OT: 12V Solenoid/Contactor Preference
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  1. #1
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    Default OT: 12V Solenoid/Contactor Preference

    What's everyone's brand preference when it comes to 12V solenoids & contactors?

    I've been using a White Rodgers unit. They have been fine, but we have started to experience multiple failures lately.

    I'd like to know what everyone else has experienced for good reliability.

    I'd be looking for a unit in the 40A-100A range. I'd prefer to stay with the stud type. I realize that there are relays that wouldn't have as many moving parts, but sliding on spade connectors doesn't really work for all I'm trying to feed.

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    We need more information. What is this for? Model number of White Rogers unit. Pictures?

    Tom

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    You do not say what the application is. Or the actual problem. Many contactors are made for specific applications and may perform better if matched to the application. Otherwise you are just buying a relay. The solid state ones should eliminate problems with the contacts pitting which is a common problem with relays and contactors. But they need to be closely matched to the circuit parameters. And may need more ventilation. How you specify it is an important step. Often an increase in the rated current, within reason, can produce a great increase in the operational life for just a small increase in price.

    For a quality product I would go to known manufacturers who have been in business for a while. Avoid internet only sources and white box imports. The manufacturers below predate the internet and generally have quality products.

    Manufacturers like these are well established and make quality products:

    Potter & Brumfield
    Square D
    Siemens
    Eaton Cutler Hammer
    GE
    Schneider Electric
    TE Connectivity


    Some Sources:

    Mechanical:

    https://www.newark.com/w/c/automatio...%2FQwWU0SyqajQ

    Contactors - Motor Controls - Grainger Industrial Supply

    McMaster-Carr

    Internal Error


    Solid State:

    https://www.newark.com/w/search/prl/...14_US%2Fsearch

    https://www.grainger.com/search?sear...ate+Contactors

    https://www.mcmaster.com/solid-state-contactors

    https://www.digikey.com/products/en/...70?k=contactor


    Many more legit sources.


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