Relays are fundamental components in electrical and electronic control systems, acting as switches that allow a low-power signal to control a high-power circuit. They serve as the backbone of countless applications, from automotive systems to industrial automation. Understanding the broad range of relay products available is essential for anyone involved in designing or maintaining electrical systems. This article will explore the various types of relays typically featured in a relay product catalog, providing insight into their key characteristics, applications, and selection criteria.
What is a Relay? At its core, a relay is an electrically operated switch. When a small electrical signal is applied to the relay’s control coil, it creates a magnetic field that triggers the opening or closing of contacts. This enables the relay to control larger currents or voltages in circuits that are often beyond the control of a typical switch. The simplicity of its design and the versatility of its application make the relay an essential component in electrical control. Types of Relays Found in a Product Catalog A well-organized relay product catalog typically categorizes relays based on their design, application, and electrical characteristics. The most common types of relays include：