The innovative and comprehensive range of Mersen fuse-holders. CCR fuse-holders are finger-safe under IEC standards to an IP20 grade of protection, including fuse changing (with the flick of a finger). CCR fuse-holders are available in 1, 2, 3 poles, in IEC version in a very special compact design. Multi-pole units can also be field assembled by ordering pin-ties assembly kit. CCR range is made of tough and durable thermoplastic material.