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Electrical Safety Switches

This web page describes electrical safety switches:

  • What electrical safety switches are.
  • Descriptions of different types of electrical safety switches.

What Are Electrical Safety Switches?

An electrical safety switch is a switch that removes or diverts the flow of electricity for the sake of safety.

An RCD is an electrical safety switch; an RCD stops the flow of current when the current on the live line is greater, by a set amount (the amount varies), than on the neutral line.

A lightning rod is an electrical safety switch – a lightning rod diverts the flow of electricity (the lightning bolt) down a safe path to earth.


Different Types Of Electrical Safety Switches


An RCD is a switch that stops the flow of electricity. An RCD stops the flow of electricity when the flow of electricity in the live line is greater, by a set amount, than the flow of electricity in the neutral line.

You cannot destroy energy. What flows into an electrical circuit must flow out; if flow out does not equal flow in the flow is going ‘somewhere else’.

If the flow of electricity is ‘somewhere else’, something is wrong – stop the flow of electricity.


A fuse is an electrical safety switch, a fuse removes the flow of electricity when the electrical flow through the fuse is greater than the fuse rating.

Lightning Rod

A lightning rod diverts electrical current from a path that may cause a fire to a safe path to earth.

Lightning is electrical energy, diverting lightning through a lightning rod is a safety action.

On\Off Switch

A standard on\off switch is an electrical safety switch. People turn electrical appliances off for different reasons; for instance save money, lessen the risk of fire and when some is working on the appliance.

Turning an electrical appliance off when someone is working on it is a safety action.

There are different variations of an on\off switch, for instance emergency off switches and ‘dead man’s handles’.


Judge Electrical Limited
15 Mulberry Court, Huntington, York, YO32 9TU
Telephone 01904 764845 (Landline), 07919 033113 Mobile)
Email info@judgeelectrical.co.uk
VAT No. 852917405. Company Number 6359328