Latching relays have become increasingly popular in power systems due to their unique ability to maintain a switch position even when the power supply is interrupted. Unlike traditional relays, which require a continuous supply of power to maintain their states, latching relays, also known as bistable relays, are designed to “latch” or “lock” into a given position after being activated. This feature is particularly beneficial for energy-efficient operation and robust system control, making latching relays a crucial component in modern power systems.
What is a Latching Relay? A latching relay is a type of electromechanical relay that has two stable states—typically an open and a closed state—and can hold one of these states without requiring continuous power. After receiving a triggering signal, the relay changes its state and remains there even after the power is turned off. To switch to the opposite state, a separate control signal is needed. This self-holding feature makes latching relays particularly useful in applications where minimizing power consumption is essential or where an uninterrupted state must be maintained across power cycles.