Electronic products are often exposed to various transient voltage surges, such as those caused by lightning or static electricity, which can lead to circuit malfunctions or damage. Correct selection and use of surge protection devices (SPDs) are critical to safeguarding equipment and ensuring personal safety.

Surge protectors are critical components for ensuring the stable operation of power distribution systems across various electrical environments. Lightning strikes and transient voltage spikes can reach several thousand volts, potentially causing irreparable damage to equipment. Below, we explore how to select surge protectors (SPDs) for different scenarios.

Miniature circuit breaker is a switching appliance for connection, carrying and breaking, referred to as micro break or MCB (Miniature Circuit Breaker).Its main function is to switch the circuit, and can open the circuit when the circuit current exceeds the limit current.Typically, a miniature circuit breaker can be replaced by a disconnect switch in series with a matching fuse, the only difference being that when the fuse blows, the core needs to be replaced; whereas when the micro break is overloaded and opened, the switch only needs to be pushed up to recover....

Low-voltage AC contactors are one of the most commonly used electrical components in power control circuits, and many electrical professionals are familiar with them. However, choosing the right type of contactor for specific applications can still be confusing. Today, we will explain how to select low-voltage AC contactors correctly by examining their structure, principles, and functions.