(Topic ID: 183860)

Can I put 39v on a 24v trip relay ?


By jimy_speedt

2 years ago



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  • Latest reply 2 years ago by jimy_speedt
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    #1 2 years ago

    Hi,

    For a Zaccaria which has a defective relay coil, I found a replacement part with the size (fit into the bracket) and resistance. The original part cannot be found. Only Zac sends 39vdc to its coils and the rare spec I found about the replacement relay says it is a 24v. I might have to add a diode on it.

    Knowing that the coil will be triggered for a second only, then stopped, do I run a risk in using this part ?

    Thanks

    #2 2 years ago

    I think that really depends on the specs for the relay you choose, so we would need to see a datasheet. Relays "can" operate at higher voltages than rated...but they will have to dissipate more heat. 12 VDC automotive relays operate up to the maximum voltage of a fully charged lead-acid battery, about 15 VDC.

    #3 2 years ago

    It is really tough to get the specs and when you order at Marco, they do not have a clue of what they are selling (by the way this is a good shop

    The difficulty is the following, it is a relay coil which is less thick than the common relay coil. when activated it attracts the metallic plate. This plate ends with a kind of arm that releases a drop down target (from down to up position).

    The original coil is a Zaccaria D355 S750, on the internet the only part available with this spec is a common coil working with a plunger and thicker than the relay I am looking for. See picture.

    D355 corresponds to AWG 27. I found a WMS M1-27-700 at Marco which is a bank reset coil. If these is no diode I will add it. The issue is now that this coil operates normally with 24v. It was not written on MArco's site and I found it by chance on a list of coil's on the internet.

    If someone can advise what replacement coil, still on the market, I could you use it would be helpful

    IMG_0001 (resized).JPG

    #5 2 years ago

    No it is the other one

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