Arc Fault Detection Device without rcd

Newfutile 6 months ago

one of our contractors has installed several Hagar ARM932U Arc Fault Detection Device.

After many enquires Hagar Technical confirm its only a MCB with AFDD.

The contractors insist its an rcbo as well , i put 550mA on an (RCD) Residual Current Device test it did not trip.

this had made me wonder if others have come across such devices and where they are designed to be installed to?

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0 Chris Pearson 6 months ago

From the horse's mouth:

https://hager.com/uk/products/h/arm932u-mcb-with-arc-detect-1m-32a-b-6ka

https://hager.com/uk/products/h/arr932u-rcbo-with-arc-detect-1m-32a-b-6ka-a-30ma
0 Newfutile 6 months ago in reply to Chris Pearson

Both of those links bring up the same thing, we have now asked the contractor to install the ARR versions.

i do wonder how many of these have been fitted thinking they have an (RCD) rcbo element,though of course proper testing would find this.
0 AJJewsbury 6 months ago in reply to Newfutile

Both of those links bring up the same thing,

Same for me - try this: hager.com/.../arr932u-rcbo-with-arc-detect-1m-32a-b-6ka-a-30ma

- Andy.
0 Chris Pearson 6 months ago in reply to Newfutile

My apologies! This demonstrates the perils of cut and paste. I have amended the link in my earlier posting.

I entirely agree with your further point.

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0 Chris Pearson 6 months ago in reply to Newfutile

My apologies! This demonstrates the perils of cut and paste. I have amended the link in my earlier posting.

I entirely agree with your further point.

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