塑壳断路器作为与框架断路器一样在目前得到了广泛应用的一种断路器。那么这两种断路器在实际应用过程中有哪些区别呢，下面ABB塑壳断路器代理厂家为我们简要分析一下。

As a kind of circuit breaker, molded case circuit breaker has been widely used as frame circuit breaker. So what are the differences between these two kinds of circuit breakers in practical application? The following ABB molded case circuit breaker agent will briefly analyze it for us.

1.塑壳断路器采用的是塑料化结构，它的特点是断路器外壳和框架都采用的是塑料压制而成，并且它将触头、灭弧系统等都放在了一个绝缘小室中，以防止其之间发生短路，并为了确保电弧能够向上喷出，保证了触头系统可靠分断。而框架断路器采用的则是模块化结构，它分为框架、触头灭弧系统、手动操作机构、电动操作机构、智能型控制器以及抽屉座等结构。并且其每个部分均可成为一个完整独立的部件，组装时只需1-2个螺钉即可将其固定，拆装也十分方便，便于其检修维护。

1. The molded case circuit breaker adopts a plastic structure, which is characterized in that the shell and frame of the circuit breaker are made of plastic, and the contact and arc extinguishing system are placed in an insulating chamber to prevent short circuit between them. In order to ensure that the arc can be ejected upward and ensure the reliable breaking of the contact system. The frame circuit breaker adopts modular structure, which is divided into frame, contact arc extinguishing system, manual operating mechanism, electric operating mechanism, intelligent controller and drawer seat. And each part can become a complete and independent part. It can be fixed with only 1-2 screws during assembly. It is also very convenient for disassembly and assembly, which is convenient for its maintenance.

2.塑壳断路器的产品种类繁多，其特点是结构紧凑，操作容易，其结构与功能也比较简单。而框架断路器则功能完善，特别是近年来的单片机技术的广泛应用，从而使框架断路器逐步朝着高性能、易维护、网络化的方向发展。

2. Molded case circuit breakers have a wide variety of products, which are characterized by compact structure, easy operation, and simple structure and function. The frame circuit breaker has perfect functions, especially the wide application of single chip microcomputer technology in recent years, which makes the frame circuit breaker gradually develop in the direction of high performance, easy maintenance and networking.

3.在额定电流上，塑壳断路器一般为630A以下，而框架断路器的额定电流要大很多，一般为630A-6300A。

3. In terms of rated current, the rated current of molded case circuit breaker is generally below 630A, while the rated current of frame circuit breaker is much larger, generally 630a-6300a.

4.而在分段能力上，框架断路器要比塑壳断路器高。一般情况下，800A以上的回路或分段能力要求比较高的回路大多采用的是框架断路器，而630A以下的回路，则一般使用塑壳断路器。

4. In terms of sectioning capacity, the frame circuit breaker is higher than the molded case circuit breaker. Generally, frame circuit breakers are mostly used for circuits above 800A or circuits with high sectioning capacity requirements, while molded case circuit breakers are generally used for circuits below 630A.

5.框架断路器的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，其更换触头和部件也较为方便，多用在电源端总开关。而塑壳断路器的接地线端子外触头、灭弧室、脱扣器和操作机构等都被装在了一个塑料外壳内，一般情况下我们不考虑其维修，它比较适用于作支路的保护开关，其大部分采用的是手动操作。

5. All parts of the frame circuit breaker are installed in an insulated metal frame, which is usually open, and can be equipped with a variety of accessories. It is also convenient to replace contacts and components, which are mostly used in the main switch at the power end. The outer contact of the grounding wire terminal, arc extinguishing chamber, release and operating mechanism of the molded case circuit breaker are installed in a plastic shell. Generally, we do not consider its maintenance. It is more suitable for the protection switch of the branch, and most of it adopts manual operation.