Mersen Modulostar CMS10 Fuse Holder for 10.3 x 38.1 fuse-links, without indicator. Modular fuse-holder is finger-safe under IEC standards to an IP20 grade of protection, including fuse changing (with the flick of a finger). Multi-pole units can also be field assembled by ordering pin-ties assembly kit. Modulostar® range is made of tough and durable thermoplastic or thermoset material.