Latching Relays

What is a Latching Relay?

A latching relay is a two-position electrically-actuated switch. It is controlled by two momentary-acting switches or sensors, one that ‘sets’ the relay, and the other ‘resets’ the relay. The latching relay maintains its position after the actuating switch has been released, so it performs a basic memory function.
Even after the input voltage is interrupted, Latching Relays maintain its set or reset condition until it receives the next inverting input. It is also called a keep relay. There are two types of mechanisms for maintaining the set and reset conditions: a magnetic holding type and a mechanical holding type.

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