Best RCD UK
Updated: October 2026
You want one residual current device, and you want it to match a mower, a lead or a board rather than the highest star line. The best RCD UK in this amazon.co.uk set is a different listing for each job. Three are plug-in adaptors, two are units you wire, and one is a DIN-rail breaker. This page says who each listing is for and who should leave it. It does not teach the test sequence. Prices are on the [RCD comparison](/hub/electrical-equipment/rcd). There is no lab ranking.
You want one residual current device, and you want it to match a mower, a lead or a board rather than the highest star line. The best RCD UK in this amazon.co.uk set is a different listing for each job.
You want one residual current device, and you want it to match a mower, a lead or a board rather than the highest star line. The best RCD UK in this amazon.co.uk set is a different listing for each job. Three are plug-in adaptors, two are units you wire, and one is a DIN-rail breaker. This page says who each listing is for and who should leave it. It does not teach the test sequence. Prices are on the RCD comparison. There is no lab ranking.
Our top picks
| Badge | Product | Form | Trip current | Latching | Note | Price | Offer |
|---|---|---|---|---|---|---|---|
| Best overall |  Schneider Schneider Easy9 EZ9R46291 | DIN-rail RCCB | 30 mA | Not stated | 9.8 | about £48.67 | View offer |
 EXNICEXI EXNICEXI NB-H3E-13 | Plug-in adaptor | 30 mA | Manual reset after a trip | 9.2 | about £13.99 | View offer | |
| Best value |  Masterplug Masterplug ARCDKG-ZD | Plug-in adaptor | Not stated | Non-latching | 8.8 | about £9.94 | View offer |
On this page
A mower or trimmer in the hand
For a corded mower or trimmer you want a 13 A device on a tool that must not restart when the power returns. The plug-in that states 30 mA on amazon.co.uk is the EXNICEXI NB-H3E-13. It cites IEC 61540, and the bullets say the supply is cut within 0.1 seconds at 30 mA or above. A review reports melted plug pins after about six weeks. Stop using a unit that does that. The listing does not say non-latching. It only says you reset after a trip.
The Masterplug ARCDKG-ZD is the other plug people buy for this job. The listing says non-latching and cites BS 7071 1992. It does not state milliamps. If you need 30 mA printed on Amazon, skip the ARCDKG-ZD. Lawn conditions are on RCD for garden tools.
A lead under a socket lid
A plug-in often will not fit under an outdoor socket lid. That is when you wire a unit into the lead. The listing that prints the figures is the Masterplug ILRCDNG-MP. It states 30 mA, a typical 40 ms trip, 3120 W, double pole, IP65 and BS 7071:1992, and it is non-latching. If you cannot tell live, neutral and earth apart, do not open the flex.
The PRCDKB reads like one socket, while reviews describe wiring it onto a flex. Choose the ILRCDNG-MP when you want 30 mA and IP65 on the amazon page. The button check is on how to test an RCD.
A breaker in the consumer unit
The Schneider Easy9 EZ9R46291 is the only device here for a board. It is a two-pole Type A RCCB, 100 A, 30 mA, 230 V, instantaneous. The 100 A is the carry rating. The 30 mA is the sensitivity. IP20 becomes IP40 inside an enclosure. It has no overcurrent protection, so it still needs a fuse or MCB.
In England a new circuit or a replacement consumer unit is notifiable unless a competent-person scheme certifies the work. If the job is a mower, leave the Easy9.
Who should skip each listing
Skip the EXNICEXI if you need the word non-latching, an IP rating, or a body that fits under a lid. The melted-pin review is a stop-using sign, not proof that the 30 mA line is missing. Skip the ARCDKG-ZD if you will only buy a page that prints milliamps, if the load is a pond or a freezer, or if you are feeding an EV charger. The long review file is the best value here on price and sample size, with that limit. Skip the ILRCDNG-MP if you will not wire a flex, or if the load must restart after a power cut.
Common questions
Does the cheapest Masterplug state 30 mA on Amazon?
No. The ARCDKG-ZD cites BS 7071 1992, 13 A and non-latching behaviour. It does not print a residual current. The data sheet states 30 mA and a typical 40 ms. If you need the number on the listing, the EXNICEXI and the ILRCDNG-MP are the portable pages that state it. The Schneider states it on a DIN-rail RCCB, which is a different job.
What is wrong with the orange Status adaptor as a best pick?
Little is stated. The SRCDORX3 is a 13 A plug with test and reset, about £12.95 and 4.6 from 449 reviews. The capture does not give milliamps, a standard, or latching behaviour. Reviews mention a small lamp. Surge protection is not in the bullets. A mower pick needs a restart rule or a stated 30 mA figure. This listing has neither.
Is PRCDKB the same product as the single-socket adaptor?
No. The ARCDKG-ZD is the single-socket plug-in. The PRCDKB is about £12.48 and reads like a socket, while reviews and the Luceco sheet describe a rewireable safety plug. Both cite BS 7071 1992 and non-latching. Only the socket adaptor pushes in without tools. Order the PRCDKB only if you mean to wire it.
Why is the Schneider so much more, and who should skip it?
About £48.67 buys a two-pole Type A RCCB rated 100 A and 30 mA, not a better £9.94 plug. Skip it for a garden tool, for a push-in job, and if you are not arranging a competent person. The 4.9 from 22 reviews is too small to rank against the Masterplug plug-in. IP20, or IP40 in an enclosure, is not an outdoor-lead rating.
Which model should I skip for a pond or a freezer?
Skip the three that state non-latching: the ARCDKG-ZD, the ILRCDNG-MP and the PRCDKB. They stay off after a supply failure until a person resets them. A pond pump, fridge or freezer needs power back after a normal cut. An earth fault still needs a person. The Status and the EXNICEXI do not state latching, so a missing word is not a fallback. The Schneider does not state it either.
Related pages
Sources
Public UK sources are listed below. Shelf prices and star lines are the amazon.co.uk figures checked on 19 October 2026.
- HSE: work using electrically powered equipment (retrieved 19 October 2026)
- HSE: electrical systems on construction sites (retrieved 19 October 2026)
- IET Wiring Matters: 30 mA socket-outlet mythbuster (retrieved 19 October 2026)
- IET Wiring Matters: RCD testing under Amendment 2 (retrieved 19 October 2026)
- IET Wiring Matters: which RCD type (retrieved 19 October 2026)
- Electrical Safety First: garden (retrieved 19 October 2026)
- GOV.UK: building work, replacements and repairs (retrieved 19 October 2026)
- BEAMA guide to the selection and application of RCDs (August 2022) (retrieved 19 October 2026)