Magnetic keep using magnetic principle to control the circuit relay is opened and a new type of relay, cutting off their normally open or normally closed state completely from the role of permanent magnets, with a certain width of pulse electrical signal trigger finishes the transformation of switch state, with low power consumption, high sensitivity, small volume and touch the contacts as well as good stability, widely used in the field of aviation, satellite, etc. Magnetic latching relay is to introduce the internal rare earth magnetic steel into the magnetic circuit, so that it has a strong magnetic latching ability, which can be operated under the action of pulse. And in the case of no power consumption to maintain in a certain position for a long time, that is, to maintain the state of the last pulse instruction, with memory and bistable functions.

Analysis of the advantages of magnetic latching relay:
(1) high precision: the production of magnetic relay is on the basis of the current law adopts the secondary automatic temperature compensation circuit structure design technology and optimization technology, according to the center and the principle of axial symmetry in the magnetic circuit, selects the latest materials and technology, guarantee the products in the practical application of theoretical calculation accuracy.
(2) the stability is good, the production of magnetic relay is in accordance with the principle of symmetry, the passage of air gap within the closed magnetic circuit with an even number times uniform distribution, the technical parameters of the hall, a strict matching, using a unique to residual magnetism circuit, improve the ability to resist outside magnetic interference, adopting secondary automatic temperature compensation technology, make the product is not affected by the environment temperature and change the offset. ,
(3) high reliability: the product due to the strict chose military level of components, the product may have improved greatly, the reliability of the contact of all electrical connection with strong connection, magnetic relay work power adopt independent power supply, various magnetic stick relay output signals are isolated transformation, noninterference, connected to all kinds of instruments, meters of cable choose double shielded cable, as long as one end of the reliable grounding, can effectively suppress interference lines introduced.
The role of magnetic latching relay:
1, expand the scope of control. For example, when the control signal of a multi-contact relay reaches a certain value, the multi-circuit can be switched on, off and connected at the same time according to different forms of contact groups.
2. Zoom in. For example, sensitive relays, intermediate relays, etc., can control a large power circuit with a very small amount of control.
3. Comprehensive signal. For example, when multiple control signals are input into the multi-winding relay in the prescribed form, the predetermined control effect can be achieved through comparison and synthesis.
4. Automatic, remote control and monitoring. For example, relays in automatic devices, together with other electrical appliances, can form a programmed control circuit for automatic operation.