×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!
  • Students Click Here

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

Jobs

switch ratiing

switch ratiing

switch ratiing

(OP)
I am using a switch which is rated at 10a 250VAC 1/2HP, 15A 125VAC 1/2HP UL reconized, CSA certified.  The switch is used to turn on a DC motor with a 30A breaker in-line.  The circuit is supplied with 24 vdc.
my questions....
What is the Max DC current this switch can take?
How can i take a rating like this and calculate the dc current i can use with this switch?

RE: switch ratiing

It depends on nature of load. Please, provide nameplate data of the motor, i.e.
HP or W, type/model, voltage, current, efficiency and manufacturer.

RE: switch ratiing

(OP)
the circuit is running a vacuum motor and is power by 24VDC battery source.  the motor is a 24VDC, three stage, single speed, tangental discharge bypass.

i am looking to find a possible second source on these switches, and most of the switch manufactures rate there switche in the same type format....so any sugestion you mave have in helping me in understanding these rating i would appreciate it

RE: switch ratiing

Please, provide the nameplate current and wattage or horsepower. These are essential parameters to size the switch.

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members!


Resources