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A latching relay can maintain the contact even if the voltage applied to the relay coil is turned off. Latching relays can be either single-winding or double-winding.

The holding force (coercive force) of a latching relay may decrease over time, and the set state may be released due to a decrease in the holding force. The decay rate with respect to the elapsed time depends on the surrounding environment. Refer to “Attenuation of holding force” data.

Relays are available in flux-resistant, plastic-sealed, and closed types. The sealed relay is plastic sealed.

It is possible that a release failure may have been caused by factors of the relay and the circuit that drives the relay?

The operating voltage is such that the relay will always operate when a voltage higher than that value is applied, and the return voltage is such that the relay will always release when a voltage lower than that value is applied.

If silicone gas enters the relay, it may cause contact failure.

Do not use a dropped relay as its characteristics may have been degraded.

Do not switch the motor between forward and backward rotations using one relay.

The back electromotive force generated by the coil when it’s turned off may cause damage to the semiconductor or device malfunction. As a countermeasure, add a surge-absorbing circuit to both ends of the coil. If a surge-absorbing circuit is added, the relay release time will be longer. Check the circuit before use.

If the contact does not operate (conduct electricity) even though voltage is applied to the coil, it is possible that the relay drive system (coil) is defective or the contact that opens and closes the load is defective.