identify a relay

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bill4x4x4

Member - Posts: 4

Joined: June 16, 2008

Location: New Zealand

Posted: March 19, 2009 at 12:58 PM / IP Logged

hi all, first time posting....

I have been given a large quanity of Single Pole Double Throw relays, from a surplus supplier, but none of them have any description printed on them.

Is there any way to tell the rating of the relay?? (ie 30amp, 40amp etc) i have opened one up, but that didnt help at all...

thanks in advance.

bill4x4x4

Member - Posts: 4

Joined: June 16, 2008

Location: New Zealand

Posted: March 19, 2009 at 1:20 PM / IP Logged

identify a relay -- posted image.

maybe i should of attached the pic too..

ckeeler

Gold - Posts: 1,461

Joined: June 20, 2008

Location: New Mexico, United States

Posted: March 19, 2009 at 4:11 PM / IP Logged

what are the terminals labeled?

bill4x4x4

Member - Posts: 4

Joined: June 16, 2008

Location: New Zealand

Posted: March 19, 2009 at 8:08 PM / IP Logged

The standard 12v ones, 85, 86, 87, 87a, 30

91stt

Silver - Posts: 564

This member consistently provides reliable information

Joined: May 24, 2006

Location: New Jersey, United States

Posted: March 19, 2009 at 9:47 PM / IP Logged

It's going to be difficult to tell just by looking at the relay. The lowest current rating for any bosche/tyco type realy I have ever seen is 20A. So I would think that it can be used up to 20A relatively safely.

ckeeler

Gold - Posts: 1,461

Joined: June 20, 2008

Location: New Mexico, United States

Posted: March 20, 2009 at 8:51 AM / IP Logged

exactly what i was going to say.

bill4x4x4

Member - Posts: 4

Joined: June 16, 2008

Location: New Zealand

Posted: March 20, 2009 at 12:03 PM / IP Logged

No problem, i will take it that they are 20 amp and stay on the safe side.

Cheers.

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identify a relay

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