4-1617520-4

Series:	*
Part Status:	Active

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Signal Relays, Up to 2 Amps

Signal relays are electric relays that are used to interface between digital input signals and power systems or other higher power electronics. Such a device requires complex circuitry in order to accurately perform its intended purpose. The 4-1617520-4 is an example of one such device; in this article, we’ll take a closer look at its application field and working principle.

Applications

The 4-1617520-4 is a general-purpose signal relay, with a switching current rating of up to 2 amps, designed for applications in the automotive, military, aerospace, medical, consumer, and industrial sectors. Its typical uses include switching between two circuits; controlling a motor to activate, deactivate, or reverse its direction; and supplying power to components such as sensors, solenoids, and actuators.

Features

The 4-1617520-4 signal relay offers several useful features that make it appealing to use in a wide variety of applications. It has a single pole/double throw (SPDT) contact type, with contacts manufactured using silver alloy contacts for improved conductivity and reliability. In addition, the device also features a built-in 4-kV dielectric strength that prevents electrical breakdown and ensures long-term, reliable operation. The relay also comes with an isolated contact-lock and dust cover that protect the contact area from dirt and other environmental contaminants, as well as a varistor that improves protection against transient voltages.

Working Principle

The 4-1617520-4 is actuated by an electromagnetic field generated by an AC or DC coil. The coil current is provided with an electric source that can be switched on and off at any time. When the coil is energized, it generates a magnetic field, which in turn attracts the movable contact of the relay to the normally closed contact. When the current is turned off, the contact springs back to its original position.Depending on the initial configuration of the contacts, this movement of the contact can either open or close an electronic circuit. This switching can be used to control multiple circuits, depending on the application. For example, this relay could be used to switch between two power supplies for a motor, allowing the motor to switch its power source in order to reverse its direction.

Conclusion

The 4-1617520-4 is a general-purpose signal relay with a switching current rating of up to 2 amps, making it a good choice for automotive, military, aerospace, medical, consumer, and industrial applications. The device features silver alloy contacts, 4-kV dielectric strength, isolated contact-lock and dust cover, and varistor for enhanced reliability and operation. Its operation is based on an electromagnetic field generated by a coil, which moves a contact to either open or close an electronic circuit. With its many features and applications, the 4-1617520-4 is an ideal choice for controlling high-current switched circuits.

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