HOME  |  NEWS  |  BLOGS  |  MESSAGES  |  FEATURES  |  VIDEOS  |  WEBINARS  |  INDUSTRIES  |  FOCUS ON FUNDAMENTALS
  |  REGISTER  |  LOGIN  |  HELP
Comments
View Comments: Newest First|Oldest First|Threaded View
<<  <  Page 2/2
Larry M
User Rank
Platinum
Re: Relay vs. Contactor
Larry M   4/25/2012 11:10:43 AM
NO RATINGS
GlennA wrote "There is a difference."

Not really. That's like saying that all lamps over 300 watts are to be called lamps and those less than 300 watts are to be called light bulbs. A difference between control voltage and switching voltage isn't really a discriminator either.

Is the "condenser" in the ignition of your pre-1980s car not a capacitor, just because the auto mechanic calls it by that name?

Larry

TJ McDermott
User Rank
Blogger
Re: Relay vs. Contactor
TJ McDermott   4/25/2012 9:58:21 AM
NO RATINGS
Boy, this story sounds a lot like the Maytag stories we've heard this year.

GlennA
User Rank
Gold
Relay vs. Contactor
GlennA   4/25/2012 9:23:34 AM
NO RATINGS
There is a difference.  Contactors are usually used when driving motors.  They have a higher voltage rating to prevent arc-over when stopping a motor.  Relays are often used in control circuits and have lower voltage ratings.  N.B. There is a voltage rating for the coil that pulls-in the contacts, and a different voltage / current rating for the contacts that drive the load..

<<  <  Page 2/2


Partner Zone
Latest Analysis
A South African startup is combining recycled plastic with solar power to give underprivileged school children a stylish schoolbag that also supplies them with light to study by.
An in-depth survey of 700 current and future users of 3D printing holds few surprises, but results emphasize some major trends already in progress. Two standouts are the big growth in end-use parts and metal additive manufacturing (AM) most respondents expect.
Technology and global expansion are playing key roles in making manufacturing an attractive field for women to join, more than ever before, said the president of a woman-owned family of companies.
A few years ago, reshoring roared onto the scene as the next great movement in manufacturing, but the data so far reflect otherwise.
In another sign that self-driving cars are on the distant horizon, Ford has been granted a patent for an “autonomous vehicle with reconfigurable seats.”
More:Blogs|News
Design News Webinar Series
8/13/2015 11:00 a.m. California / 2:00 p.m. New York
6/25/2015 11:00 a.m. California / 2:00 p.m. New York
6/24/2015 11:00 a.m. California / 2:00 p.m. New York
6/11/2015 11:00 a.m. California / 2:00 p.m. New York
Quick Poll
The Continuing Education Center offers engineers an entirely new way to get the education they need to formulate next-generation solutions.
Aug 31 - Sep4, Embedded System Design Techniques™ - Writing Portable and Robust Firmware in C
SEMESTERS: 1  |  2  |  3  |  4  |  5  |  6 |  7


Focus on Fundamentals consists of 45-minute on-line classes that cover a host of technologies. You learn without leaving the comfort of your desk. All classes are taught by subject-matter experts and all are archived. So if you can't attend live, attend at your convenience.
Learn More   |   Login   |   Archived Classes
Twitter Feed
Design News Twitter Feed
Like Us on Facebook

Sponsored Content

Technology Marketplace

Copyright © 2015 UBM Canon, A UBM company, All rights reserved. Privacy Policy | Terms of Service