What is the difference between miniature circuit breaker and molded case circuit breaker?

作为短路器的一种，小型断路器和塑壳断路器在现在的生活乃至工业中都得到了广泛的应用，那么两者有什么区别呢?

As a kind of short circuit breaker, miniature circuit breaker and molded case circuit breaker have been widely used in life and even industry. What is the difference between them?

对于小型断路器和塑壳断路器都有一个清晰的了解，下面给大家详细介绍。

I have a clear understanding of miniature circuit breaker and molded case circuit breaker, which will be introduced in detail below.

小型断路器又称微型断路器，适用于交流50/60Hz额定电压230/400V，额定电流至63A线路的过载和短路保护之用，也可以在正常情况下作为线路的不频繁操作转换之用。

Miniature circuit breaker, also known as miniature circuit breaker, is suitable for overload and short circuit protection of AC 50 / 60Hz, rated voltage 230 / 400V and rated current up to 63A lines, and can also be used for infrequent operation and conversion of lines under normal conditions.

小型断路器主要用于工业、商业、高层和民用住宅等各种场所。

Miniature circuit breakers are mainly used in various places such as industry, commerce, high-rise and civil residence.

塑壳断路器能够在电流超过跳脱设定后自动切断电流。塑壳指的是用塑料绝缘体来作为装置的外壳，用来隔离导体之间以及接地金属部分。

The molded case circuit breaker can automatically cut off the current when the current exceeds the tripping setting. Plastic shell refers to the use of plastic insulator as the shell of the device, which is used to isolate between conductors and grounded metal parts.

小型断路器和塑壳断路器有什么区别：

What is the difference between miniature circuit breaker and molded case circuit breaker:

1、塑壳断路器DCMIL-630型(附件)警声模块能接入较粗导线，如35平方以上的。小型断路器只适合接10平方以下的导线。

1. Dcmil-630 (accessory) alarm sound module of molded case circuit breaker can be connected with thicker wires, such as those with an area of more than 35 square meters. Miniature circuit breakers are only suitable for connecting wires less than 10 square meters.

2、塑壳断路器塑壳断路器端头用螺母联接，容易压紧，接触良好。小型断路器采用较小的压紧端子端子DJ623-8，且只能用螺丝刀拧紧，力矩不够，不容易压紧，接触不太好。

2. Molded case circuit breaker the end of molded case circuit breaker is connected with nut, which is easy to compress and has good contact. The miniature circuit breaker adopts a smaller compression terminal dj623-8, which can only be tightened with a screwdriver. The torque is not enough, it is not easy to compress and the contact is not very good.

3、塑壳断路器对过流和短路采用两套装置分别保护，过流保护动作值可以人工调整。小型断路器对过流和短路共用一套装置，电流不可调。

3. Molded case circuit breaker adopts two sets of devices to protect overcurrent and short circuit respectively, and the action value of overcurrent protection can be adjusted manually. The miniature circuit breaker shares a set of device for overcurrent and short circuit, and the current is not adjustable.

4、塑壳断路器相间距离大，且有灭弧罩，灭弧能力强，能承受更大的短路电流，还不易引发相间短路。寿命也长。

4. The molded case circuit breaker has large phase to phase distance and arc extinguishing cover, which has strong arc extinguishing ability, can withstand greater short-circuit current and is not easy to cause phase to phase short circuit. Long life.

5、小型断路器动作灵敏度比塑壳断路器高。

5. The action sensitivity of miniature circuit breaker is higher than that of molded case circuit breaker.