2 ms·
I hadn't heard of contactor but that looks like it's just a subtype of relay? And I notice that it says contactors are used where relays start to top out, arou
by dekhn 3y ago
I hadn't heard of contactor but that looks like it's just a subtype of relay? And I notice that it says contactors are used where relays start to top out, around 15A. Which is interesting because the max current I can configure my RAV4 Prime to is ... 14A. Either way I'm not opening up the little portable box that makes this noise. It's clear there's something physical clacking in there, not solid state.
- HeyLaughingBoy 3y agoYes, the big deal with contactors is that they're designed to switch high-current inductive loads. Smaller relays may have problems with the arcing caused by a load like a motor welding the contacts together. So, they have bigger contacts to handle the current and strong springs and a powerful solenoid to open/close the contacts quickly and extinguish an arc before it has time to melt anything. The noise you're hearing is from the contacts opening and closing.