The innovative and comprehensive Modulostar® range of Mersen fuse-holders. CUS101HEL series are specially designed for the protection of PV systems. Modular fuse-holders are finger-safe under IEC and UL standards to an IP20 grade of protection, including fuse changing (with the flick of a finger). Modular fuse-holders CUS101HEL are available in 1 pole, with or without visual blown fuse indicator. Modulostar® range is made of tough and durable thermoplastic material. They are especially recommended to be used in combination with Mersen fuse-links HP6M and HP10M.