Double pole RCBO takes only one spot

Michaelp · Jul 30, 2017

What do you think about these kind of rcbo ? Do you use them ? Should be nice for a situation when there is no extra space in the D/B

[ElectriciansForums.net] Double pole RCBO takes only one spot

Leesparkykent · Jul 30, 2017

Sbs compact RCBO's are SPSN.

westward10 · Jul 30, 2017

Delete.

Leesparkykent · Jul 30, 2017

westward10 said:
Delete.

looks Single pole switched neutral to me.

Toneyz · Jul 30, 2017

Unfortunately I can't see how this will fit in a distribution board the D.P. RCBO's I've come across have covered a additional way.

Richard Burns · Jul 30, 2017

Michaelp said:
What do you think about these kind of rcbo ? Do you use them ? Should be nice for a situation when there is no extra space in the D/B

DP or SPSN RCBOs are a very good idea and are very useful in many circumstances.
The one you picture has the incomers at the top and outgoing at the bottom so would be very hard to install in a standard UK CU, generally to add a DP RCBO to a single busbar CU would not be possible as the busbar would obstruct access to the neutral terminal.
A specifically designed CU for those RCBOs would be great and would avoid nuisance tripping of different circuits and could still provide DP isolation for each circuit.
I notice they are advertised as single pole despite having a switched neutral on the diagram.

snowhead · Jul 30, 2017

From Schnap website;

Double pole, clearly takes up 2 ways;
LANX RCD/ MCB Double/ Two Pole Safety Switch 16A - http://www.schnap.com.au/circuit-protection/electronic-two-pole-rcbos/lanx-rcd-mcb-safety-switch-16a.html

Single pole as per O.P only takes 1 way, includes a warning re not reversing connections, presumably as the neutral isn't switched (second picture);

LANX Single Pole Safety Switch 16A 30ma 4.5KA RCD MCB - http://www.schnap.com.au/circuit-protection/rcbo/lanx-single-pole-safety-switch-16a-30ma-4.5ka-rcd-mcb.html

Leesparkykent · Jul 30, 2017

Like this.

Leesparkykent · Jul 30, 2017

......

Leesparkykent · Jul 30, 2017

snowhead said:
From Schnap website;

Double pole, clearly takes up 2 ways;
LANX RCD/ MCB Double/ Two Pole Safety Switch 16A - http://www.schnap.com.au/circuit-protection/electronic-two-pole-rcbos/lanx-rcd-mcb-safety-switch-16a.html

Single pole as per O.P only takes 1 way, includes a warning re not reversing connections, presumably as the neutral isn't switched (second picture);

LANX Single Pole Safety Switch 16A 30ma 4.5KA RCD MCB - http://www.schnap.com.au/circuit-protection/rcbo/lanx-single-pole-safety-switch-16a-30ma-4.5ka-rcd-mcb.html

Double pole will have overcurrent protection in both poles. Single pole switched neutral will obviously only provide overcurrent protection to the line side.

Toneyz · Jul 30, 2017

Ok these only take up 1 way but are they D.P. switched and you would have to have a consumer unit as they do in Europe I think that has these neutral bus-bars as photo to take D.P. mcb's same size as our standard s.p m.c.b.'s.

davesparks · Jul 31, 2017

anthonybragg said:
Ok these only take up 1 way but are they D.P. switched and you would have to have a consumer unit as they do in Europe I think that has these neutral bus-bars as photo to take D.P. mcb's same size as our standard s.p m.c.b.'s.

They exist in this country too, SBS trade sales have a range of these for CUs

Richard Burns · Jul 31, 2017

If only they could make the neutral switched on the standard type of RCBOs with a neutral tail then this would solve a lot of inconvenience and fit in standard CUs.

Midwest · Jul 31, 2017

An advert in July/August PE by Aoelec (made in China), demonstrates their 'new mini single pole' RCBO (KBO). They also have 'both live & neutral switched RCBO ready soon'.

They appear to have CE, CB, RoHS marks, but nothing Googl'ible in the UK.