circuit breaker

[david9121]

Anyone know where I can purchase the internal 240v circuit breaker (with the test button)?
thanks

[kevtherev]

from any hardware outlet like B & Q
from any electrical wholesaler

[1664]

Unless you have a westy it'll be a standard size; double pole and DIN rail mounted. Different units may vary slightly though so it would be best if you removed it and took it to an electrical wholesaler such as Newey & Eyre, Edmundsons, City Electrical Factors etc to make sure the replacement fits the box.

[kevtherev]

Would something like this be suitable Bren?

http://www.screwfix.com/p/mk-sentry-4-w ... unit/33248" onclick="window.open(this.href);return false;

[1664]

Would something like this be suitable Bren?

http://www.screwfix.com/p/mk-sentry-4-w ... unit/33248" onclick="window.open(this.href);return false;

That's a complete unit Kev and they're only after the RCD incoming switch.

Technically speaking the unit you've linked to would have been ok under previous electrical regulations but the current regulations (caravan and motorhomes section) require circuit breakers to be double pole as well as the incoming switch. As well as that the linked one says 2+2 ways and the illustration is of a 2 way - it also says "2 unprotected ways" and I can only assume they mean unproteced by the RCD so that would make it unsuitable too. Might just be they've screwed up the description.

[david9121]

Is the rating 10 amp (10mA) 30ms?

[1664]

Is the rating 10 amp (10mA) 30ms?

It should say on it. Can you pop a picure of it up? You have a consumer unit where this is the main switch and there's a couple of smaller circuit breakers adjacent to it yes?

If so, 40A 30mA is the most common I've seen. It does NOT mean it will trip at above 40A; it's an earth leakage breaker which will trip if any current leaks to earth through a fault (or a person) of about 30mA and above. The other circuit breakers in the camper consumer unit and the actual hook up breaker are what limit the actual current flow - 16A usually.

[billybigspud]

wylex is probably the cheapest. bought a 40a 30 ma rcd today and cost me £20 ish. that was with my discount as i am a sparky. i wouldnt really worry about the amps as all your circuits will be backed with mcb's anyway but try and go for a 40. i think they do a 32 as well. 30ma is the important bit