How does latching relay work

Applying a pulse signal to the resetting coil, in contrast, causes the contacts to return to open state and remain at that state.

The one coil latching type is a type of latching relay that has one common coil used for both setting and resetting operations. Applying pulse signals in reverse polarity with each other to the common coil puts the contacts in a closed state and an open state and keeps it at each state. A variation uses a permanent magnet that produces part of the force required to close the contact; the coil supplies sufficient force to move the contact open or closed by aiding or opposing the field of the permanent magnet.

Latching relays. Latching relays A latching relay is a two-position electrically-actuated switch. Latching Relay Definition A relay is a type of electromechanical switch used in power supplies, counting systems and many other applications.

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Parts of a Motor. How to Wire a Lighting Contactor. How Hydraulic Pilot Valves Work. It is well appreciated in corridors, staircases, and large rooms. Using latching relays instead of contactors in lighting circuits no coil needs to be powered, with a saving of around 2W per relay?

The global energy saving for each relay is greater than 5 kWh a year for average use of 8 hours a day. The latching relays permit, moreover, the control of the lighting with an unlimited number of pushbuttons.

The realization of the circuit with parallel keys is very simple! This makes it particularly suitable to be used in more complex lighting plants, when, for example, the sequential control of the utilities via a single circuit of pushbuttons is required.

These devices can be used to realize innovative solutions, ensuring the maximum saving of energy, thanks to their design philosophy, which consumes only in the brief period of the duration of the impulse control. You can reset a latching relay using the actuator. The latching relays are equipped with a manual actuator and a selector that cut off the coil supply putting the system out of service, for example in the case of maintenance.