What is the function and working principle of plastic case circuit breakerCircuit breaker is also called device circuit breaker. It is suitable for protection switch of branch circuit. It can automatically cut off the current when the current exceeds the jump-off setting. It is used to isolate all parts of conductor and grounding metal part, which are sealed in plastic shell. Auxiliary contacts, undervoltage trippers and divider trippers are modularized. Because the structure is very compact, the plastic case circuit breaker can not be repaired basically, so it is generally not considered maintenance.

Service life of plastic case circuit breaker and matters needing attentionNowadays, plastic case circuit breakers are used more and more widely, which can be said to be a household name. People concerned should know that after some customers purchase this product, the service life is not guaranteed. It often breaks down after a period of time, which brings trouble of maintenance and replacement.

How to Select Molded Case Circuit BreakerThe selection of molded case circuit breaker can be divided into two aspects: parameter selection and type selection. Parameter selection includes: voltage, current, frequency, mechanical load, dynamic and thermal stable current and duration, voltage withstanding capacity, operation performance, environmental conditions, etc.

What factors should be considered when purchasing plastic case circuit breakerWith the increasing popularity of plastic case circuit breakers, many industries can use them, and families can also use them. But the plastic case circuit breaker is related to personal safety and can not be purchased casually. It's not like ordinary commodities. It doesn't like to throw them away. If the quality of plastic case circuit breaker is not up to standard, it will cause serious consequences.

Detailed Explanation of Common Faults of Molded Case Circuit BreakerPlastic case circuit breaker always has some faults in use. Here are some common faults to illustrate: 1. Frequent trips occur 1. The unbalanced three-phase load causes overload tripping of circuit breakers; find out the load condition and set the current reasonably.