Pranav iyer
Good evening, Can anyone tell me if I can use a 6 pin on-off-on toggle switch for my points control panel instead of the 3 pin? Thanks in advance, Pranav
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Nelsonb111563

Yes you can

Basically what you have is a DPDT With center off switch. (Double Pole, Double Throw).  It as set up internally as two SPDT (Single Pole Double Throw) in one housing using one lever.  You actually could control 2 seperate circuits with  it or only use one side of the switch and leave the other 3 pins out.  The switches tend to be larger that the SPST style so mounting space is a slight consideration but other than that I would not hesitate to use them.

Nelson Beaudry,  Principle/CEO

Kennebec, Penobscot and Northern RR Co.

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Pranav iyer

Thank you Nelson. I was

Thank you Nelson. I was wondering if I was stuck with completely wrong switches. This is probably a silly question. Once in the on position, these switches ( the ones I have) stay in that position. Are the ideal point-motor control toggles supposed to come back to the off on their own? Or do I have to use them by a quick flick to the side followed by a quick flick back, to prevent the point from getting burnt? That would make LED indication important I think. Thanks in advance, Best regards, Pranav
Reply 0
akarmani

YES, ideal point-motor control toggles should return to off

With a solenoid or point-motor (I have to admit I never heard this term before.  Thank you google.) you should use a monetary switch (Spring back to off.  Center off in this case as you would use a SPDT (Single Pole Double Throw)).  You are correct that an indicator light would be beneficial. 

On a stall motor type switch machine (think Tortoise) it should not be a monetary switch (like the ones you have). Current through the stalled motor holds the switch points in place and the switch can be used as an indicator.

I would recommend that you get monetary switches.  You can use what you have, but you will have to "quick flick to the side followed by a quick flick back, to prevent the point from getting burnt."  But the first time you forget the "quick flick back" and have to replace a switch machine you will have regret.

Art

Reply 0
MikeM

That should read "momentary contact" switches...

With a DPDT momentary contact switch (sometimes momentary contact is abbreviated MC) you have the equivalent to a DPDT switch with a center-off position; the main difference with an MC switch is that it is spring loaded to automatically return to the center position the moment you physically let go of the switch lever.  These would, for example, be the type of electrical switches you might use with switch machines that use solenoid coils to throw the points; which coil is energized would depend on which way you pressed the lever but when you let go current to the coils would then cut off, preventing you from possibly damaging them (e.g. burning them out).

MikeM

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akarmani

dang spell check

Momentary is what you should use.  Monetary switches are to much money.  LOL

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salty4568

Switches

I purchased a couple of the new Iowa Scale Engineering motors and I like them so far. At only $12 each, they have a servo and control board included. Only require an SPST switch as wneh it foes to the off position, the circuitry send the servo back to the original position. The little circuit board also has red and green SMD LEDs.

http://www.iascaled.com/mrservo-an-introduction/ 

I would recommend them and the price is sure right!

Skip Luke

 

Skip Luke
Retired Railroader
washington State

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