The essential test tools and equipment needed to implement a safe isolation procedure in accordance with Electricity at Work regulations are a dedicated voltage indicator, a proving unit to verify the voltage indicator, a locking off device which can be secured in place using a padlock with unique key and a clear method of labelling the hazard. The Martindale LOK devices have been designed to fit a wide range of MCBs, RCBOs, fuse carriers and main switches and are compatible with Martindale PAD10 and PAD20 Series padlocks and TAG sets. The LOK series are available with different openings and include pushpin and grub screw designs in a range of different sizes to match most breaker configurations and applications even access is restricted. The MARLOK3 dimensions are 48mm x 14mm. It has a 13 mm opening (max 15mm) which is 15mm deep. A ‘DO NOT REMOVE LOCKED OUT’ label is attached to the device so that it is easily visible when in use. To cover every eventuality, the complete range of Martindale safe isolation lock out devices and accessories are available in the Martindale LOKKITPRO which includes a soft carry case.

• · For use with MCBs on domestic and industrial distribution boards for isolation purposes. The LOK3 has a 13mm opening.