lukitusrele

A lukitusrele, or latching relay in English, is an electromechanical switch that maintains its contact position even after the actuating control signal has been removed. This "latched" state is achieved through a mechanical locking mechanism within the relay. Unlike standard relays that require continuous power to remain energized, a lukitusrele operates on a pulse basis.

There are typically two common types of lukitusrele designs. One type uses a single coil and requires a pulse of current in one direction to set the contacts and a pulse of current in the opposite direction to reset them. Another common design utilizes two coils: a "set" coil to activate the relay and a "reset" coil to deactivate it. When a pulse is applied to the appropriate coil, the internal mechanism switches the contacts and locks them in place. Power is only needed during the brief switching action.

The primary advantage of a lukitusrele is its power-saving capability. Since it doesn't consume power to hold its state, it is ideal for battery-powered applications or situations where energy efficiency is critical. They are also useful for maintaining a circuit's status through power interruptions. Applications for lukitusrele can be found in various fields, including industrial automation, building control systems, and electrical signaling where a persistent state is required without continuous energy expenditure.