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i need info on this conponent i dont know weathe it is a tilt swich or a relay
i says this way up.
and it is called: mercury wetted contact relay i have a few pics
Are you looking for the contact rating or the coil rating.
Contacts are usually rated in terms ov voltage and current.
The coils have a resistance and a normal opeating voltage.
I dont know them off the top of my head but the data is available if you Google for HGSM 51111, the part number on the relay label. Have a quick dig around and you will find a data sheet with all you need to know.
How do I know? I just did it.
The image shows the inside of such a relay after removing its casing and taken out the magnetic operating coil.
Shinny mercury coating can be seen along all the surface of the moving contact.
These contacts are usually for fast signal switching purpose where contact bounce is a problem. You can see from the image that large cylindrical metal block is attached to each fix contact at the top to absorb the energy that the moving contact carries when the contact closes.
Note the contact point is the tiny bits at the bottom of the semi-circular depression on the fixed contacts in the image. So it is really tiny and not meant for a lot of current.
The nice thing is mercury will climbs up the moving contact and "wets" the contact point.
I agree with eblc1388, low current/voltage is common in this type of relay, in that type of enclosure.
The relay looks very much like what was once found in PBX telephone switchgear. I recall "raiding" an old PBX box years ago for one of those relays. The contact rating was very minimal, as in well under one Amp, and low voltage as well. They are used in telephone gear to give "quiet" conections that don't oxide over time, and have extremely high numbers for expected nuber of operations before failure, often MTBF could be several million operations.
You can also get VERY high capacity mercury wetted relays ( contactors at these power levels. ) They are often used to interupt live loads at high speed or fast cycling, which could trash/weld a normal mechanical contact.
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