I think it does if it's switching under load (arc quenching ability). However, if it's being used as an off-load isolator then it shouldn't matter.
Domestic mcb's for 12v DC
- Thread starter johnad
- Start date
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It's all about the utilization categories. Motor switchgear has different ratings dependent on the load being switched, and the nature of the current. A contactor for a bog standard 3 phase squirrel cage motor is AC-3 category.
Fill yer boots...
https://en.wikipedia.org/wiki/Utilization_categories
Not relevant to MCB's though.
Fill yer boots...
https://en.wikipedia.org/wiki/Utilization_categories
Not relevant to MCB's though.
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maybe if i'd bought some, but I haven't, so sling yer hook, pedant
So you know that Eric has bought some of the £35 ones, do you?
So I said to you what you said to Eric, but as you hadn't bought any that makes me a pedant who should sling his hook.
Eric hasn't bought any either, so what does that make you?
Feel free to be rational and consistent when replying.
Eric hasn't bought any either, so what does that make you?
Feel free to be rational and consistent when replying.
I hope you are very grateful that you don't need to justify anything, given that you are totally unable to.
No. 48 will be a maximum.
They work by heat - imagine a fuse.
Not possible to be able to carry 6A with no damage and then trip on 6.1A.
MCBs should not trip at up to 1.13 times their rating and
in 60 minutes at 1.45 times their rating.
Above that progressively quicker until
for B type - in 0.1 seconds at 5 times their rating.
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