框架断路器也称为万能式断路器，其所有零件都装在一个绝缘的金属框架内，常为开启式，可装设多种附件，更换触头和部件较为方便，多用在电源端总开关。过电流脱扣器有电磁式，电子式和智能式脱扣器等几种。断路器具有长延时、短延时、瞬时及接地故障四段保护，每种保护整定值均根据其壳架等级在一定范围内调整。
Frame circuit breaker is also called universal circuit breaker. All its parts are installed in an insulated metal frame. It is usually open type. It can install various accessories. It is convenient to replace contacts and components. It is mostly used in the main switch of power supply. Overcurrent trippers include electromagnetic, electronic and intelligent trippers. Circuit breaker has four protection sections: long delay, short delay, instantaneous and grounding fault. The setting value of each protection is adjusted within a certain range according to its shell level.
框架断路器适用交流50Hz，额定电压380V、660V，额定电流为200A-6300A的配电网络中,主要用来分配电能和保护线路及电源设备免受过载、欠电压、短路，单相接地等故障的危害，该断路器具有多种智能保护功能，可做到选择性保护。在正常的条件下，可作为线路的不频繁转换之用。1250A以下的断路器在交流50Hz电压380V 的网络中可用作保护电动机的过载和短路。
Frame circuit breaker is suitable for 50 Hz AC, rated voltage 380V, 660V, rated current 200A-6300A distribution network. It is mainly used to distribute electric energy and protect lines and power supply equipment from overload, undervoltage, short circuit, single-phase grounding and other faults. The circuit breaker has a variety of intelligent protection functions and can achieve selective protection. Under normal conditions, it can be used as an infrequent conversion of lines. Circuit breakers below 1250A can be used to protect motor from overload and short circuit in the network with 50Hz AC voltage 380V.
框架式断路器还经常应用于变压器400V侧出线总开关、母线联络开关、大容量馈线开关和大型电动机控制开关。
Frame circuit breaker is also often used in transformer 400V side outgoing main switch, bus connection switch, large capacity feeder switch and large motor control switch.