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Contactor recommendation

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rdu.hari(at)gmail.com
Guest

Posted: Mon Feb 17, 2014 9:32 am Post subject: Contactor recommendation

Hello group

 Wondering if I can use a 28V cutler hammer 6041 series contactor in a 12V system? 

 New Type II contactors are way too expensive and exploring good condition used ones. 

 Question is, is it better to use a new inexpensive Type I contactor or a used Type II.

 Are there recommendations for good quality Type I?

 TIA

Hari



  [quote][b]

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dee.whittington(at)gmail.
Guest

Posted: Mon Feb 17, 2014 5:19 pm Post subject: Contactor recommendation

Hari, we bought our contactors for our Subaru Eggenfellner 3.6L from B&C. Doug, our electrical guru, said they were not expensive.



Dee



 DeWitt (Dee) WhittingtonRichmond, VA

804-677-4849 iPhone

804-358-4333 Home



 



On Mon, Feb 17, 2014 at 12:30 PM, Hariharan Gopalan <rdu.hari(at)gmail.com (rdu.hari(at)gmail.com)> wrote:

[quote] Hello group

  Wondering if I can use a 28V cutler hammer 6041 series contactor in a 12V system? 

  New Type II contactors are way too expensive and exploring good condition used ones. 

  Question is, is it better to use a new inexpensive Type I contactor or a used Type II.

  Are there recommendations for good quality Type I?

  TIA

Hari



   	  Quote: 	
		  



ist" target="_blank">http://www.matronics.com/Navigator?AeroElectric-List

tp://forums.matronics.com

_blank">http://www.matronics.com/contribution



	
[b]

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nuckolls.bob(at)aeroelect
Guest

Posted: Tue Feb 18, 2014 6:00 am Post subject: Contactor recommendation

At 11:30 AM 2/17/2014, you wrote:

  	  Quote: 	
		  Hello group



 Wondering if I can use a 28V cutler hammer 6041 series contactor in a 12V system? 



 New Type II contactors are way too expensive and exploring good condition used ones. 



 Question is, is it better to use a new inexpensive Type I contactor or a used Type II.



 Are there recommendations for good quality Type I? 	


     I'll suggest you update yourself on the

     contactor discussions here on the List.

     In particular, this thread in the archives . . .



  http://tinyurl.com/kdkbhk7



     "Good quality" is not a quantified term.

     One might infer that the speaker's concerns

     are for "reliability" in the sense that the

     part has an attractively low demonstrated failure rate.

     Or the speaker may be referring to service life

     wherein the demonstrated effects of wear-and-

     tear are not so great as to necessitate unduly

     frequent replacement. But then, both gross

     failure and wear-out will drive a remove and

     replace event . . . so perhaps there is little

     value in differentiating the root cause for

     the replacement.



     Contactor failure rooted in any cause is of

     little safety concern for the failure tolerant

     design (see chapter 17) . . . it should be only

     a cost-of-ownership issue.



     The beer-barrel contactors from White-Rogers/

     Stancore and Cole-Hersee . . .



  http://tinyurl.com/lomgmle



     . . . have been around for a very long time. They

     demonstrate low remove/replace rates and

     are quite economical. One may embrace any

     number of ideas for 'upgrading' a contactor

     but in the final analysis, a positive return

     on investment is exceedingly hard to demonstrate.



     If it were my airplane . . .



 [img]cid:.0[/img]

    . . . these can be purchased from a variety

    of sources.



 

 

   Bob . . .

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