Re: Contactor question

["Tesla list" <tesla@xxxxxxxxxx>]

Original poster: gary350@xxxxxxxxxxxxx 


Yes that will work I have done it many times.  If the relay or 
contactor is rated 30 amps that means each contact is 30 amps.  If 
you parallel 4 contacts you get 120 amps.   I built a 3 Phase 
converters for my Bridgeport Milling machine in the garage.  I need a 
relay for a capacitor.  I used a 10 amp relay with all 3 contacts in 
parallel.   It has been working fine for 25 years.

This reminds me I have a 3 pole 100 amp contactor I would like to 
sell if anyone is interested.  Thats 100 amps per contact or 300 amps 
with all the contacts in parallel.  It needs a good cleaning it has 
collected a lot of dust setting under the work bench for the past 15 
years.  This thing is heavy probably 30 lbs.  120 volt AC coil.  It 
measures about 6"x8"x12".

I also have a current limiting transformer I would like to sell.  It 
is factory rated 1500 watt Continious or some would say 100% duty 
cycle.  I have used it up to 5000 watts on my TC several short 30 
second runs.  After about 10 or 12 short 5000 watt runs it gets a 
little worm about 120 deg.  As long as I don't get it smoking hot it 
won't hurt it.  Usually after 12 short 30 second runs on my TC I am 
ready to stop anyway.  Tomorrow it will be cool and I can fire it up 
again.  It weights about 50 lbs.  Measures about 8"x8"x12".  It is 
rated 240/480 volts AC.

I have several secondary coils, 4", 6", 8", 10", 15" coils wound with 
about 950 turns each and 3 coats of polyurethane.  Coils are all 
would on PVC with enamel coated copper wire the appropriate size for 
each coil.  I need to sell these too.

I have some primary coils to sell too.

Gary Weaver



Original poster: "David Rieben" <drieben@xxxxxxxxxxxxxxx>

Hi all,

Just a quick question about relay contactors. Let's say that I have
a 4-pole, 30 FLA inductive per pole rated contactor. Does this mean
that I will have up 120 amp inductive rating of the contact points if I
use all 4 of the poles in a parallel or series parallel fashion in a single
circuit to switch my pole pig transformer under a load?

Thanks,
David Rieben