Hager L51 Fuse Holders Hager comprehensive range of DIN rail mount fuse-holders. All of the fuse-holders offer finger-safe to IEC standards at IP20 protection , they also offer easy fuse changing. Suitable applications include protection for motors, transformers, low voltage distribution, control circuits and drive protection. Features and Benefits For type gG and aM, 14 x 51 mm fuses DIN rail mounting Various pole options available Max. 50 A - 690 V