Thread: Optimum Tvan & Traxide Setup

Originally Posted by drivesafe

Hi Don and no you are not missing anything.

The latest versions of our isolators are now fitted with MIDI fuses instead of the 50 amp circuit breakers.

We are no longer using circuit breakers because of the high current alternators found in most new vehicles ( Land Rovers and other makes ). This is because the circuit breakers will not satisfactorily meet the higher current capabilities of these larger alternators.

OK. I didn't take much notice of the circuit breaker box when I did the Traxide install. Is it in the engine bay or inside the cabin? Can it be simply changed over to a Midi fuse? Do you sell these?

Originally Posted by DieselLSE

OK. But the Traxide fuse is only 50A anyway. Or am I missing something?

The Traxide “fuse” is actually a 50 amp auto resetting circuit breaker.

The device will allow periodic overloads, it will trip and then reset and so on.

A fuse in this type of setup must be larger to avoid having to continually replacing the blown fuse.

In a small number of cases, the circuit breaker is tripping too often and eventually fails.

Your isolator can safely handle 90 amp CONTINUOUS load and spikes of well over 100 amps.

Originally Posted by drivesafe

The Traxide “fuse” is actually a 50 amp auto resetting circuit breaker.

The device will allow periodic overloads, it will trip and then reset and so on.

A fuse in this type of setup must be larger to avoid having to continually replacing the blown fuse.

In a small number of cases, the circuit breaker is tripping too often and eventually fails.

Your isolator can safely handle 90 amp CONTINUOUS load and spikes of well over 100 amps.

Should I replace the Traxide 50Amp circuit breaker with your latest upgrade (which from the above posts would be a midi fuse)? If so, do you provide the upgrade fuse/holder assembly? I'm quite happy to solder it in.

Originally Posted by DieselLSE

Should I replace the Traxide 50Amp circuit breaker with your latest upgrade (which from the above posts would be a midi fuse)? If so, do you provide the upgrade fuse/holder assembly? I'm quite happy to solder it in.

No, there is no need to replace the circuit breaker as it will work fine in the vast majority of cases.

I have upgraded the newer isolators to remove the few times the circuit breakers have been a problem.

Originally Posted by drivesafe

No, there is no need to replace the circuit breaker as it will work fine in the vast majority of cases.

I have upgraded the newer isolators to remove the few times the circuit breakers have been a problem.

Thanks Tim, I'm getting it bit by bit. I'll upgrade the two battery Midi fuses from 40Amp to 60Amp and retain the 50Amp Traxide circuit breaker. Should I have problems, what size Midi fuse should replace the circuit breaker? 70Amp?
And to round off the thread. If I were to upgrade the Tvan batteries from AGM to Lithium, what would be the recommended charging setup?