DIYbanter - View Single Post - Easy to replace fuses in the 50 to 500 amps range

The Natural Philosopher[_2_]

wrote:
harry wrote:
That's just a switch, it's not difficult to buy battery isolation
switches to do the same and they don't cost more than £200 like the
one above! I can see good reasons for using something like the one
above in motorsport and similar applications but it really isn't that
necessary on a boat as long as you have a readily accessible
mechanical switch.

--
Chris Green- Hide quoted text -

- Show quoted text -
A switch and an isolator are not the same thing. Isolators are meant
to be opened under no-load conditions.
They won't last long used as switches which will interrupt their rated
current.

True, I was just meaning that it isn't an overload protection device.

It's not actually clear whether the device in question is intended to
*switch* the current or not. Given that it's a solid state device it
might actually be able to switch while on load without much distress.

Yes. The race car rules say you have to have a master wotsit that will
isolate the battery whatever load is being drawn. In a crash the
marshalls MUST be able to render the car safe in every sense electrically.

Those solid state isolators WILL switch full current.