UD2-3NUN-L

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Signal relays are electromechanical devices designed to automatically open or close electrical circuits in response to an electronic signal. Here we introduce a notable member of this family, the UD2-3NUN-L, with its application field and working principle.

Overview of UD2-3NUN-L

UD2-3NUN-L is a high-performance, low-cost miniature signal relay with a 2 Amp rating and a variety of features, which makes it suitable for a wide range of applications. It has an operating voltage of 12-48V DC and an endurance of more than 100 million operations. It is also RoHS compliant and available in both SMT and through-hole packages.

Application Field

Given its small size, high efficiency and low cost, Ud2-3NUN-L is ideally suited for applications with miniature signal relays. It is widely used in automotive, broadcast, communications, industrial control, medical, security, and test & measurement.

In the automotive area, its small size allows it to be used in small spaces, giving it the potential in applications such as in car audio systems and other automotive control systems. Additionally, it can be used in braking systems to open and close switches in response to signals from the brake assembly, so that the brakes can be released.

In the communications industry, UD2-3NUN-L is used in direct and indirect dialing systems for switching telephone lines and other data communications lines. Industrial control engineers also use these relays in automation control and process control systems for both local and remote switching.

Working Principle

UD2-3NUN-L uses a unique combination of two parts to achieve its switching functionalities. The first is the relay coil, which consists of a disk-shaped bobbin with an electrical coil wound on it in the middle. When an electrical current is applied to the coil, it produces a magnet, which acts as the relay’s armature. This armature is connected to a set of contacts, which then open and close in response to the magnetic force. The relay contacts then activate the second part of the relay: the contactor. The contactor is a set of conductors that control the flow of electricity between two points. When the relay\'s contacts open, the contactor prevents any current from flowing. Conversely, when the contacts close, electricity can flow through the contactor.

Overall, the combination of these two parts allows for UD2-3NUN-L to be used in a variety of applications, making it one of the most reliable and cost-effective signal relays currently available.

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