20 amp Double Pole switches also known as Immersion Switches or Double Pole Isolator Switches. They are available in various types some with Neon indicator lights and others with cord outlet holes in the front. 20 amp Double Pole Switches are generally used with Electrical appliances that need to be hard-wired as opposed to using a Plug and Socket. They are usually protected by a fuse or circuit breaker in a consumer unit or fuse board. Typical examples could be Washing Machines, Tumble Driers, Dishwashers or Large Storage Heaters and Water Heaters etc the terminology Double Pole (DP) means that the switch breaks both the Live and the Neutral poles – this is widely regarded as the safest way to isolate an electrical load.
These switches are often used instead of a Switched Fused Spur when the load is likely to be greater than 13 amps or the appliance has a surge at start up. In these circumstances fused protection should be offered at the consumer unit.
You can choose to have a neon indicator light that will show you when the appliance is live and we also offer the same units with a cord outlet to allow the appliance flex through the front of the 20 amp Double Pole Switch. This is useful when wiring heating products or similar.
Our 20 amp double pole switches have an earth terminal as well as 2 live and neutral terminals and these terminals will accept up to 3 x 2.5mm Twin & Earth Cables or 2 x 4.0mm Twin & Earth Cables.
We recommend 25mm deep wall boxes for mounting our 20 amp double pole switches or 35mm deep wall boxes for shallow or flat plate ranges.
If you require any advice or assistance please call our sales team on 01926 289289.