Difference Between AC & DC Contactors

Save

Alternating current (AC) and direct current (DC) contactors are found in many industrial motors, including many automobiles. The different contactors accomplish the same thing, but they do it in different ways, starting with how they are constructed.

Construction

  • DC relays use a freewheel diode that discharges the electromagnetic force that gathers in the inductance when the coil is de-energized, according to Electrotechnik.net. AC contactors do not utilize the freewheel diode construction; instead they use laminating cores to prevent loss from heat and and shading coils to keep electricity running efficiently through the device.

Differences

  • Due to the AC's shading coils, the device can be placed in any location, as long as it has room to operate. The DC contactor needs air when operating, so the device must have plenty of gaps around it to perform properly.

Customization

  • While the AC contactor is considered to be a more reliable and cheaper product, the DC contactor is engineered to allow custom speed and torque. This is ideal for projects that do not follow an already existing template, such as building a robot arm from scratch.

References

  • Photo Credit motor image by Petr Efremov from Fotolia.com
Promoted By Zergnet

Comments

You May Also Like

  • The Difference Between AC & DC Machines

    All electrical machines or circuits require either alternating current (AC) or direct current (DC) to operate. Each method of providing power comes...

  • AC Vs. DC Motors in Electric Cars

    As gasoline becomes more expensive, the environment more threatened and technological breakthroughs more common, electric cars are finally on the verge of...

  • What Is the Difference Between AC & DC Welding?

    Welding is the joining of two or more metal parts by melting them together. This process is unlike soldering, which is simply...

  • How a Contactor Works

    An electronic circuit is composed of electronic components connected via conductive wires which enable the flow of electric currents. A contactor is...

  • How to Wire AC Contactor Lighting

    Alternating current contactors for lighting are generally used on large amperage --- 30 amps or more --- lighting circuits that run on...

  • How to Replace a Ruud AC Contactor

    A contactor in a Ruud air-conditioning system's condensing unit operates the compressor and the condenser fan motor. A Ruud contactor has a...

  • Differences Between AC & DC Generators

    Electromagnetic induction occurs when an electrical wire passes through a changing magnetic field. Generators use electromagnetic induction to convert mechanical energy into...

  • AC Contactor Troubleshooting

    The relay switch that sends electricity to your air conditioner's compressor is known as a contactor. Contactors pull electrical contacts apart when...

Related Searches

Check It Out

How To Travel For Free With Reward Points

M
Is DIY in your DNA? Become part of our maker community.
Submit Your Work!