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Replacement breaker help.
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housebuyer143
Posts: 4,233 Forumite

I am trying to buy a replacement breaker. Without unscrewing the current fuse box and taking out the current one, I wanted to know if anyone can advise if this is a match?
The only difference I see is a 2 in the bottom corner, rather than a 1 in the top? Not sure what that means.
I need a 20amp breaker.
The only difference I see is a 2 in the bottom corner, rather than a 1 in the top? Not sure what that means.
I need a 20amp breaker.


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Comments
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Why are you wanting to swap a MCB? They are one of the safest forms of protection from electric shocks, and dont usually fail.0
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Searches might not be working by using the term "fuse". those are breakers or MCBs.
You need a 6amp MCB, the one pictured is 20amp. Otherwise it looks like the right type.1 -
TadleyBaggie said:Searches might not be working by using the term "fuse". those are breakers or MCBs.
You need a 6amp MCB, the one pictured is 20amp. Otherwise it looks like the right type.0 -
they are the same MCB. the part numbers match, both are ALB XX 1 (where XX is the amperage)1
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TadleyBaggie said:Searches might not be working by using the term "fuse". those are breakers or MCBs.
You need a 6amp MCB, the one pictured is 20amp. Otherwise it looks like the right type.Signature on holiday for two weeks0 -
FFHillbilly said:they are the same MCB. the part numbers match, both are ALB XX 1 (where XX is the amperage)And "1" is the number of poles.I'm not a huge fan of second-hand circuit protective devices if I'm honest.0
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You can't just assume you can change a 6A MCB for a 20A, the wiring and fittings may not be rated for 20A. MEM circuit breakers are readily available from many places.Living the dream in the Austrian Alps.1
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H143, are you trying to up-rate the MCB, or swap a 20 for a 20? If the former, can we ask why? Are you sure it's a good idea?
The one shown should be a direct replacement. I understand the 'B' before the rating number indicates a 'type' - how fast it responds, like the slow & fast-blow fuses you can get. Not sure which way.0 -
ThisIsWeird said:H143, are you trying to up-rate the MCB, or swap a 20 for a 20? If the former, can we ask why? Are you sure it's a good idea?
The one shown should be a direct replacement. I understand the 'B' before the rating number indicates a 'type' - how fast it responds, like the slow & fast-blow fuses you can get. Not sure which way.The "B" is the speed rating. You won't see "A" breakers, so "B" is the fastest. Slower ones are "C" or "D".In this country, we usually use "B" ones unless there's a good reason to use a slower one.
If it sticks, force it.
If it breaks, well it wasn't working right anyway.2 -
Is the a double pole switch from the meter or will you be doing it Live or pulling the main fuse?
Good luck!0
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