2952855

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Power Relays, Over 2 Amps

Power relays are sometimes referred to as contactors, and they are devices used to operate an electrical circuit by an electrically operated switch. Although relays are primarily used for signal and low power control circuits, they are also used in higher currents such as in electric motor switching, contactors, and current limiting circuits. Generally, a power relay should be capable of switching currents of 2 Amperes (A) or more.

A relay is composed of an electromagnetically operated set of “switch contacts”. When the coil is energized, a magnetic field is created that attracts an armature, or plunger, causing it to move and close the contacts. When the coil is de-energized, the armature is released and the contacts open. This is why these devices are referred to as “electromagnetic switches”. The following components are typically found in a single-pole, single-throw relay: coil, armature, usually two switch contacts, internal & external conductors, a release/ return spring, and a california magnet.

2952855 power relays are commonly used at higher currents starting from 2 Amperes. These relays are typically designed for 100 V to 350 V nominal voltage ranges and are available with single pole or double pole configuration. They are available in gasket sealed or dusttight packages to provide higher protection against dust, moisture, and other contaminants. Some of the applications these relays can be used in include motor switches, lighting controls, power control systems, and HVAC/R systems.

The principle of operation of a 2952855 power relay is similar to that of a single-pole switch. When a voltage is applied to the coil, the relay will become energized and the armature gets attracted to the electromagnet, which causes the spring-loaded contacts to close and complete the circuit. When the voltage is removed, the electromagnet loses its magnetic field and the armature is released, which opens the contacts and lets the circuit become open. This is the typical mechanism for these types of relays.

2952855 power relays are reliable, consistent, and easy to use electrical components that offer a convenient way to control high current applications. They are used in a variety of applications including motor switching, lighting control, power control systems, HVAC/R systems, and many more. When choosing the right relay for your applications, it is important to consider factors such as the size, voltage rating, amperage rating, switching method, and operating temperature. With the help of these relays, it is easy to control high current applications with ease.

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