What Is a Double Pole Switch?

A double pole switch cuts both the live and neutral connections to an appliance when switched off, fully isolating it — unlike a standard single pole switch, which only cuts the live. They're most commonly used to isolate fixed appliances below a kitchen worktop, such as washing machines, dishwashers, fridges, and ovens.

What's the difference between single pole and double pole?

A single pole switch — the kind used for a standard light switch — only breaks the live connection when switched off. The neutral wire stays connected at all times. A double pole switch breaks both the live and neutral connections simultaneously, fully isolating whatever it's connected to. This matters for appliances that need to be completely disconnected for maintenance, repair, or safety — rather than just switched off in normal use.

Which appliances need a double pole switch?

Double pole switches are typically fitted for fixed, below-worktop appliances that may need to be fully isolated:

Washing machines
Tumble dryers
Dishwashers
Fridges and freezers
Ovens

These are usually specified as 20-amp double pole (20A DP) switches, and are typically mounted above the worktop, close to the appliance, so they're easily accessible without having to move the appliance itself.

Why does full isolation matter?

For appliances that are plumbed in or hardwired, being able to fully disconnect both live and neutral is important both for electrical safety during any maintenance work, and because some appliances need a complete power cut to reset properly, rather than a standard switch-off. A single pole switch that leaves the neutral connected doesn't provide this.

Are double pole switches labelled for specific appliances?

Yes — most double pole switches are available engraved with the appliance name (for example, "Dishwasher" or "Washing Machine"), which makes it straightforward to identify which switch controls which appliance, particularly in a utility room or kitchen with several fitted in a row.

Frequently Asked Questions

What is a double pole switch?

A double pole switch cuts both the live and neutral connections to an appliance when switched off, fully isolating it. This differs from a single pole switch, which only cuts the live connection.

Do I need a double pole switch for a washing machine?

Yes. Washing machines, along with other fixed below-worktop appliances such as dishwashers, tumble dryers, fridges, freezers, and ovens, are typically isolated using a 20-amp double pole switch.

What's the difference between single pole and double pole switches?

A single pole switch only breaks the live connection when switched off, leaving the neutral wire connected. A double pole switch breaks both live and neutral simultaneously, fully isolating the appliance.

Can I get a double pole switch engraved for a specific appliance?

Yes. Most double pole switches are available engraved with the appliance name, such as "Dishwasher" or "Fridge Freezer," making them easy to identify when several are fitted together.

Our Double Pole Switches

We have one of the most comprehensive range of Double Pole (DP) switches available on the market in the UK. These switches come in every possible finish, from modern and contemporary switch plates, to traditional finishes, like polished brass and antique brass.

Browse a few of our available DP switches below.

Full Range of Sockets and Switches

In addition to our comprehensive range of DP switches, we also have a full selection of complete sockets and switches ranges available to buy. All the DP switches available are part of a larger range of sockets, switches, dimmers, toggles and other electrical accessories. Please check out the full range of sockets and switches here, or browse by finish below.