How did they decide on those numbers?

Home / the12volt's Install Bay / Relays / How did they decide on those numbers? (

Topic Closed)

Welcome Guest :)

Members

Search

Register

Login

< Prev Topic Next Topic >

704acc

Copper - Posts: 55

Joined: March 01, 2005

Location: United States

Posted: June 13, 2005 at 10:54 PM / IP Logged

I have always wondered how they came up with the numbering system for the contacts of a 12 volt relay. Anyone know?

Ray Kane

Back to Top

ff-mike

Copper - Posts: 199

Joined: November 15, 2004

Location: United States

Posted: June 14, 2005 at 9:28 AM / IP Logged

Those numbers are loosely based on DIN, the German standardization body- the same people who defined the sizes of car stereos

Variations from DIN to what we see

Our# Definition DIN#

30 Common 87

85 relay coil(-) 85

86 relay coil(+) 86

87 n/o contact 87b

87a n/c contact 87a

For more information, see Answers.com

Back to Top

704acc

Copper - Posts: 55

Joined: March 01, 2005

Location: United States

Posted: June 14, 2005 at 10:15 PM / IP Logged

Thanks for the info. Any logic to why they picked such random numbers? For instance, does 29, 84, 88 etc. have any meaning in the "German standardization body"

Ray Kane

Back to Top

Sorry, you can NOT post a reply.
This topic is closed.

Printable version

You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot delete your posts in this forum
You cannot edit your posts in this forum
You cannot create polls in this forum
You cannot vote in polls in this forum

Search the12volt.com

Follow the12volt.com

Disclaimer: *All information on this site ( the12volt.com ) is provided "as is" without any warranty of any kind, either expressed or implied, including but not limited to fitness for a particular use. Any user assumes the entire risk as to the accuracy and use of this information. Please verify all wire colors and diagrams before applying any information.

How did they decide on those numbers?

Sorry, you can NOT post a reply.This topic is closed.

Sorry, you can NOT post a reply.
This topic is closed.