This is a plug you attach to the power lead in place of the supplied  3 pin plug.

Contains a 240v 13 Amp RCD which cuts the electrical supply to your appliance in case of an electrical fault

Non-latching, if the power supply is interrupted the RCD will trip and need to be reset when the power is turned on again.

Maximum load 3120 watts (3.12kW)

Dimensions: Height 20.5 cm, width 5.3cm, Length 12.9cm.

An RCD is designed to protect against the risks of electrocution and fire caused by earth faults.  For example, if a faulty appliance overheats causing the electric current to flow to earth. It does not offer complete protection and in certain circumstances may only operate after a fire has already started in your appliance.

You should test all fixed and socket RCDs about every three months. Manufacturers recommend that portable RCDs are tested every time you use them.