The Socket & See LOD10 is an easy to use the universal design fits most known makes of miniature circuit breakers without the need for keys.
Electrical safety code of practice 2013
Managing electrical risks in the workplace
6.1 Securing the isolation
For work on low voltage electrical equipment or circuits, ensure that the correct point of isolation is identified, an appropriate means of isolation is used and the supply cannot be inadvertently re-energised while the work is carried out.
Part No. LOD10