Guys,

I want to know why Horsepower specification is given for Electrical switches.

eg. 1/4, 3/4 etc.

Krishnan.H

 

So you will know how many horsepower the switch is rated for.
With a bit of searching you can probably use the hp rating to find voltage and current ratings, too.

 

Basically it means that the switch is rated to connect/disconnect power to a motor. In the US we follow the NEC (National Electrical Code) which says that the switch must be rated for that purpose. If the switch is not rated with a HP you cannot use it to power a motor.

 

Dear Sir,

Thanks a very excellent and clear explanation...many thanks for that.

I want to know whether the application of switches can be identified from the given set of specifications. Are there any articles for that.

Krishnan.H