Interface 60 HP motor with Microcontroller

[Shadly Salahuddin]

I want to switch on and off 5 60HP motor. How can I interface the motors with microcontroller?

 

[barry]

Use a relay?

 

[D.A.(Tony)Stewart]

bzzzzzzztthwap ... the sound of a relay burning its contacts.

I believe they are called solenoid actuated knife-switch contactors with MOV contact arc suppression under $1k per DIN module. Cheap ones for $100 may not be comparable quality. http://www.intelligentproducts.com/product_pdfs/A28_CA7_Selection_v209.pdf

 

[barry]

A contactor IS a relay. Furthermore, I don't think you are going to find a 60 HP CONTACTOR that you can drive directly from a microcontroller, so you probably will need a smaller "pilot" relay.

 

[Easyrider83]

Possible, we are talking about gasoline engine? :thinker:
Anyway, all of this could be interesting. No voltages, no currents. Just alot of horses... :grin:

 

[D.A.(Tony)Stewart]

A contactor IS a relay. Furthermore, I don't think you are going to find a 60 HP CONTACTOR that you can drive directly from a microcontroller, so you probably will need a smaller "pilot" relay.

Yes Barry, I agree but only in theory.. In practise if you search for Standards on safety, catalogs or specifications you won't find any 60HP Relays only Contactors.

@Easyrider > we know the question was vague which suggests the level of useful assistance required in your answer. Pls take note in future.
Driving a relay might sound trivial... but the next level to drive a 60HP motor requires the keywords Contactor 60HP ​as in my ref link to a random catalog

 

[D.A.(Tony)Stewart]

A contactor IS a relay. Furthermore, I don't think you are going to find a 60 HP CONTACTOR that you can drive directly from a microcontroller, so you probably will need a smaller "pilot" relay.

if you looked deeper in my link....
Applications
Direct control from PLC:
The low power consumption contactor designed
to control motors and other loads is especially
aligned to the specifi requirement of electronic
control circuits. The low power consumption of
1.5 W/60 mA allows direct control through PLC’s
without the need for interposing relays. Power
dissipation is greatly reduced limiting the heat
effect in control panels.