Controlling a 30A contactor using Arduino Uno board

alec_t

Well-Known Member

Most Helpful Member

• Aug 16, 2023

• #2

Welcome to ETO!
Which specific contactor?
Is the load purely resistive or is it inductive?
What voltages are involved?
Do you have soldering skills?

 

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I

Isala_Silva

New Member

• Aug 16, 2023

• #3

I'm planning to use a 30A 3 phase contactor. The load is purely resistive. The maximum voltage involved is 230V AC. I do have some soldering skills.

 

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rjenkinsgb

Well-Known Member

Most Helpful Member

• Aug 16, 2023

• #4

I'd suggest a simple, cheap, solid-state relay to control the contactor - many can operate from 5V with a few milliamps, and control a fully isolated high power AC load.

This type of thing; about 5mA on the control side at 5V:

Solid State Relay Module SSR-40DA 40A, 3-32V DC to 24-380V AC. | eBay

Solid State Relay Module SSR-40DA 40A 250V 3-32V DC Input 24-380V AC Output. Load Current: 40A. Quantity: 1 Pc.

www.ebay.co.uk

 

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danadak

Well-Known Member

Most Helpful Member

• Aug 16, 2023

• #5

What is the part number of the contactor or a link to its specs ?


Regards, Dana.

 

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BR-549

Member

• Aug 16, 2023

• #6

Is this replacing or modifying existing operating equipment? Is there an emergency stop switch on apparatus?

Is it necessary to disconnect line voltage to prevent over charging?

If you are using Arduino for control, what are you using for regulating the charging of the batteries?

 

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