Protection relay is an indispensable safety device in modern power system. This article will introduce in detail the working principle and type of protection relay and its important role in various application scenarios to help you choose the most suitable products and ensure the stable operation of the electrical system.

Understand the key role of protection relay in power system and its type selection. Whether it is household circuit or industrial equipment, suitable protective relay can effectively prevent the risk of short circuit and overload, and ensure your property and personal safety. This article explains how to select the protection relay that best suits your needs.

Understand the important role of protective relays and how to improve the safety performance of equipment through precise selection and correct installation. This article analyzes the working principle, application scenarios and purchasing skills of the protection relay in detail to help you build a more stable power system.