开关组 meaning in English

shutoff block
switch block
switching group

Gca silicon commutate battery charger are the ideal portable tools for charging , they are composed with the conditions of voltage dropping through rectifier transformer , then the bridge rectifying of rectification circuit . the output full - wave pulstin current charge the storage battery . the voltage changing composed with multiband switch . the outputcurrent can be adjusted . this kind of product used any moment onctarging anyplace
Gca系列整流充电机是由整流变压器的降压，再经过流电路的桥式整流，输出全波脉动直流对电瓶进行充电，电压调速同多头波段开关组，输出流可以调节，该产品用任何需要补充充电的场所。