Pages: [1]   Go Down
Author Topic: need a 3PDT switch - on/on, not on/off/on - with label plate  (Read 592 times)
0 Members and 1 Guest are viewing this topic.
Offline Offline
Newbie
*
Karma: 0
Posts: 23
View Profile
 Bigger Bigger  Smaller Smaller  Reset Reset

I'm having trouble finding the switch I need for a project.  I need a 3PDT switch that is on/on (doesn't have a center off position).  I found one this one but it doesn't have a label plate like this SPST switch.  I've looked for an hour and can't find anything.  This is for a semi-commercial product so cost is somewhat of a concern.  If it was jut for me, I'd buy both of the linked switches and make what I need from them.

Alternatively, does anyone know where I can buy just the label plates?
Logged

Left Coast, CA (USA)
Offline Offline
Brattain Member
*****
Karma: 361
Posts: 17294
Measurement changes behavior
View Profile
 Bigger Bigger  Smaller Smaller  Reset Reset

I'm having trouble finding the switch I need for a project.  I need a 3PDT switch that is on/on (doesn't have a center off position).  I found one this one but it doesn't have a label plate like this SPST switch.  I've looked for an hour and can't find anything.  This is for a semi-commercial product so cost is somewhat of a concern.  If it was jut for me, I'd buy both of the linked switches and make what I need from them.

Alternatively, does anyone know where I can buy just the label plates?

Possibly a 4PDT toggle would be easier to find? And just don't use the fourth contact pole.

https://www.sparkfun.com/products/11153
Logged

The Netherlands
Offline Offline
Edison Member
*
Karma: 50
Posts: 1662
View Profile
 Bigger Bigger  Smaller Smaller  Reset Reset

There's lots of switches in lots of formfactors.
Do you also need some kind of formfactor ?
The toggleswitch retrolefty pointed to, does have the unwanted centerposition.
There's also pushbuttons and turnswitches.
I'm pointing these out because they are also available with separate contacts so you can stack them and so have 3, 4 or 5 levels.
But hese are quite expensive.
So you can also consider using a simple switch and one or more relays.
Logged

Have a look at "blink without delay".
Did you connect the grounds ?
Je kunt hier ook in het Nederlands terecht: http://arduino.cc/forum/index.php/board,77.0.html

UK
Offline Offline
Faraday Member
**
Karma: 99
Posts: 4153
Where is your SSCCE?!?!
View Profile
WWW
 Bigger Bigger  Smaller Smaller  Reset Reset

What is the actual end result you are trying to achieve?  It may well be that there is a better way of doing it that doesn't involve a 3PDT switch.
Logged

Get 10% off all 4D Systems TFT screens this month: use discount code MAJENKO10

Offline Offline
Newbie
*
Karma: 0
Posts: 23
View Profile
 Bigger Bigger  Smaller Smaller  Reset Reset

Form Factor
I need this to be easily installed into an existing sheet metal control panel.  That limits me to switches with circular mounting holes.  I prefer solder lugs, but that's negotiable.

End Result
I'm making an electric start system for a generator.  Of the 3 circuits in the 3PDT switch, the first is being used to switch power on/off to the arduino.  The other 2 circuits are used to direct an existing switch on generator's control panel between the stock wiring harness and the arduino.  So here's how the circuit works:
switch ON - arduino is on, the stock switch on the generator is routed to the arduino
switch OFF - arduino is off, the stock switch on the generator is routed to the factory wiring harness

I could use a basic SPST switch and a 3PDT relay, but I'm finding that to be more expensive.

A little more searching has turned up these switch plates.  They're nice and also affordable.  The drawback is that they are for 12mm threads.  Swtiches with 12mm threads are pretty big for this application and much more expensive ($8.51) than the 6mm versions ($1.45).  I would really like to find the switch plates for the 6mm switches.

Thanks for looking.
Logged

Offline Offline
Newbie
*
Karma: 0
Posts: 23
View Profile
 Bigger Bigger  Smaller Smaller  Reset Reset

Found this plate.  Its just what I needed.  I don't know how I missed it the first time I went through digikey's catalog.
Logged

Pages: [1]   Go Up
Jump to: