Updated Guidance on Testing Hager Type ‘A’ RCCB’s (What to do if they Fail 5x 30mA (150mA) Test.

Very useful

Hi, Danish electrician here. I just fitted two Hager RCBO’s on Friday and they both failed in the 5x test… one above 40mS on 0 degrees and the other on 180 degrees. This video is REALLY helpful. I use a Metrel Eurotest so I have to figure out how to change the parameters. Thank you again from your neighbor to the east. 🙂

Could it be fair to say most type A rcd are like this? I've noticed this with proteus type A rcd are just the same. Reading always being on the high side.

Tanks for all this helpful information

Please explain in Hindi language

Great video, thanks

Thanks guy's, i have been rattling my brains and wondering why i have been getting high readings! Hagar... sort your sh1t out!, its marked as a 30mA!

I can't explain how helpful you guys r to me. Thank u so much for your help and thorough explanation. Keep it up and I hope all the success for u

Great video gents. Very helpful and clearly explained. Thank you

Very interesting. I’ve been using Kewtech and I’ve had the same issues. However recently started using fluke 1664 and reading on hager rcd/rcbo’s much lower. On fluke I test separately type AC and type A

Question, what if my tester is old and doesn't have a variable setting, so only 10ma, 30ma, 100ma or 300ma...the closest thing I can put through these A types will be 100ma or a new tester :(

I got 2 Hagar's that failed conventional 5x tests but my tester can't do 250ma

good to know, Thanks

Interesting video. A question re the Megger MFT used: If you change the test current to 50mA for the x5 test.... Do you have to change it back to 30mA afterwards so that next time you do a x1 it won't do it at 50mA? Or..... is the 50mA only stored for x5 type A?

So, if your 30mA RCD fails at X5, get your Sharpie out and write over the 30mA printed on the front of the RCD, 50mA. Easy? Right?

As it says in the regs, it's all down to your engineering judgment, and no liability rest with them.

You've just spared anyone watching this endless scratching of their heads. Cheers lads.

How do I set my Metrel 3152xc to 250mA please?

very good pick up a lot for from this is there any chance you could do some thing on erroneous connections and testing thank you

I have exactly the same tester as the one in the video, it has been recently calibrated but when testing these Hager type A RCD's. It trips the RCD when switched to VAR at x5 50mA but just says "TRP" on my screen and not an actual figure in milli seconds. Could my tester be faulty?

Hi Gaz, long time no see. I was wondering if you had come across the new Hagar boards tripping the RCD on a no-trip ZS test using the Fluke 1654B mft? Had this quite a few times now.

HI Guy's can you give me a quick break down of the RCD test for 61009 ADC and ADA RCBO's

Great video! Thank you very much!

I understand why Hager didn't want to do a recall but "if it doesn't pass at 5x just try 8x" doesn't inspire confidence. Hager operate in a market, and that market has established and codified practices.

Question for anyone please. Recently been working on a new build site where they have installed this type of Hager RCCB. On both RCCBs I'm getting tripping an half current at 1500ms. Recently calibrated machine etc. Also worked on a house on the same estate with exact same install and theirs isn't tripping. The property has been re tested by the electrical contractor who works for the building company and they said it's "fine", whereas I'm saying the device is over sensitive. Are there any specific parameters for tripping at half current for these specific devicess? Thanks all

Edit: kewtech kt64 , testing on type A

1/2 times the 500mA would also give you 250mA.

BS7671 table 3A states for a 30mA RCD/RCBO @ 150mA the max time is 40mS, I cant see the statement "manufacturers can make up their own times" anywhere?

Went through this today on my annual NICEIC visit, wish I'd have seen this video 1st to get extra brownie points

Great video, thanks for the clarity 👍

When a RCBO trips, how can you tell if the trip was an overload or a leakage? At least when the rcd and mcb are separate, you know immediately what you are looking for.

where should we prefer to use RCCB over RCBO. isnt RCBO the best, since it also provide OL protection

Another great vid cheers

Totally just sorted out my head scratching as to why i'm getting higher trip times...well done guys..great vid..keep em coming and thankyou

cheers guys

What if your meter wont test to 250ma?

If you perform the same tests with the setting for AC you'll get much better results. The meters are creating different types of fault currents, depending on which type of test you perform. But it's good to always test the worst case scenario. If you have an AC fault the type A RCDs will react as fast as the old AC only RCDs.

Sounds like a fudge to get a pass to me. Come on Hager it’s a 30mA device not a 50mA.

Would be helpful if Hager actually had product literature for the Hager RCCB CD285U (100A 30mA type A RCD), and included this guidance. Apparently there is "no Data on the CD285U and they are not selling it as a spare part". This comment was from their tech support on the 12/4/19

Is it a good idea to put the stickers on the actual breakers. If they need to be changed - the stickers are going to either go with the defective breaker / try to be scraped off / or new circuit label be printed. Why no just put the labels below each breaker ?

Nice one Gaz and Marcus, really useful information. 👍

Great video as always 👍

I rarely see Hager and have never fitted them. The way those breakers line up with the front cover isn't selling it to me either. Having said that, having space for labels on the MCB's does look useful - my usual solution to keep track when the board cover is off is to write the circuit number on the upper front of the breaker, so it's behind the cover when it is fitted. My labelling of the front panel would always show the circuit number

Sounds like a bit of a cop out on Hager's part... If our RCD's don't operate within the prescribed times then keep testing at a greater residual current until it does.

Thanks guys for this information, as you say it will be useful as a back up test in the event you want extra reassurance from borderline results at 30mA (am I right I guessing they are using 50mA, as electrical shocks at 50mA or higher can be fatal - I might be wrong in thinking that is the reason for the figure they are using, just the 50mA sticks in my head from my EAL/LV2 book p36). Also great video in showing how to adapt the Megger for variations to the mA settings. Love the testing advice videos 👍

Another excellent & really informative video, thanks Gaz & Marcus.

I have no comprehension what they are on about

Genuinely informative guys 👍

Can almost imagine the Hager board room meeting discussing their new type A rcds not always meeting additional protection disconnection times and the one sneaky bastard finding that loop hole allowing 250mA to be the test trip current value. My tester for one cannot do a 250mA test and measure the trip time.

What comment did you put (if any) on your paperwork to indicate the test parameters for anyone coming to test in the future?

Bs7671 regulation 415.1 states that to comply with additional protection an rcd must be tested at 5xI delta n .
The rcd must be rated at 30mA and must trip within 40ms.
Therefore this is what's commonly known as fudging the test results.