Abstract: A protection device for an electrical apparatus to realize a degree of protection includes: a front part, which has a cutout, through which a partially insulated cable or bar is insertable; and a rear part, from which the non-insulated part of the cable or bar is extendable into an interior of the electrical apparatus. A channel passes through the front part and the rear part. A stop is arranged within the channel, on which the insulation jacket of the insulated part of a cable or bar may abut.