very high current DC switch
 

Does anyone know where I can get a reasonably priced ($30 or less)
switch that can handle at least 200 amps at 13.8V?


--
Chris W
KE5GIX

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very high current DC switch
 

On Wed, 14 Jun 2006 14:09:48 -0500, Chris W wrote:

Does anyone know where I can get a reasonably priced ($30 or less)
switch that can handle at least 200 amps at 13.8V?

Have you thought of contactors?

Car starter solenoids, battery vehicle contactors etc?

Just a thought, DC switches are getting rarer by the year, we use some Schneider
Group switches that are fast breaking but way outside your budget.

Peter
--
Peter & Rita Forbes
Email:
Web: http://www.oldengine.org/members/diesel

very high current DC switch
 

a reasonably priced ($30 or less) switch
that can handle at least 200 amps at 13.8V?
Chris W
KE5GIX

http://www.google.com/images?q=Ford+solenoid
Availaible in junkyards even cheaper.

very high current DC switch
 

"Peter A Forbes" wrote in message
...
Have you thought of contactors?

As I recall, contactors are rape. Hell, the MOSFETs to do that (say, 8 x
IRFZ46N, maybe $10) are cheaper than the $1/amp I recall advertised. YMMV..

Tim


--
Deep Fryer: a very philosophical monk.
Website: http://webpages.charter.net/dawill/tmoranwms

very high current DC switch
 

Chris W wrote:

Does anyone know where I can get a reasonably priced ($30 or less)
switch that can handle at least 200 amps at 13.8V?


Don't know about the $30.00 or less but Marine and RV places have a
battery selector switch.

Bill K7NOM

very high current DC switch
 

On Wed, 14 Jun 2006 16:55:44 -0500, "Tim Williams"
wrote:

"Peter A Forbes" wrote in message
.. .
Have you thought of contactors?

As I recall, contactors are rape. Hell, the MOSFETs to do that (say, 8 x
IRFZ46N, maybe $10) are cheaper than the $1/amp I recall advertised. YMMV..

Tim

We pay £18 or so for a 180A rated 28V DC continuously rated coil, or
higher/lower price depending on output.

We make large industrial chargers for the rail industry and use these for output
cutoff.

Have a look at Albright International's website:

http://www.albright.co.uk/

We use the SW80, SW180, SW200 and SW201 (SW201 has Change-over contacts)

If any of those meet your needs, we can probably help source some in small
numbers for you or they may have agents over in the USA.

We only use 28V DC continuously rated coils (most other voltages are available)
and have SW80 and SW180 on the shelf in the stores here.

HTH

Peter
--
Peter & Rita Forbes
Email:
Web: http://www.oldengine.org/members/diesel

very high current DC switch
 

On 2006-06-14, Chris W wrote:
Does anyone know where I can get a reasonably priced ($30 or less)
switch that can handle at least 200 amps at 13.8V?

maybe an old starter switch (from before solenoids/relays were used)

Bye.
Jasen

very high current DC switch
 

On Thu, 15 Jun 2006 10:34:58 -0000, Jasen Betts
Gave us:

On 2006-06-14, Chris W wrote:
Does anyone know where I can get a reasonably priced ($30 or less)
switch that can handle at least 200 amps at 13.8V?

maybe an old starter switch (from before solenoids/relays were used)


http://205.243.100.155/frames/Newgap2a.jpg

Hahahahaahahahaa! Thousands of Amps!

very high current DC switch
 

Chris W wrote:

Does anyone know where I can get a reasonably priced ($30 or less)
switch that can handle at least 200 amps at 13.8V?


go to your auto parts store and ask for a
out board starter solenoid.

--
Real Programmers Do things like this.
http://webpages.charter.net/jamie_5

very high current DC switch
 

On Wed, 14 Jun 2006 14:09:48 -0500, Chris W wrote:

Does anyone know where I can get a reasonably priced ($30 or less)
switch that can handle at least 200 amps at 13.8V?

Momentary:
Starter solenoid (they usually have a limited duty cycle)

Sustained contact:
Industrial power contactor (Relay)

Battery Selector switch as used on Boats -(usually four position
Battery #1, Battery #2, Both, Off)

Check an auto parts store for a battery switch - usually designed to
mount on the battery terminal to break contact to prevent loads and
leakage from running down the battery while in storage, or to prevent
vehicle theft.

A Big Old knife switch - scarcer than hen's teeth, but relatively easy
to make.

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very high current DC switch
 

On Wed, 14 Jun 2006 14:09:48 -0500, Chris W wrote:

Does anyone know where I can get a reasonably priced ($30 or less)
switch that can handle at least 200 amps at 13.8V?

IGBT transistor rated at 200amps - $30
http://www.mpja.com/productview.asp?product=15539+QT