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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