Updated on 15/07/24 by Emmanuelle_OVO:

What's an isolation switch?

An isolation switch (also known as a 'double-pole isolator') is a piece of equipment which can be installed on a metering supply that will allow the supply to be de-energised post-meter. The isolation switch should be fitted after the meter but before the consumer unit.

What's the purpose of an isolation switch?

An isolation switch is designed to act as a circuit breaker on the mains electrical supply, so that any electrical work that needs to take place within a property can be completed safely by a private electrician. It also negates the need for a supplier to send an engineer to the property to de-energise the cut out (and re-energise afterwards) so that any internal electrical work can take place.

What does an isolation switch look like?

The isolation switch is located on the right of this photo. When the switch is turned off,  there would be no power after the isolation switch, which in turn would allow a private electrician to complete any maintenance work or repairs on the member's internal electrical set up.

Who's responsible for installing an isolation switch?

An isolation switch needs to be installed by your supplier. This is because the supply would need to be de-energised via the cut out and private electricians are not permitted to work on the cut out. Therefore, the supplier would need to arrange for an engineer to go to the property to install one. 

For more information and job prices see this helpful tutorial:

How can I arrange an isolation switch install alongside a Smart meter installation?

Reach out to our Support Team, as an isolation switch is not a standard part of the smart meter installation this needs to be made clear before you arrange an appointment. If you already have a smart meter installed we can schedule in an isolation switch installation as a non-essential maintenance job. There is a charge for this, check this guide to see the current cost.