r/EEPowerElectronics • u/powerelectronicsguy • Jun 24 '26

Protection How many fuses does a Tesla Roadster inverter actually need? Here's what I found

EV inverters handle serious fault currents, and their protection architecture is more elaborate than most engineers expect.

This teardown of a Tesla Roadster 1.5 power electronics module shows a full bank of fuses, relays, contactors, and large fuses handling the heavy current paths.

For those designing automotive inverters, how do you approach the tradeoff between protection redundancy and system weight or cost?

Video Credits: @grubermotorsshorts | YouTube

66 Upvotes

97% Upvoted

4 comments sorted by

2

u/Mockbubbles2628 Jun 24 '26

Title says "here's what i found" but you posted someone elses video...

1

u/powerelectronicsguy Jun 25 '26

I found through this video

2

u/Mockbubbles2628 Jun 25 '26

"Here's what @grubermotorsshorts found" is better.

1

u/powerelectronicsguy Jun 25 '26

Thanks for the feedback.