The difference between dual-coil magnetic latching relay and

Magnetic latching relay is an automatic switch, like other electromagnetic relays, it automatically turns on and off the circuit. The difference is that the normally closed or normally open state of the magnetic latching relay is completely dependent on the function of permanent magnets, and its switching state is maintained by passing positive and volt DC voltage to the coil.

The magnetic latching relay only needs a forward current to be permanently closed and does not need to maintain voltage. To release, a reverse voltage must be added. There is also a dual-coil product. One coil is dedicated for positive voltage pull-in, and the other is used for reverse voltage release.

The self-holding relay has two sets of coils, one set for action and one set for holding. Self-holding relay: The holding coil has a smaller current than the starting coil. After the relay operates, the holding coil is supplied with power through the moving contact or electronic circuit to keep the relay in the pull-in state.