I needed a 3 amp slow-blow. I went to my parts bin and found an old baggie of fuses with a hand written "3SB". I checked a fuse under a magnifying glass and sure enough it was stamped 3SB. I proceeded to "blow" through most of the baggie when it occurred to me that maybe they weren't really 3 amp fuses. I looked again with the magnifying glass and there right under the 3SB stamp was 250MA. Yeah, they were 1/4 amp fuses.

So... What the hell does 3SB mean?

p.s. I have since acquired a set of circuit breakers for testing.

You're currently viewing posts by Pinsider JeffZee.
Click here to go back to viewing the entire thread.

Reply

Wanna join the discussion? Please sign in to reply to this topic.

Hey there! Welcome to Pinside!

Donate to Pinside

Great to see you're enjoying Pinside! Did you know Pinside is able to run without any 3rd-party banners or ads, thanks to the support from our visitors? Please consider a donation to Pinside and get anext to your username to show for it! Or better yet, subscribe to Pinside+!

This page was printed from https://pinside.com/pinball/forum/topic/how-not-to-identify-a-fuse?tu=JeffZee and we tried optimising it for printing. Some page elements may have been deliberately hidden.

Scan the QR code on the left to jump to the URL this document was printed from.