Views: 0 Author: Site Editor Publish Time: 2022-06-21 Origin: Site
Molded case circuit breakers are mostly operated manually, and electrical switching can be chosen for high power. Due to the application of electronic overcurrent triggers, Molded case circuit breakers can also be divided into two types: Class A and Class B. Class B has good three-stage protection properties, but due to price factors, the use of thermal magnetic triggers Class A products have a higher market share.
What is the workflow of a Molded case circuit breaker?
When do we need Molded case circuit breakers?
What should be considered when using Molded case circuit breakers?
The function of the compact power switch is that in the event of a short circuit, the magnetic field generated by the large current (generally 10–12 times) overcomes the reaction spring, the trigger pulls the actuation mechanism and the switch immediately triggers. When overloaded, the current becomes larger, heat generation increases, and the bimetal sheet deforms to a certain degree to promote the action of the mechanism (the greater the current, the shorter the action time). Meanwhile, there are electronic Molded case circuit breakers that record the current of each phase via the transformer and compare it with the set value. If the current is abnormal, the microprocessor sends a signal so that the electronic trigger drives the actuation mechanism to act.
There are different rated currents such as plastic enclosure switches, and those above 10 A are mainly used in industry. In industrial power supply circuits, it is difficult to use fuses for circuit protection when the importance of the circuit is slightly higher, or the protective properties of fuses cannot be met. Molded case circuit breakers can be used when the circuit requires it. Molded case circuit breakers are circuit breakers commonly used in factories. If the circuit capacity is greater than 200 kW, it is recommended not to use a mold housing switch, but an air frame switch.
When using Molded case circuit breakers, we also have to pay attention to atmospheric conditions. When using, we need to ensure that the humidity at an air temperature of 40° is less than 50%. pay attention to the high relative humidity of the environment with low temperature; We also need to note that condensation occurs on the product when the average monthly humidity is 90%.
Finally, the pollution limit is generally 3-Poland.
The function of the compact power switch is to switch on and off the rated current in the connected circuit and guide it. In addition, it can also protect other electrical devices by breaking the circuit in case of overload. It has good switching ability and strong current limiting characteristics.
To ensure the product quality, Zhejiang Shilong Electric Technology Co., Ltd. is constantly introducing the most advanced products and technologies into the design, production and quality control process. According to the requirements of modern enterprise management system, the company has standardized and improved the quality management system and passed ISO9001:2000 quality system certificate as well as CCC, CE, CB and TÜV certificates. Busbar circuit breakers are the characteristic products of our company, which have been independently developed.
