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What is a magnetic latching relay

                       
Update:17-09-2020
Summary:

Like other electromagnetic relays, the magnetic latchin […]

Like other electromagnetic relays, the magnetic latching relay is also an automatic switch, which automatically turns on and off the circuit. It is a bistable relay that relies on its own permanent magnet to keep the contacts open or closed.

Magnetic latching relays are relays that use permanent magnets or parts with high remanence characteristics to keep the armature of the electromagnetic relay in the position when the coil is energized after the coil is disconnected. According to the definition, the biggest difference between magnetic latching relays and general relays is that the armature does not need to be energized during this period, while other relays need to be continuously powered. Therefore, the biggest advantage of magnetic latching relays is power saving! Of course, the price is relatively high.

Matters needing attention in the use of magnetic latching relay:

60A three-phase meter relay

Avoid energizing both coils at the same time (if energizing at the same time, the relay is in the set state). The reset voltage must not exceed 150% of the rated voltage, otherwise it may be reset. When selecting spare parts, as long as the installation position, coil voltage and contact current can meet the requirements.

The use of the relay should meet the various parameter ranges listed in the product manual as far as possible. The rated load and life are a reference value and will vary greatly according to different environmental factors, load properties and types, so it is best to confirm in actual or simulated actual use. Try to use rectangular wave control for DC relays, and use sine wave control for AC relays.