Mini bot fuse question

[niteowl22]

Thank you!!! I knew this was the right place to ask for a quick answer. You people are great!!

[Bochek]

these are also commonly refered to as an ATM sized fuse.

[Tuba4]

Got a nice assortment box at our local Walmart with sizes from 2 amp up to 25 amp. Heavy on 7.5, 10, 15 and 20 amp sizes. Under $20.

[sanddrag]

With a direct-drive minibot, I was blowing 5-amp fuses. 10 Amp works but makes me nervous. Maybe there's a 7 Amp fuse.

[Akash Rastogi]

Originally Posted by sanddrag

With a direct-drive minibot, I was blowing 5-amp fuses. 10 Amp works but makes me nervous. Maybe there's a 7 Amp fuse.

How many climbs/matches did yours last with the 5amp?

[Brandon Holley]

Originally Posted by Akash Rastogi

How many climbs/matches did yours last with the 5amp?

For OUR tests, we lasted about 6 inches of vertical travel before the 5 amps popped. When our minibot deploys and hits the bar, the spinning shaft gets slowed down considerably and theres a definite current spike that occurs to get the bot moving.

We switched to 10 amps, been using the same one all competition. Our turn off switch is EXTREMELY reliable so we are less concerned about smoking anything with our system, so 10 amps may be overkill for your needs.

-Brando

[James Tonthat]

We used 5 amps for a bit, went through a fuse a match pretty much.

[DonRotolo]

A team in NJ was using the 7.5A fuse as a shut-off for when it hit the top, I didn't notice any damaged motors. They did blow a fuse every match though.

[548swimmer]

We use a 7.5 A, and replace it after every match.

[clayman]

Originally Posted by 548swimmer

We use a 7.5 A, and replace it after every match.

We did the same, with a 5A. It's our stopping mechanism.

[Mr V]

Fuses are not for protecting components they are for protecting wire. Someone posted a link to the littlefuse data sheet for ATM fuses. They can handle much more than what is stamped on them for short periods, so I wouldn't recommend more than a 7.5A fuse.

[sanddrag]

Originally Posted by Akash Rastogi

How many climbs/matches did yours last with the 5amp?

It immediately blew. Would not even start moving.