service breaker是什么意思

用法例句

Its main feature is: a gear which is a main part for operating the circuit breaker truck manually is mounted on the screw of the chassis of the circuit breaker truck,a gear device and a motor are located in the switchgear.

介绍一种中低压成套开关设备的中置断路器手车电动进出机构,解决现有中置断路器手车的电动操作,它是实现智能化开关柜所需的电动操作断路器手车的关键结构要素。