The electrician uses these safety fuse pliers to install and remove fuse cartridges. Depending on the type of cartridge - eg cylindrical cartridge, glass fuse CEHESS, etc. - and thus also on the number of volts, a different model of pliers is used.
The tool consists of a plastic, formerly Bakelite, pliers (approx. 20 cm) with rounded jaws. Sometimes a rubber sleeve is included for handling glass fuses.
For the cartridges of heavy fuses (up to 12000 V) formerly used in small processing plants (of eg lighting fixtures) a long (approx. 115 cm) (1) wooden tongs with porcelain insulators on the arms were used. The pliers may or may not be provided with a grounding in the form of a cable.
See also the key for safety fuse type DIAZED. [MOT]
(1) E & E: 353; mentions that these pliers come in two sizes and also shows another model.