{span 0} is widely used in life circuit breakers. for circuit breakers, it is a very common product, but when many people use it, it is easy to confuse frame circuit breakers with plastic case circuit breakers. there are some differences between them. here are some differences between frame circuit breaker and plastic case circuit breaker. from  to , first of all, frame circuit breaker is bigger in shape and size than frame circuit breaker, and the current level and sectional capacity of frame circuit breaker are bigger than plastic case circuit breaker, so the application occasions of frame circuit breaker and plastic case circuit breaker are different. the plastic case circuit breaker is applied to the lower

p from p from to plastic case circuit breaker, which has many kinds, compact structure and simple operation. the function is simple. in recent years, frame circuit breakers are developing in the direction of high performance, easy maintenance and networking. plastic case circuit breakers are the external contacts of grounding wire terminals, arc extinguishing chambers, trippers and operating mechanisms installed in a plastic case, generally without considering maintenance. they are suitable for protection switches of branch circuits. there are two kinds of over-current tripping devices: electromagnetic and electronic. generally, electromagnetic plastic case circuit breakers are non-selective circuit breakers. there are only two kinds of protection modes: long-delay and instantaneous. electronic plastic case circuit breakers have four protection functions: long-delay, short-delay, instantaneous and grounding fault. the new product of electronic plastic case circuit breaker also has regionally selective interlocking function. most plastic case circuit breakers are operated manually, and some are operated with motors. p from p from many people buy circuit breakers because they don't know the difference between the two, so they don't know which one to buy. the advantage of

plastic case circuit breaker is that the internal parts are placed in the insulation chamber to prevent short circuit, ensure that the arc wants to eject, and ensure the reliable segmentation of the outgoing system. frame circuit breaker adopts modular structure, each part is a complete and independent component, assembly type can be fixed with only a few screws, disassembly and assembly is convenient for maintenance

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