Everything that matters, at a glance.
Pin layout, voltage, amperage, dimensions — the technical details for Type J in one tidy table.
Switzerland developed its own electrical standard to ensure high quality and safety. The Type J design is similar to Type C but adds a grounding pin offset from the main pins. This unique design is exclusive to Switzerland.
Type J sockets feature recessed design for safety. The grounding pin provides protection, and the socket construction prevents accidental contact with live parts. Swiss electrical standards are known for high quality.
Type J outlets accept Type C (Europlug) plugs for ungrounded devices. Only Type J plugs can take advantage of the grounding. The 10A rating is lower than Type F (16A).
4 countries use Type J.
Mostly across Switzerland and Liechtenstein. Click any country for the full guide — voltage, adapters, and travel essentials for that destination.
Routes to and from Type J countries.
Country-to-country adapter guides for the most common trips involving Type J destinations.
Other plug types worth a look.
Neighboring plug types — same region, related shapes, or shared voltage zone. Useful when your trip has multiple stops.
Adapters travelers actually pack for Type J.
Three picks tested against Type J outlets — universal options that also work in 150+ other countries.
45W Universal Travel Adapter, European Travel Plug Adapter with PD&QC Fast Charging(2 USB-A & 3 USB-C Ports) - Worldwide Travel Essentials, International Power Adapter for UK/US/AU
Compact universal adapter with 4 USB ports and 1 USB-C. Works in US, EU, UK, AU.
Universal Travel Adapter Kit – 2 USA sockets, USB-A, USBC, 1x PD 35W USB-C and USBC Cable, Surge Protected, Plugs for EU, UK, China, AU, Japan - for Laptop, Phone, Camera-ETL Tested
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Will my devices work? Run the check.
Type J runs at 220-240V, 50Hz. See exactly which of your devices plug in safely and which need a converter.
Every plug type, in one place. All 15.
Type A through Type O — what they look like, where they're used, which countries share them. The full reference our visitors come back to most.
Keep going. Explore further.
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Side-by-side database with shape, voltage, countries.
Why some chargers blow up and others don't — the dual-voltage rule.
The 30-second test that tells you which devices need which.
How the world ended up split between 110V and 240V.
Tested picks from universal kits to single-route adapters.
110V vs 230V and what it means for your devices.
What is the Type J plug?+
Type J is the Swiss standard plug with three round pins arranged in a line, with the grounding pin offset. It's unique to Switzerland and Liechtenstein, though Type C plugs also fit Swiss outlets.
Which countries use Type J?+
Type J is used in Switzerland, Liechtenstein and across Switzerland, Liechtenstein. See the full list below.
Is the Type J plug grounded?+
Yes. Type J has a dedicated grounding pin for safe operation with appliances that require an earth connection.
Do I need a voltage converter for Type J countries?+
Type J countries operate at 220-240V, 50Hz. Modern dual-voltage electronics (phones, laptops, cameras labelled "100-240V") work everywhere with just a plug adapter. Single-voltage appliances from a different voltage zone need a converter.
Can I use my iPhone or laptop charger with Type J?+
Yes. Apple chargers and most laptop power supplies are dual-voltage (100-240V), so they work in Type J countries with just a plug adapter — no converter needed.
Going somewhere that uses Type J? Pluggy packs the rest.
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