開關(guān)主體如符合GB14048.2、GB14048.9，這些產(chǎn)品本身具有短路、過載保護功能，因此雙電源也具有這些功能；而主體開關(guān)符合GB14048.3，本身產(chǎn)品不具有類似保護功能，屬于PC級；主體開關(guān)符合GB14048.4的則屬于CC級。
R：自投自負（意思是當(dāng)常用電源出現(xiàn)異常后，雙電源會轉(zhuǎn)換至備用電源，而當(dāng)常用電源恢復(fù)后，則轉(zhuǎn)換至常用電源，反之則屬于自投不自復(fù)）。

施耐德系列雙電源自動轉(zhuǎn)換開關(guān)型號：
WATSGA-32/3P             WATSGB-32/3P          WATSNA-32A/3P            WATSNB-32A/3P
WATSGA-63/3P             WATSGB-63/3P          WATSNA-40A/3P            WATSNB-40A/3P
WATSGA-100/3P            WATSGB-100/3P         WATSNA-63A/3P            WATSNB-63A/3P
WATSGA-125/3P            WATSGB-125/3P         WATSNA-80A/3P            WATSNB-80A/3P
WATSGA-160/3P            WATSGB-160/3P         WATSNA-100A/3P           WATSNB-100A/3P
WATSGA-200/3P            WATSGB-200/3P         WATSNA-160A/3P           WATSNB-160A/3P
WATSGA-250/3P            WATSGB-250/3P         WATSNA-250A/3P           WATSNB-250A/3P
WATSGA-320/3P            WATSGB-320/3P         WATSNA-32A/4P            WATSNB-400A/3P
WATSGA-400/3P            WATSGB-400/3P         WATSNA-40A/4P            WATSNB-630A/3P
WATSGA-500/3P            WATSGB-500/3P         WATSNA-63A/4P            WATSNB-1000A/3P
WATSGA-630/3P            WATSGB-630/3P         WATSNA-80A/4P            WATSNB-1250A/3P
WATSGA-800/3P            WATSGB-800/3P         WATSNA-100A/4P           WATSNB-1600A/3P
WATSGA-32/4P             WATSGB-32/4P          WATSNA-160A/4P           WATSNB-32A/4P
WATSGA-63/4P             WATSGB-63/4P          WATSNA-250A/4P           WATSNB-40A/4P
WATSGA-100/4P            WATSGB-100/4P                                  WATSNB-63A/4P
WATSGA-125/4P            WATSGB-125/4P                                  WATSNB-80A/4P
WATSGA-160/4P            WATSGB-160/4P                                  WATSNB-100A/4P
WATSGA-200/4P            WATSGB-200/4P                                  WATSNB-160A/4P
WATSGA-250/4P            WATSGB-250/4P                                  WATSNB-250A/4P
WATSGA-320/4P            WATSGB-320/4P                                  WATSNB-400A/4P
WATSGA-400/4P            WATSGB-400/4P                                  WATSNB-630A/4P
WATSGA-500/4P            WATSGB-500/4P                                  WATSNB-800A/4P
WATSGA-630/4P            WATSGB-630/4P                                  WATSNB-1000A/4P
WATSGA-800/4P            WATSGB-800/4P                                  WATSNB-1250A/4P
                                                                        WATSNB-1600A/4P

常熟開關(guān)CAP1系列雙電源自動轉(zhuǎn)換開關(guān)型號：
    CAP1-32/P            CAP1-32/P 
    CAP1-63/P            CAP1-63/P 
    CAP1-100/P           CAP1-100/P
    CAP1-125/P           CAP1-125/P
    CAP1-140/P           CAP1-140/P
    CAP1-160/P           CAP1-160/P
    CAP1-200/P           CAP1-200/P
    CAP1-225/P           CAP1-225/P
    CAP1-250/P           CAP1-250/P
    CAP1-315/P           CAP1-315/P
    CAP1-350/P           CAP1-350/P
    CAP1-400/P           CAP1-400/P