78938-404HLF

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78938-404HLF is a miniature miniature relay manufactured by the Bunzl Corporation. It is mainly used in power electronic systems and telecommunications networks, but can also be used in industrial, medical, and automotive applications. The relay is small enough to fit into tight spaces, making it suitable for applications where space is limited.

The 78938-404HLF relay is controlled by a micro switch and is capable of switching electric loads and voltages such as 0.25amp / 24V. The contact rating of the relay is 5A / 120V with a contact resistance of less than 20 milliohms. The relay also includes a special back-EMF protection circuit to ensure the relay is not damaged by high inrush currents.

The 78938-404HLF relay consists of a contact block, an electromagnet, a coil, and a bracket. The contact block is an insulating material which houses the contacts, and can have multiple conducting paths. The electromagnet generates a magnetic field of force when the electric current passes through it, and activates the relay. The coil provides the necessary current and is also responsible for resetting the relay. The bracket holds the contact block, electromagnet, and coil in place.

The working principle of the 78938-404HLF relay is simple and straightforward. When an electric current passes through the electromagnet, it generates a magnetic field of force, which is then used to move the contact block towards the right, thus closing the contact and sending an electric current to the device that needs to be powered. When the electric current is removed from the electromagnet, the contact block moves back to its original position and the contact is opened, thus cutting off the electric current.

The 78938-404HLF relay is a versatile and compact miniature relay that can be used in a variety of important applications such as automotive, medical, and industrial. It is small enough to fit into tight spaces, making it an ideal choice for those applications where space is limited. The relay is also capable of providing reliable performance over a long period of time, ensuring that it will continue to work properly and never fail.

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