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Power Relays, Over 2 Amps - G7L-1A-P-CB-AC100/120 Application Field and Working Principle

Richardson Electronics is a global leader in power relays, offering a wide range of products. The G7L-1A-P-CB-AC100/120 is one of their top-selling relays in the power-over-2-amps category. This device is designed for applications requiring higher power switching and can handle currents of up to 100/120A. This article will explore the application field and working principle of this fast-acting and robust relay.

Application Field

The G7L-1A-P-CB-AC100/120 relay is mainly used to control the energizing and de-energizing of motors or other loads, and is typically used in industrial applications such as HVAC, controllers, pumps, and motor starters. This device can also be used in safety systems, where control of potentially hazardous machinery or processes is required. Additionally, this device can also be employed in more sensitive machines, such as electro-mechanical valve, positioning devices, and in medical equipment. This device can handle both AC and DC circuits and is suitable for applications up to 120A.

Working Principle

The G7L-1A-P-CB-AC100/120 is a single-pole, double-throw (SPDT) relay, A SPDT relay operates similar to a light switch. When the current is off, the working coil is off, and the contacts between the two energized poles are in a normally closed position. When the working coil is switched on, an electromagnetic current is generated, and the two poles are in a normally open position. This change will remain until the electromagnetic field is shut off.

The G7L-1A-P-CB-AC100/120 is designed with a fast-reacting electromagnetic field. This field is generated by the internal energizing coil, which is controlled by an external power source. When this external power source is applied to the relay’s working coil, the internal electromagnetic field is generated and the contact moves from the normally closed position to the normally open position. The time taken for this switching to occur is known as the ‘switching time’.

The G7L-1A-P-CB-AC100/120 also features an optional built-in timer, which allows the switching of the device to occur after a specified period of time. By using the timer in conjunction with an external power source, more complex switching patterns can be created with the G7L-1A-P-CB-AC100/120.

Conclusion

The G7L-1A-P-CB-AC100/120 is a fast-acting and robust SPDT relay from Richardson Electronics. It is designed for applications which require higher power switching and can handle currents of up to 100/120A. This device is commonly used in industrial settings such as HVAC, controllers, pumps, motor starters, safety systems, and electro-mechanical valve, positioning devices. This device can also be used in more sensitive machines such as medical equipment. Additionally, the G7L-1A-P-CB-AC100/120 also features an optional built-in timer for more complex switching patterns.

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