The structure of Magnetic Latching Relay
Magnetic latching relays are divided into single-phase and three-phase. According to relevant information, the maximum contact conversion current of magnetic latching relays on the market can reach 150A.The control coil voltage is divided into DC9V DC12V and other general electrical appliances life 10000 times; Mechanical life 1000000 times;The contact voltage drop of the contact is 100mV. Therefore, it has the characteristics of power saving, stable, small volume, large carrying capacity and superior performance than the general electromagnetic relays. This type of Bistable magnetic latching relay is one of the most common accessories in new energy, solar panels, power grids, smart meters and other products. Today, let's take a look at the internal structure of the product.
Magnetic latching relay is a new type of relay that uses magnetic principle to control the action of circuit opening and closing. Its normally open or normally closed state is completely obtained from the action of permanent magnetic steel, and the switch state is completed by triggering a pulse electrical signal of a certain width.
The structure of magnetic latching relay is mainly divided into two layers, the upper layer is the electromagnetic system, the lower layer is the contact system. The electromagnetic system adopts flat direct moving magnetic latching circuit system, which comprises a magnet, coil, armature, core ,mounting plate, the magnet is arranged in the center of the mounting plate, the magnet is installed on both sides of the coil, the coil is provided with a U-shaped iron core above the coil, the armature is in the core of each other to form a ring structure, and can be controlled by the magnetic field.
As long as a certain voltage is added to both ends of the coil, the coil will flow through a certain amount of current, resulting in electromagnetic effect, which drives the armature moving contact and static contact (normally open contact) pull.
When the coil is energized and disconnected, the contact will remain the previous state. For normally open and normally closed contacts of magnetic latching relays, they can be distinguished as follows: NO-Stay “disconnection states” when no power. NC- stay “connection states” when no no power.
The above is the introduction of some of the internal structure of the magnetic latching relay. For more details, please click https://www.ivy-metering.com
