Independent comparisons. We may earn from shop links. More info

Travel adapter buying guide: job, voltage and fuse

Updated: 23 October 2026

You searched for a plug adapter because the socket will not take the plug in your hand. amazon.co.uk mixed a travel brick, a cube, a shaver body and a USB charger into one list. This guide names the job first, then voltage, earth, fuse and load. USB watts come last. The [plug adapter comparison](/hub/sockets-and-extension-leads/plug-adapter) holds the eight listings we kept. It is the order of checks, not a ranking. Peter F. read the October 2026 amazon.co.uk listings and public UK safety pages. No lab test was run. A qualifying purchase can earn a commission at no extra cost to you.

You searched for a plug adapter because the socket will not take the plug in your hand. amazon.co.uk mixed a travel brick, a cube, a shaver body and a USB charger into one list.

Our top picks

TESSAN TESSAN universal travel adapter, 21 W USB

Best overall

TESSAN TESSAN universal travel adapter, 21 W USB
9.2/10about £19.99
View offer
Masterplug Masterplug shaver adaptor, 1 A

Alternative

Masterplug Masterplug shaver adaptor, 1 A
9.0/10about £2.29
View offer
BigFish BigFish universal travel adapter, 21 W USB

Best value

BigFish BigFish universal travel adapter, 21 W USB
9.0/10about £13.99
View offer
On this page
  1. 1.Four products share the name
  2. 2.The standard and the fuse
  3. 3.Earth, shutters and load
  4. 4.What USB and country-count do not change

Four products share the name

A travel adaptor changes pin shape. An inbound world-to-UK adaptor puts a visitor's plug into a Type G body. A cube splits one 13 A socket and never grows foreign pins. A shaver adaptor is a 1 A bathroom two-pin, not a hairdryer. They share a search term and they are not substitutes. UK mains are 230 V at 50 Hz, Type G under BS 1363. Match the current, not the country count. About £2–£8 covers the shaver, cube, inbound adaptor and switched three-way; about £14–£20 the 21 W universals; about £36–£45 the 70 W bricks. USB chargers were removed. If you already know the job, the best travel adapter page names who each row is for.

The standard and the fuse

BS 8546 covers travel adaptors with a UK plug or socket. It includes USB and excludes voltage conversion, BS 1363-3 adaptors and BS 1363-5 conversion plugs. A conversion plug is for an appliance that will stay in a British house. BS 1363-3 covers a cube and the Masterplug shaver body. An inbound adaptor should show a BS 1362 fuse. The Double Dragon world-to-UK listing claims BS 8546, then prints 10 A in the title and 13 A in a bullet. Two UK reviews say a European two-pin will not enter. OPSS alerts 2201-0320 and 2601-0166 are not a score for TESSAN or MOMAX. If a listing names no standard and no fuse, skip it.
TESSAN TESSAN universal travel adapter, 21 W USB

Testsieger

TESSAN TESSAN universal travel adapter, 21 W USB
9.2/10about £19.99
View offer

Earth, shutters and load

Class I kit, including many hairdryers, needs a metal earth. A two-pin sliver is for double-insulated Class II only. One review of the thin MOMAX UA36A says it cannot feed appliances that need an earth, and the specification table does not describe an earth path. Extra sockets do not add amps. Do not daisy-chain a cube into a travel brick. A scorched household socket is a job for a registered electrician. Europe is usually the same 230 V, so a typical French hotel needs pins, not a converter. Those pin families are on the UK to Europe plug adapter page. A 220–240 V-only plate will not run on US 120 V. That fork is the travel adapter vs voltage converter page.

What USB and country-count do not change

USB watts come after an honest fuse. The TESSAN and the BigFish share 21 W. The MOMAX bricks claim 70 W, at £35.99 and £44.99. That helps a laptop. It does not convert mains or raise the AC limit. The figures are listing text. Country counts are marketing. The TESSAN page excludes South Africa and India and names Types C, A, G and I. One UK review said it missed sockets in Poland. A 4.7 from 12 reviews is not the same evidence as a 4.6 from 3,075. The printed score is stars times 20. The badge is chosen separately.

Common questions

Is a plug adapter the same as a USB wall charger?
No. A plug adapter changes the shape of a mains plug or socket. A USB wall charger supplies low-voltage USB power and does not give you Type C, E, F or G pins for an appliance. Chargers that only offered USB were removed from this comparison. If your phone already uses a USB cable, you may not need a mains adaptor at all, though USB ports on a travel brick can still be convenient once the fuse and pin type are right.
Do I need BS 8546 or BS 1363-3?
Match the standard to the job. BS 8546 is the travel-adaptor specification for a UK interface, and it does not cover voltage conversion. BS 1363-3 covers UK-to-UK adaptors, including multiway cubes and the shaver body in this folder. BS 1363-5 is a fused conversion plug for a foreign appliance that will stay in a UK house. A fortnight in Spain is a travel adaptor, not a conversion plug.
Does a travel adapter convert voltage?
Not if it is a travel adaptor in the BS 8546 sense. BSI's scope for that standard excludes voltage conversion. Every universal in this folder is a pin changer for appliances already rated for the destination voltage. Europe is usually 230 V, the same as the UK. The United States at about 120 V is a different problem, and a 70 W USB stage does not solve it.
What fuse should I see on an inbound UK adaptor?
Look for a BS 1362 cartridge fuse, and read the amp mark on the body rather than a conflicting bullet. Cheap inbound listings often say 10 A or 13 A. The Double Dragon world-to-UK row prints both, so treat the rating as unsettled until you see the fuse. A shaver adaptor at 1 A is a different product and must not be used as the visitor's mains adaptor.
When is a 1 A shaver body the right buy?
Buy it when the appliance is a shaver, an electric toothbrush or a similar bathroom two-pin, and you need that plug in a normal BS 1363 socket. The Masterplug shaver row names BS 1363-3, a 1 A fuse and 240 W. It is the wrong buy for a hairdryer, a kettle or a holiday. The two-pin well follows the BS 4573 pattern, which is not a European Type C Europlug.

Related pages

Adapter plug with switch

Plug adapter

Best travel adapter in the UK: who each pick is for

How to use a travel adapter: plate, pins, then fuse

UK to Europe plug adapter: pins, earth, exceptions

Travel adapter vs voltage converter: read the plate

Sources

Sources taken from the research digest. Listings were scored in October 2026. This page did not run a lab test.

  1. Electrical Safety First, travel advice (retrieved 22.10.2026)
  2. Electrical Safety First, travel adaptors (retrieved 22.10.2026)
  3. Electrical Safety First, dangerous online adaptors (retrieved 22.10.2026)
  4. Plugs and Sockets etc. (Safety) Regulations 1994 (retrieved 22.10.2026)
  5. BSI, BS 8546 scope (retrieved 22.10.2026)
  6. BSI, BS 1363-5 scope (retrieved 22.10.2026)
  7. OPSS recall 2201-0320 (retrieved 22.10.2026)
  8. OPSS report 2601-0166 (January 2026) (retrieved 22.10.2026)