Need some older CU breakers

[Pete.]

I have this consumer unit with 2 slots labelled as 'spare' which I need to use but with lower rating so want to find a couple of MCB's to go in it. Here's the unit, appears to be lewden palazolli by searching the product code.

And I've found these MCB's for sale. Question is, will they fit the above CU?

Lewden G06-1B16 MCB SP B Curve 6kA 16A

<p>For over 200 years, Lewden have designed easily installed, durable and smart electrical power distribution solutions for industrial, commercial and domestic applications. Thanks to their association with Palazolli Group, Lewden have broadened their design scope with access to high quality...

www.tradesparky.com

 

[Martinb]

What MCBs do you need ? I have some of these, they were sold at Denmans
Control Gear was the brand i think.

 

[Pete.]

Thanks Martin I think I need a pair of 16A, I'll ask the sparky. He's running 2.5mm cable to feed a pair of air conditioning units 2.5kw and 3.5kw via isolator switches.

 

[Pete.]

Sparky says we need 1x16a and 1x 6a

 

[Martinb]

Got them, if you pm me an address i will post them monday

 

[Memmeddu]

It should have a din rail anyway, modern 1 module CB should fit no problem

 

[cheb]

It should have a din rail anyway, modern 1 module CB should fit no problem

Something I found when reusing breakers is that that they fitted the din rail but they didn't fit the consumer unit panel cutout.

 

[Seadog]

Also, the busbar position can be different. (I speak from experience).

 

[dobbslc]

Yes some do fit but a lot are just different enough not to site leve, or allow the bar to line up.

 

[Pete.]

Big thanks to @Martinb for sorting .e out with these

 

[brightspark]

chint breakers identical to lewden and fit. about 3 and a half quid each

 

[Pete.]

Turns out my RCD/mains switch is toast

 

[Onoff]

Time to bin and go all RCBO?

 

[Pete.]

Was an earth fault in the end. FP200 cable pinched in a clamp.

 

[Onoff]

Was an earth fault in the end. FP200 cable pinched in a clamp.

Was the upfront RCD continually tripping making you think it was faulty?

It can be tested by disconnecting the outgoing side and using a proper RCD tester (I have one).

Sounds like it was just doing it's job.

 

[Onoff]

Depending on whether there's a DIN rail in there you could possibly effect a cheap upgrade by changing the breakers to RCBOs.

Lewden RCBO-20/30/SPA RCBO 20A 30mA 6kA

RCBO 6A 30mA 6kA

www.electrical2go.co.uk

You would have course need to change the up front RCD to a straight DP switch.