2. The difference between the action speed of windproof fuses and circuit breakers: the fusing action speed of fuses can reach the microsecond (μs) level, which means that its speed is much faster than that of circuit breakers. This ability is usually It is more suitable for installation and use in situations with similar rapid cutting requirements. The tripping speed of the circuit breaker is at the millisecond (ms) level, which can be seen to be much slower than that of the fuse, so it can only be used in situations where the cutting speed requirements are not very high.
3. The difference in usage times between windproof fuses and circuit breakers: fuses must be replaced after performing fault protection once and the melt has been blown. On the contrary, circuit breakers can be replaced in most cases. Reused again. But generally speaking, the effect of breaking the circuit is stronger and more sufficient than that of the circuit breaker. Generally speaking, the circuit breaker is installed on the branch line, while the fuse is installed on the main line in most cases to play a secondary role. level protection.
4. The difference between the working principles of windproof fuses and circuit breakers: First of all, the working principle of fuses is mainly based on the thermal effect of current. When the current exceeds a fixed value (here you need to know that different fuses have different fixed values), the The internal fuse will cause and blow to break the circuit and protect the equipment from being burned out by large currents. There are many types of circuit breakers and their structural principles are also different. Usually, it is because the current is too large that the trip coil is excited and prompts the circuit breaker to perform a tripping action. Of course, the circuit breaker can not only be operated automatically but also manually. Control the opening and closing action of the circuit breaker.
