Contactor vs Relay: What's the Difference?

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    Contactor Relay
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SUMMARY

A contactor is a type of relay specifically designed to handle high current loads, typically above 15 amps, making it suitable for industrial applications. In contrast, standard relays are used for lower current applications and are not built to manage the same level of electrical load. When choosing a contactor, factors such as the load type, voltage rating, and operational environment must be considered to ensure optimal performance.

PREREQUISITES
  • Understanding of electrical load ratings
  • Familiarity with relay and contactor specifications
  • Knowledge of operational environments for electrical components
  • Basic principles of electrical circuits
NEXT STEPS
  • Research "Contactor specifications and ratings" for detailed selection criteria
  • Learn about "Relay types and applications" to differentiate between relays
  • Explore "Electrical load calculations" to determine appropriate component usage
  • Investigate "Environmental factors affecting electrical components" for better installation practices
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Electrical engineers, technicians, and anyone involved in designing or maintaining electrical systems that require load management and component selection.

Stanley_Smith
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I don't see the difference between a contactor and a relay. Can anybody tell me what the difference is, when to use a relay over a contactor ?
What are some criterias that need to be taken into consideration when choosing a contactor ?

Thanks,


Thanks,
 
Engineering news on Phys.org
it looks like a contactor is a relay capable of large amt. of amps..
http://www.surplussales.com/Relays/REcontacts.html
 
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