Low cost 12V relay/30A

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1. I need low cost 5 pin, 12V relay with SPDT & in both NC & NO state current should be 30A or higher.

2. Any suggestions?

3. I have searched this relay, but it is costly, any cheaper part?:
http://www.parts-express.com/12-vdc-automotive-5-pin-relay-spdt-30-40a-bosch-type--330-073

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OK, 30 cents cheaper, free delivery, 40amps instead of 30 amps plus they give you the matching socket.

 

http://www.ebay.com.au/itm/1x-12...

 

 

Ross McKenzie ValuSoft Melbourne Australia

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To Add End application: Will be switching main on or off depending upon some condition.
Input driving : 12V dc
Output control : 220V ac , 30A ac , 50Hz

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You selected relay is for output at 14 V dc, 30A. For output at 220V ac, 30A it may burn out.

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well if you want drive 230Vac --> not see automotive relay! 

30A 230Vac (CE or VDE ) + 4000V isolation --> not cheap.

it is contactor world not relay! 

 

Good luck with this.

Thierry

 

Thierry Pottier

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Vindhyachal Takniki wrote:

To Add End application: Will be switching main on or off depending upon some condition.
Input driving : 12V dc
Output control : 220V ac , 30A ac , 50Hz

 

When you fail to provide correct information you will not receive the correct answers.

 

Ross McKenzie ValuSoft Melbourne Australia

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panasonic DQ series. 30A resistive load.

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Here is one that is relatively inexpensive...

 

http://www.aliexpress.com/item/3...

 

 

Just some guy

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P&B T90 series a possibility. What kind of load?
(The one mentioned in above post appears to be same type)

Tom Pappano
Tulsa, Oklahoma

Last Edited: Wed. Dec 24, 2014 - 05:11 AM
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currently i am using two relays, as I didn't found single relay with 30A ratings

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Switching 220vac through the automotive relay you linked to is NOT a good idea.   As noted a contactor is a better choice at the voltages and currents you are looking to switch.

I use these:

http://www.automationdirect.com/...

 

But they are 24vdc, which is a more common control voltage, and they are SPST which is a problem for your application.  PCB relays I would not recommend as running that kind of current through traces will heat the board up.

 

You might get lucky with an 'ice cube' type relay.  Omron makes them.

 

What is the application that requires you to switch such high currents?

 

Jim

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Atmel Studio6.2/AS7, DipTrace, Quartus, MPLAB, RSLogix user

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@jgmdesign

Consider a test room in which household appliances are run (like fan , tubelight , bulb or any other household appliance)
Have to switch between main & generator depending upon certain input criteria.

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You want a load transfer switch. There are usually specific legal requirements for this application.