990281

990281 Application Field and Working Principle

The 990281 terminal blocks are designed for applications where screw-in connection is required. The terminal blocks can be used to screw onto a PCB board or onto a panel. The terminal blocks are compatible with both pre-assembled and in-line cables. They offer a connection between individual wires and components. The terminal blocks are available in both single- and double-pole designs, offering high electrical performance and exceptional flexibility.

Application Field

The 990281 terminal blocks are commonly used in industrial and commercial applications, such as automotive, building automation, factory automation, telecommunications, medical and process control. They are especially ideal for applications that require high power transfer, including motor control systems and power converters. Furthermore, they are suitable for applications with low-voltage up to 25A, and are often used in control panels, switchboards and outdoor installations that require reliable and safe connections.

Working Principle

The terminal block consists of spring-loaded contacts which enable the connection by screwing a securing nut that tightens the spring. This provides a pressure contact between the cable and the conductive contact of the terminal block. The contacts are constructed from high conductivity copper alloy and plated with tin to ensure a safe and secure contact with the cable conductor. The contact pin of the terminal block is designed to prevent accidental disconnection or short circuit of the cables.

Safety Features

The 990281 terminal blocks offer a range of safety features, such as a disconnectable protection collar, a dust proof sleeve to avoid dirt ingress, and a contact cover that prevents accidental contact with live parts. Additionally, the terminals are colour coded in accordance with DIN EN 600 correspondingly to ensure easy and intuitive live wire identification. Lastly, the terminal blocks are in accordance with RoHS, CCC and VDE standards, providing the assurance of quality and safety.

Conclusion

The 990281 terminal blocks are designed for applications where secure and reliable wiring is essential. They are well-suited to a variety of applications, including industrial and commercial environments. The terminal blocks are available in both single- and double-pole designs, offering high electrical performance and excellent flexibility. Furthermore, they come with a range of safety features, as well as the assurance of quality and safety provided by their RoHS, CCC and VDE standards compliance.