How do latching switches work

A variation uses a permanent magnet that produces part of the force required to close the contact; the coil supplies sufficient force to move the contact open or closed by aiding or opposing the field of the permanent magnet.

Latching relays. Latching relays A latching relay is a two-position electrically-actuated switch. It can be operated manually, remotely, from several control points, or by impulses. Latching relays are most frequently used for the control of lighting circuits in various public places with multiple control points.

The latching relay closes or opens its contact every time a mains voltage pulse is applied to its coil terminals. The pulse is generated by depressing one of the pushbuttons. All the pushbuttons are connected in parallel. It is well appreciated in corridors, staircases, and large rooms.

Using latching relays instead of contactors in lighting circuits no coil needs to be powered, with a saving of around 2W per relay? The global energy saving for each relay is greater than 5 kWh a year for average use of 8 hours a day. The latching relays permit, moreover, the control of the lighting with an unlimited number of pushbuttons.

The most common known application for a latching switch is a light switch. Once the light switch is compressed once, it requires no more operation for the lights to stay on. Other examples include computers, central heating devices, television, hair dryer and lots of other electrical devices. Air switches — our air switch has been used as latching switches in spa baths to turn the bubbles on and off. Isaiah David is a freelance writer and musician living in Portland, Ore. He has over five years experience as a professional writer and has been published on various online outlets.

He holds a degree in creative writing from the University of Michigan. How Does a Latching Relay Work? Latching Relay Definition A relay is a type of electromechanical switch used in power supplies, counting systems and many other applications. How Magnetic Switches Work. What Are the Functions of a Magnetic Contactor? Parts of a Motor.