HE721A1250

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Reed relays are electric switches used to control electrical devices. They are made up of two components: a controlling module and a contact forming the switch itself. The reed relay is formed from a reed switch, which is a type of switch consisting of fine metal wire contacts sealed in a tube filled with an inert gas. Completion of the circuit is enabled when the switch is activated by a magnetic field created by an external coil.

The HE721A1250 Reed Relay is a common type of reed relay used in a wide range of applications. It is a single-pole, double-throw (SPDT) reed relay featuring a single contact block with both normally open (NO) and normally closed (NC) contacts, with a maximum switching current of 12A. This type of reed relay is typically used for general purpose switching in industrial automation, process control, security, and home automation systems.

The HE721A1250 is primarily composed of the contactor, a coil that generates the magnetic field, an electric capacitor, and an insulating tube. The electric capacitor is used to reduce the voltage that is passed to the contactor, thus reducing the amount of current being passed to the relay. The insulating tube keeps the contactor and coil isolated from the coil, allowing for precise control over the switching action.

The working principle of a reed relay is based on the principle of magnetism. The magnetic field generated by the coil attracts the contactor and closes the circuit. The contactor then remains in a closed position until the magnetic field is reduced or removed. When the coil is de-energized, the magnetic field shrinks and the contactor returns to its original position, thus re-opening the contacts.

The HE721A1250 Reed Relay is ideal for applications which require either single-pole or double-pole switching solutions. Its small form factor also makes it suitable for applications with tight space constraints. It is also very resistant to failure, with an MTBF (Mean Time Before Failure) of greater than 1,000,000 operations. This ensures consistent operation and a long life for the relay.

The HE721A1250 is widely used in a variety of applications such as signal and power switches in security and surveillance, process control systems, and home automation. The reed relay is also used in automotive, computer, HVAC, and telecom applications. Its small form factor and robust construction make it an ideal choice for applications with tight space constraints.

The HE721A1250 reed relay is a popular choice for its reliable, robust, and high-performance switching action. It is often used for filtering, motor control, switching, and other industrial applications where a range of switching operations are required. Its long life and high switching current also makes it a cost-effective solution for applications which require a highly reliable relay.

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