Electronics > Projects, Designs, and Technical Stuff
$1.50 Mains circuit breakers
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Whales:
B, C and D types; single to triple pole.   EDIT: RCDs too (but they're more expensive).

https://lcsc.com/products/Circuit-breake_11004.html

"CHINT" brand. Example $1.50 C10 : https://lcsc.com/product-detail/Circuit-breake_NXB-63-1P-C10A_C153829.html

Very curious about what's inside one.  Might add a couple to an order before I get home in a few weeks.  No I'm not going to use one in my house, for reasons of 'negative feedback'  I need to stick to brands I can keep accountable/are local.

These things are made in large enough quantities that $1.50 might be a realistic manufacture + sales cost.  Are the well-known western brands anywhere near this cheap in quantity?
capt bullshot:
The cheapest well known brands here (Germany, Reichelt, single pieces):
ABB B16 2.80 EUR
Kopp B16 2.60 EUR

Other characteristics and nominal current ratings are significantly more expensive.
B16 is pretty much the usual standard here.
Whales:
Thanks bullshot.  Looks like we're not magnitudes off then, so these breakers have a chance of being not-crazy.

EDIT: Just read your signature :D

Side question: I'm in Greece currently, it looks like the standard is to use C breakers (C10, C16) for lights + pp in houses rather than B.  Is this common in other parts of Europe?
capt bullshot:

--- Quote from: Whales on October 31, 2018, 08:12:12 pm ---Side question: I'm in Greece currently, it looks like the standard is to use C breakers (C10, C16) for lights + pp in houses rather than B.  Is this common in other parts of Europe?

--- End quote ---
No idea. Anyway, IMO B characteristics sometimes is too sensitive. E.g. if you turn on a "beefy" tower PC plus two monitors setup through a single switchable power strip, this can trip a "B" breaker at fifty-fifty chance. But regulation and standards tend to over-emphasize safety, so your vanilla electrician might refuse to install a "C" breaker, just to be sure.
Otherwise, you'll find a lot of legacy installation with old "L" breakers, AFAIK these are very slow in terms of overload (thermal trigger), so IMO they're more dangerous than modern "C" types.
stevelup:
Type B is almost universally used in the UK for residential applications - it's very rare to see type C used.

But bear in mind a UK ring final circuit is normally protected with a 32A breaker so even a type B breaker will tolerate the best part of 100A for many seconds!
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