7-1617786-5

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Power Relays, Over 2 Amps

Power relays allow electric current and voltage to be switched on and off at will with the use of electromagnetic forces. Typical applications of a power relay are for controlling motors, lights, and other electronic loads that draw more than 2 amps of current. When the desired number of amps is exceeded, power relays become increasingly important as they are able to handle the added power requirements. The 7-1617786-5 is an example of a power relay suited to such applications. This article will discuss the application field and working principle of the 7-1617786-5.

Application Field

The 7-1617786-5 is an electromagnetic power relay designed for switching power on and off for electronic loads that exceed 2 amps of current. Its primary application field is for controlling large motors or electric pumps where it is necessary to switch power off and on for safety and performance reasons. This power relay is capable of switching an impressive 8 amperes of current, making it suitable for larger loads. Additionally, it is suitable for applications in wet or dusty environments due to its IP54 rated dust and water resistant enclosure.

Working Principle

The 7-1617786-5 uses a simple yet effective working principle when it comes to switching on and off power. Whenever the required current exceeds two amps, an electromagnetic force activates the relay. This causes the contacts inside the relay to close and allows current to flow through it, enabling the necessary switching action. When the current exceeds the specified number of amps, typically 8 amps e for this model, the contacts inside the relay are opened, cutting off the power. This type of system is known as an "off-delay" system and is capable of opening the contacts to cut off power even if a load it is controlling is stuck in the on position.

The 7-1617786-5 power relay also features an auxiliary contact that can be used as an indication of the relay\'s status. This auxiliary contact remains open when the power is on, and closes when the power is off. This is useful for monitoring the status of larger motor loads that may be more difficult to observe simply with the naked eye.

Conclusion

The 7-1617786-5 power relay is an ideal choice for applications that require switching larger loads of 8 amperes. Its rugged IP54 rated construction makes it suitable for wet or dusty environments, and its "off-delay" system ensures that power is always safely and reliably switched on and off. The auxiliary contact allows for the status of the relay to be monitored easily, making it a great choice for applications where power must be safely switched off.

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