G2R-2B4DC12

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Power Relays, Over 2 Amps

Power relays are used in many industries as an electrical switching device that is controlled by an electronic signal. In such cases, they can be used in place of mechanical breakers or contactors or even electromagnetically actuated switches. One type of power relay is the G2R-2B4DC12 manufactured by Omron. This type of relay was designed for both high current switching applications of up to 40 amps and moderate current switching applications of up to 10 amps. Referring to the datasheet of G2R-2 usually gives the user a fair understanding of its application field and working principle.

Application Field

The G2R-2B4DC12 is used in a wide variety of industries, including automotive, medical and consumer products. It is especially suited for high-current applications such as motor starting circuits, electric heaters, lighting systems and other applications where high current is required. It is also suitable for moderate current applications such as signal circuits and power switching. As a power relay that is designed to switch on and off on a regular basis, it can be used in applications where safety is critical, such as medical devices and elevators.

Working Principle

The operation of a power relay is very simple. Basically, the relay utilizes a magnetic coil (or ‘nail’) that when energized creates a magnetic field. This magnetic field is then used to physically move a contact within the relay, thereby switching the circuit open and closed. In the case of the G2R-2B4DC12, it uses a dual-coil design that allows it to switch on and off without any delay.

The way in which the relay operates depends on the applied voltage. If the voltage is lower than the specified trigger voltage of the relay, then the magnetic field will not be strong enough to move the contact and the circuit will remain closed. If the voltage applied is higher than the specified trigger voltage, then the magnetic field will be strong enough to move the contact and open or close the circuit.

When the voltage is higher than the trigger voltage, the power relay will switch from its rest position to the on position. This will cause the contact to close and allow current to flow in the circuit. Once the current is flowing, the relay will stay in its on position until the current has stopped completely. At this point, the contact will switch back to its rest position and the circuit will be open. This is how the G2R-2B4DC12 works.

Conclusion

The G2R-2B4DC12 is a power relay designed for high current and moderate current applications, and is useful in a variety of industries. Its working principle is based on the use of a magnetic field to move the contact within the relay, allowing it to open or close a given circuit. Although it is a simple device, it performs an important task in many different applications, such as motor starting circuits, electric heaters, lighting systems and medical devices.

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