Previous in Forum: MCB Trips with De-energizing of Magnetic Contract   Next in Forum: Motor Duty Rating
Close

Comments Format:






Change Mode
Close

Subscribe to Discussion:

CR4 allows you to "subscribe" to a discussion
so that you can be notified of new comments to
the discussion via email.

Close

Rating Vote:







Add Vote
2 comments
Rate Comments: Nested
Anonymous Poster

Circuit Breakers

07/09/2009 11:31 PM

what is AT and AF for the MCB
Reply
Interested in this topic? By joining CR4 you can "subscribe" to
this discussion and receive notification when new comments are added.
JRaef
Guru
United States - Member - New Member Engineering Fields - Power Engineering - New Member

Join Date: Sep 2006
Location: California, USA, where the Godless live next door to God.
Posts: 4665
Good Answers: 804
#1

Re: circuit breaker

07/10/2009 1:42 AM

Try the search function in the future, this has been answered many times.

AT = Amps Trip

AF = Amps Frame

So a designation of 250AF/150AT means it is a 250A Frame breaker with a 150A Trip element or setting.

__________________
 ** All I every really wanted to be, was... A LUMBERJACK!.**
Reply
Anonymous Poster
#2
In reply to #1

Re: circuit breaker

07/16/2009 12:23 AM

Thanks alot
Reply
Reply to Forum Thread
Have a Different Question?
2 comments

Previous in Forum: MCB Trips with De-energizing of Magnetic Contract   Next in Forum: Motor Duty Rating
You might be interested in: Circuit Breakers, Load Centers, Circuit Tracers

Advertisement

Got Something to Say?
Ask a Question
Start a Discussion

Search this Forum
Electrical Engineering:
Go

CR4 Sections
Aerospace
BioMech & BioMed
Chemical & Material Science
Civil Engineering
Communications & Electronics
Education and Engineering Careers
Electrical Engineering
General Discussion
Instrumentation
Manufacturing
Mechanical Engineering
New Technologies & Research
Software & Programming
Sustainable Engineering
Transportation

Site Directories
Forum Directory
Blog Directory
User Group Directory
RSS Feeds

CR4 Rules of Conduct
CR4 FAQ
Site Glossary

Who's Online (82 right now)
Show Members
Advertisement