What is a magnetic latching relay?

Magnetic latching relay is a new type of relay developed in recent years. It is also an automatic switch. Like other electromagnetic relays, it can switch on and off the circuit automatically. The difference is that the normally closed or normally open state of magnetic latching relay completely depends on the action of permanent magnet, and the switching state of magnetic latching relay is triggered by a certain width of pulse electric signal.

Magnetic latching relay is divided into single-phase and three-phase. According to relevant information, the maximum contact switching current of magnetic latching relay on the market can reach 150A; the voltage of control coil is divided into dc9v, DC12V, etc. General electrical life is 10000 times; mechanical life is 1000000 times; contact voltage drop is less than 100mV. Therefore, it has the characteristics of power saving, stable performance, small size, large bearing capacity and superior performance than general electromagnetic relay.

Magnetic latching relay is mainly used in IC card prepayment meter and centralized meter reading system. In recent years, magnetic latching relay has been widely used in the composite switch of reactive power compensation device. In combination with thyristor, it has become the main switching device in reactive power compensation device to switch large current circuit. It can also be used in various household appliances and automatic control devices (such as lighting control system).