What is a Contactor?

How contactors work presented by Katie Rydzewski for Galco TV.

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Contactors are used by electrical equipment that is frequently turned off and on with the opening and closing of a circuit. The function of the contactor is to make and break all power supply lines running to a Load or to repeatedly establish and interrupt an electrical power circuit.

Types of Contactors.
AC Mechanically Interlocked IEC Contactors Mechanically interlocked contactors, like the ones pictured above, are designed for reversing 2 speed, reduced voltage, type starter applications.
There are different classifications of contactors used for many different applications. Two of the main classifications for motor control components are the International Electrotechnical Commission (IEC) and the National Electrical Manufacturers' Association (NEMA). The differences between the IEC and NEMA classified components is reflective of their size, speed, functionality and power. IEC and NEMA also rate their components based on different philosophies. North American (NEMA) general purpose machine tool contactors generally emphasizing simplicity of application while definite purpose and European rating (IEC) philosophy emphasizes design for the intended life cycle of the application. Over all, contactors are split between these two classifications. Some examples include:

- AC Mechanically Interlocked - IEC: http://www.galco.com/shop/AC-Mechanically-Interlocked-IEC-Contactors?source=YouTubeHowTo
- DC Mechanically Interlocked - IEC: http://www.galco.com/shop/DC-Drive-Contactors?source=YouTubeHowTo
- AC Reversing - IEC: http://www.galco.com/shop/AC-Reversing-IEC-Contactors?source=YouTubeHowTo
- AC Non-Reversing - IEC: http://www.galco.com/shop/AC-Non-Reversing-IEC-Contactors?source=YouTubeHowTo
- AC Reversing - NEMA: http://www.galco.com/shop/AC-Reversing-NEMA-Contactors?source=YouTubeHowTo
- AC Non-Reversing - NEMA: http://www.galco.com/shop/AC-Non-Reversing-NEMA-Contactors?source=YouTubeHowTo

Galco is a Factory Authorized Stocking Distributor for Over 150 Brands of Industrial Electrical & Electronic Automation, Controls and Component Products; On-Site and Send-In Repair Services for Industrial Control & Automation Products for Over 2,000 Brands; Engineered Systems Integration, Retrofits & Upgrades for Variable Speed Drives, CNC, PLC Systems, Dynamometers & Test Stand Applications. Visit us online at http:// www.galco.com or call us at 800-337-1720.

http://www.galco.com/safety

With respect to the usage, installation or assembly of any products described in this video, Galco Industrial Electronics, Inc., a Michigan corporation, encourages you to follow the requirements and/or guidelines of: i) the Occupational Safety and Health Act of 1970, Public Law 91-596, as amended, and all laws, rules and regulations implemented in relation thereto; ii) the National Electric Code®; and iii) NFPA 70E®. Any installation, assembly or work described in this video should be performed by a qualified licensed electrician.
GTV, Galco, galco.com, Galco Industrial Electronics, and Galco Industrial Electronics, Inc. are registered and/or pending registered trademarks under the U.S. Patent and Trademark Office, assumed names, registered domain names, and/or trade names of Galco Industrial Electronics, Inc., a Michigan corporation.

LEGAL DISCLAIMER:
While we have made every attempt to ensure that the information provided is accurate and has been obtained from reliable sources, Galco is not responsible for any errors or omissions, or for the results obtained from the use of this information. All information is provided "as is", with no guarantee of completeness, accuracy, timeliness or of the results obtained from the use of this information, and without warranty of any kind, express or implied, including, but not limited to warrantees of performance, merchantability and fitness for a particular purpose. At all times you should defer to the instructions and safety guidelines issued by the manufacturer. In no event will Galco, its agents or employees thereof be liable to you or anyone else for any decision made or action taken in reliance on the information provided to you or for any consequential, special or similar damages, even if advised of the possibility of such damages

Видео What is a Contactor? канала GalcoTV