This translation was generated by a machine and has not been reviewed by a person yet. Speak this language? Review it.
ASS RCD does not trip
Gottfried Silberhorn and 3 other contributors
Last updated on Sep 2, 2026
Views: 476
View statistics:
- Past 24 Hours:
- 3
- Past 7 Days:
- 13
- Past 30 Days:
- 71
- All Time:
- 476
Comments: 0
No one has left comments on this guide. Will you be first?
Go to guide commentsCompleted: 0 1
No one has marked this guide "completed." Will you be the first?
1 person has marked this guide "completed." It's you — great job!
Favorites: 0 1
No one has favorited (and subscribed to) this guide. Will you be the first?
1 person has favorited (and subscribed to) this guide — and that's you!
Featured Guide
This guide has been found to be exceptionally cool by the iFixit staff.
Community-Contributed Guide
An awesome member of our community made this guide. It was not created by iFixit staff.
Introduction
Go to step 1 ↓If you touch a live part and get an electric shock, the residual current device (RCD) detects it and switches off in a flash.
Having such a safety switch on your cable makes you feel safe (and rightly so), whether you're working on electronics or trimming your hedge.
It's just a problem if the protection fails at the critical moment......
What you need
Tools
-
-
-
the circuit breaker works with the IC RV4145, which requires 26V, but there are 230V on the line, the excess is 'burned off' in a large resistor
-
directly next to the resistor sits (stands) a small electrolytic capacitor, a design flaw, because electrolytic capacitors do not like heat ..... after a few years they are defective
-
and the dangerous thing here is, you don't notice anything ..... current still flows .......
-
Only by pressing the 'Test' button do you notice the defect!
Ask FixBot
-
-
-
Desolder the defective electrolytic capacitor.
-
To make the new electrolytic capacitor last longer, install it on the underside... it is not as hot there.
-
Observe the polarity, see the photo for +.
-
When testing without switching off, the small test resistance can burn out and must then also be replaced; 6.8 kΩ for 30mA RCD (18 kΩ in the photo).
-
-
-
-
so, attention, such an RCD is not 'fail-safe'
-
therefore regularly press the 'Test' button !
-
-
Follow these steps in reverse order to reassemble your device.
